1250 lines
48 KiB
C++
1250 lines
48 KiB
C++
//-----------------------------------------------------------------------------
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// Given a constraint, draw a graphical and user-selectable representation
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// of that constraint on-screen. We can either draw with gl, or compute the
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// distance from a point (the location of the mouse pointer) to the lines
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// that we would have drawn, for selection.
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//
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// Copyright 2008-2013 Jonathan Westhues.
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//-----------------------------------------------------------------------------
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#include "solvespace.h"
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std::string Constraint::Label() const {
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std::string result;
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if(type == Type::ANGLE) {
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result = SS.DegreeToString(valA) + "°";
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} else if(type == Type::LENGTH_RATIO) {
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result = ssprintf("%.3f:1", valA);
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} else if(type == Type::COMMENT) {
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result = comment;
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} else if(type == Type::DIAMETER) {
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if(!other) {
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result = "⌀" + SS.MmToStringSI(valA);
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} else {
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result = "R" + SS.MmToStringSI(valA / 2);
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}
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} else {
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// valA has units of distance
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result = SS.MmToStringSI(fabs(valA));
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}
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if(reference) {
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result += " REF";
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}
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return result;
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}
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void Constraint::DoLine(Canvas *canvas, Canvas::hStroke hcs, Vector a, Vector b) {
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const Camera &camera = canvas->GetCamera();
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a = camera.AlignToPixelGrid(a);
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b = camera.AlignToPixelGrid(b);
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canvas->DrawLine(a, b, hcs);
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}
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void Constraint::DoStippledLine(Canvas *canvas, Canvas::hStroke hcs, Vector a, Vector b) {
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Canvas::Stroke strokeStippled = *canvas->strokes.FindById(hcs);
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strokeStippled.stipplePattern = StipplePattern::SHORT_DASH;
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strokeStippled.stippleScale = 4.0;
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Canvas::hStroke hcsStippled = canvas->GetStroke(strokeStippled);
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DoLine(canvas, hcsStippled, a, b);
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}
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void Constraint::DoLabel(Canvas *canvas, Canvas::hStroke hcs,
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Vector ref, Vector *labelPos, Vector gr, Vector gu) {
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const Camera &camera = canvas->GetCamera();
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std::string s = Label();
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double textHeight = Style::TextHeight(GetStyle()) / camera.scale;
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double swidth = VectorFont::Builtin()->GetWidth(textHeight, s),
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sheight = VectorFont::Builtin()->GetCapHeight(textHeight);
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// By default, the reference is from the center; but the style could
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// specify otherwise if one is present, and it could also specify a
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// rotation.
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if(type == Type::COMMENT && disp.style.v) {
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Style *st = Style::Get(disp.style);
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// rotation first
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double rads = st->textAngle*PI/180;
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double c = cos(rads), s = sin(rads);
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Vector pr = gr, pu = gu;
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gr = pr.ScaledBy( c).Plus(pu.ScaledBy(s));
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gu = pr.ScaledBy(-s).Plus(pu.ScaledBy(c));
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// then origin
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uint32_t o = (uint32_t)st->textOrigin;
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if(o & (uint32_t)Style::TextOrigin::LEFT) ref = ref.Plus(gr.WithMagnitude(swidth/2));
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if(o & (uint32_t)Style::TextOrigin::RIGHT) ref = ref.Minus(gr.WithMagnitude(swidth/2));
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if(o & (uint32_t)Style::TextOrigin::BOT) ref = ref.Plus(gu.WithMagnitude(sheight/2));
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if(o & (uint32_t)Style::TextOrigin::TOP) ref = ref.Minus(gu.WithMagnitude(sheight/2));
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}
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Vector o = ref.Minus(gr.WithMagnitude(swidth/2)).Minus(
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gu.WithMagnitude(sheight/2));
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canvas->DrawVectorText(s, textHeight, o, gr.WithMagnitude(1), gu.WithMagnitude(1), hcs);
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if(labelPos) *labelPos = o;
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}
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void Constraint::DoProjectedPoint(Canvas *canvas, Canvas::hStroke hcs,
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Vector *r, Vector n, Vector o) {
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double d = r->DistanceToPlane(n, o);
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Vector p = r->Minus(n.ScaledBy(d));
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DoStippledLine(canvas, hcs, p, *r);
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*r = p;
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}
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void Constraint::DoProjectedPoint(Canvas *canvas, Canvas::hStroke hcs, Vector *r) {
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Vector p = r->ProjectInto(workplane);
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DoStippledLine(canvas, hcs, p, *r);
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*r = p;
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}
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//-----------------------------------------------------------------------------
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// There is a rectangular box, aligned to our display axes (projRight, projUp)
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// centered at ref. This is where a dimension label will be drawn. We want to
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// draw a line from A to B. If that line would intersect the label box, then
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// trim the line to leave a gap for it, and return zero. If not, then extend
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// the line to almost meet the box, and return either positive or negative,
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// depending whether that extension was from A or from B.
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//-----------------------------------------------------------------------------
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int Constraint::DoLineTrimmedAgainstBox(Canvas *canvas, Canvas::hStroke hcs,
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Vector ref, Vector a, Vector b, bool extend) {
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const Camera &camera = canvas->GetCamera();
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double th = Style::TextHeight(GetStyle()) / camera.scale;
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double pixels = 1.0 / camera.scale;
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double swidth = VectorFont::Builtin()->GetWidth(th, Label()) + 8 * pixels,
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sheight = VectorFont::Builtin()->GetCapHeight(th) + 8 * pixels;
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Vector gu = camera.projUp.WithMagnitude(1),
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gr = camera.projRight.WithMagnitude(1);
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return DoLineTrimmedAgainstBox(canvas, hcs, ref, a, b, extend, gr, gu, swidth, sheight);
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}
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int Constraint::DoLineTrimmedAgainstBox(Canvas *canvas, Canvas::hStroke hcs,
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Vector ref, Vector a, Vector b, bool extend,
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Vector gr, Vector gu, double swidth, double sheight) {
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struct {
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Vector n;
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double d;
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} planes[4];
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// reference pos is the center of box occupied by text; build a rectangle
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// around that, aligned to axes gr and gu, from four planes will all four
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// normals pointing inward
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planes[0].n = gu.ScaledBy(-1); planes[0].d = -(gu.Dot(ref) + sheight/2);
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planes[1].n = gu; planes[1].d = gu.Dot(ref) - sheight/2;
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planes[2].n = gr; planes[2].d = gr.Dot(ref) - swidth/2;
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planes[3].n = gr.ScaledBy(-1); planes[3].d = -(gr.Dot(ref) + swidth/2);
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double tmin = VERY_POSITIVE, tmax = VERY_NEGATIVE;
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Vector dl = b.Minus(a);
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for(int i = 0; i < 4; i++) {
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bool parallel;
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Vector p = Vector::AtIntersectionOfPlaneAndLine(
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planes[i].n, planes[i].d,
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a, b, ¶llel);
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if(parallel) continue;
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int j;
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for(j = 0; j < 4; j++) {
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double d = (planes[j].n).Dot(p) - planes[j].d;
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if(d < -LENGTH_EPS) break;
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}
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if(j < 4) continue;
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double t = (p.Minus(a)).DivProjected(dl);
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tmin = min(t, tmin);
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tmax = max(t, tmax);
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}
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// Both in range; so there's pieces of the line on both sides of the label box.
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if(tmin >= 0.0 && tmin <= 1.0 && tmax >= 0.0 && tmax <= 1.0) {
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DoLine(canvas, hcs, a, a.Plus(dl.ScaledBy(tmin)));
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DoLine(canvas, hcs, a.Plus(dl.ScaledBy(tmax)), b);
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return 0;
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}
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// Only one intersection in range; so the box is right on top of the endpoint
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if(tmin >= 0.0 && tmin <= 1.0) {
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DoLine(canvas, hcs, a, a.Plus(dl.ScaledBy(tmin)));
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return 0;
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}
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// Likewise.
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if(tmax >= 0.0 && tmax <= 1.0) {
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DoLine(canvas, hcs, a.Plus(dl.ScaledBy(tmax)), b);
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return 0;
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}
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// The line does not intersect the label; so the line should get
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// extended to just barely meet the label.
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// 0 means the label lies within the line, negative means it's outside
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// and closer to b, positive means outside and closer to a.
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if(tmax < 0.0) {
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if(extend) a = a.Plus(dl.ScaledBy(tmax));
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DoLine(canvas, hcs, a, b);
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return 1;
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}
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if(tmin > 1.0) {
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if(extend) b = a.Plus(dl.ScaledBy(tmin));
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DoLine(canvas, hcs, a, b);
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return -1;
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}
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// This will happen if the entire line lies within the box.
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return 0;
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}
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void Constraint::DoArrow(Canvas *canvas, Canvas::hStroke hcs,
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Vector p, Vector dir, Vector n, double width, double angle, double da) {
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dir = dir.WithMagnitude(width / cos(angle));
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dir = dir.RotatedAbout(n, da);
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DoLine(canvas, hcs, p, p.Plus(dir.RotatedAbout(n, angle)));
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DoLine(canvas, hcs, p, p.Plus(dir.RotatedAbout(n, -angle)));
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}
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//-----------------------------------------------------------------------------
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// Draw a line with arrows on both ends, and possibly a gap in the middle for
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// the dimension. We will use these for most length dimensions. The length
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// being dimensioned is from A to B; but those points get extended perpendicular
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// to the line AB, until the line between the extensions crosses ref (the
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// center of the label).
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//-----------------------------------------------------------------------------
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void Constraint::DoLineWithArrows(Canvas *canvas, Canvas::hStroke hcs,
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Vector ref, Vector a, Vector b,
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bool onlyOneExt)
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{
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const Camera &camera = canvas->GetCamera();
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double pixels = 1.0 / camera.scale;
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Vector ab = a.Minus(b);
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Vector ar = a.Minus(ref);
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// Normal to a plane containing the line and the label origin.
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Vector n = ab.Cross(ar);
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// Within that plane, and normal to the line AB; so that's our extension
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// line.
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Vector out = ab.Cross(n).WithMagnitude(1);
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out = out.ScaledBy(-out.Dot(ar));
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Vector ae = a.Plus(out), be = b.Plus(out);
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// Extension lines extend 10 pixels beyond where the arrows get
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// drawn (which is at the same offset perpendicular from AB as the
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// label).
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DoLine(canvas, hcs, a, ae.Plus(out.WithMagnitude(10*pixels)));
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if(!onlyOneExt) {
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DoLine(canvas, hcs, b, be.Plus(out.WithMagnitude(10*pixels)));
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}
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int within = DoLineTrimmedAgainstBox(canvas, hcs, ref, ae, be);
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// Arrow heads are 13 pixels long, with an 18 degree half-angle.
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double theta = 18*PI/180;
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Vector arrow = (be.Minus(ae)).WithMagnitude(13*pixels);
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if(within != 0) {
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arrow = arrow.ScaledBy(-1);
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Vector seg = (be.Minus(ae)).WithMagnitude(18*pixels);
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if(within < 0) DoLine(canvas, hcs, ae, ae.Minus(seg));
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if(within > 0) DoLine(canvas, hcs, be, be.Plus(seg));
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}
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DoArrow(canvas, hcs, ae, arrow, n, 13.0 * pixels, theta, 0.0);
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DoArrow(canvas, hcs, be, arrow.Negated(), n, 13.0 * pixels, theta, 0.0);
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}
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void Constraint::DoEqualLenTicks(Canvas *canvas, Canvas::hStroke hcs,
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Vector a, Vector b, Vector gn, Vector *refp) {
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const Camera &camera = canvas->GetCamera();
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Vector m = (a.ScaledBy(1.0/3)).Plus(b.ScaledBy(2.0/3));
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if(refp) *refp = m;
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Vector ab = a.Minus(b);
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Vector n = (gn.Cross(ab)).WithMagnitude(10/camera.scale);
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DoLine(canvas, hcs, m.Minus(n), m.Plus(n));
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}
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void Constraint::DoEqualRadiusTicks(Canvas *canvas, Canvas::hStroke hcs,
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hEntity he, Vector *refp) {
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const Camera &camera = canvas->GetCamera();
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Entity *circ = SK.GetEntity(he);
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Vector center = SK.GetEntity(circ->point[0])->PointGetNum();
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double r = circ->CircleGetRadiusNum();
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Quaternion q = circ->Normal()->NormalGetNum();
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Vector u = q.RotationU(), v = q.RotationV();
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double theta;
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if(circ->type == Entity::Type::CIRCLE) {
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theta = PI/2;
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} else if(circ->type == Entity::Type::ARC_OF_CIRCLE) {
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double thetaa, thetab, dtheta;
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circ->ArcGetAngles(&thetaa, &thetab, &dtheta);
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theta = thetaa + dtheta/2;
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} else ssassert(false, "Unexpected entity type");
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Vector d = u.ScaledBy(cos(theta)).Plus(v.ScaledBy(sin(theta)));
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d = d.ScaledBy(r);
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Vector p = center.Plus(d);
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if(refp) *refp = p;
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Vector tick = d.WithMagnitude(10/camera.scale);
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DoLine(canvas, hcs, p.Plus(tick), p.Minus(tick));
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}
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void Constraint::DoArcForAngle(Canvas *canvas, Canvas::hStroke hcs,
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Vector a0, Vector da, Vector b0, Vector db,
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Vector offset, Vector *ref, bool trim)
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{
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const Camera &camera = canvas->GetCamera();
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double pixels = 1.0 / camera.scale;
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Vector gr = camera.projRight.ScaledBy(1.0);
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Vector gu = camera.projUp.ScaledBy(1.0);
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if(workplane != Entity::FREE_IN_3D) {
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a0 = a0.ProjectInto(workplane);
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b0 = b0.ProjectInto(workplane);
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da = da.ProjectVectorInto(workplane);
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db = db.ProjectVectorInto(workplane);
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}
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Vector a1 = a0.Plus(da);
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Vector b1 = b0.Plus(db);
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bool skew;
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Vector pi = Vector::AtIntersectionOfLines(a0, a0.Plus(da),
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b0, b0.Plus(db), &skew);
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if(!skew) {
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*ref = pi.Plus(offset);
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// We draw in a coordinate system centered at the intersection point.
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// One basis vector is da, and the other is normal to da and in
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// the plane that contains our lines (so normal to its normal).
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da = da.WithMagnitude(1);
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db = db.WithMagnitude(1);
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Vector norm = da.Cross(db);
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Vector dna = norm.Cross(da).WithMagnitude(1.0);
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Vector dnb = norm.Cross(db).WithMagnitude(1.0);
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// da and db magnitudes are 1.0
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double thetaf = acos(da.Dot(db));
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// Calculate median
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Vector m = da.ScaledBy(cos(thetaf/2)).Plus(
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dna.ScaledBy(sin(thetaf/2)));
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Vector rm = (*ref).Minus(pi);
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// Test which side we have to place an arc
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if(m.Dot(rm) < 0) {
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da = da.ScaledBy(-1); dna = dna.ScaledBy(-1);
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db = db.ScaledBy(-1); dnb = dnb.ScaledBy(-1);
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}
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double rda = rm.Dot(da), rdna = rm.Dot(dna);
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// Introduce minimal arc radius in pixels
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double r = max(sqrt(rda*rda + rdna*rdna), 15.0 * pixels);
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double th = Style::TextHeight(GetStyle()) / camera.scale;
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double swidth = VectorFont::Builtin()->GetWidth(th, Label()) + 8*pixels,
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sheight = VectorFont::Builtin()->GetCapHeight(th) + 6*pixels;
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double textR = sqrt(swidth * swidth + sheight * sheight) / 2.0;
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*ref = pi.Plus(rm.WithMagnitude(std::max(rm.Magnitude(), 15 * pixels + textR)));
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// Arrow points
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Vector apa = da. ScaledBy(r).Plus(pi);
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Vector apb = da. ScaledBy(r*cos(thetaf)).Plus(
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dna.ScaledBy(r*sin(thetaf))).Plus(pi);
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double arrowW = 13 * pixels;
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double arrowA = 18.0 * PI / 180.0;
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bool arrowVisible = apb.Minus(apa).Magnitude() > 2.5 * arrowW;
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// Arrow reversing indicator
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bool arrowRev = false;
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// The minimal extension length in angular representation
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double extAngle = 18 * pixels / r;
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// Arc additional angle
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double addAngle = 0.0;
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// Arc start angle
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double startAngle = 0.0;
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// Arc extension to db.
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// We have just enlarge angle value.
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if(HasLabel() && rm.Dot(dnb) > 0.0) {
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// rm direction projected to plane with u = da, v = dna
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Vector rmp = da.ScaledBy(rda).Plus(dna.ScaledBy(rdna)).WithMagnitude(1.0);
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// rmp and db magnitudes are 1.0
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addAngle = std::max(acos(rmp.Dot(db)), extAngle);
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if(arrowVisible) {
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startAngle = -extAngle;
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addAngle += extAngle;
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arrowRev = true;
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}
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}
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// Arc extension to da.
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// We are enlarge angle value and rewrite basis to align along rm projection.
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if(HasLabel() && rm.Dot(dna) < 0.0) {
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// rm direction projected to plane with u = da, v = dna
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Vector rmp = da.ScaledBy(rda).Plus(dna.ScaledBy(rdna)).WithMagnitude(1.0);
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// rmp and da magnitudes are 1.0
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startAngle = -std::max(acos(rmp.Dot(da)), extAngle);
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addAngle = -startAngle;
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if(arrowVisible) {
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addAngle += extAngle;
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arrowRev = true;
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}
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}
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Vector prev;
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int n = 30;
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for(int i = 0; i <= n; i++) {
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double theta = startAngle + (i*(thetaf + addAngle))/n;
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Vector p = da.ScaledBy(r*cos(theta)).Plus(
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dna.ScaledBy(r*sin(theta))).Plus(pi);
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if(i > 0) {
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if(trim) {
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DoLineTrimmedAgainstBox(canvas, hcs, *ref, prev, p,
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/*extend=*/false, gr, gu, swidth, sheight + 2*pixels);
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} else {
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DoLine(canvas, hcs, prev, p);
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}
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}
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prev = p;
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}
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DoLineExtend(canvas, hcs, a0, a1, apa, 5.0 * pixels);
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DoLineExtend(canvas, hcs, b0, b1, apb, 5.0 * pixels);
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// Draw arrows only when we have enough space.
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if(arrowVisible) {
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double angleCorr = arrowW / (2.0 * r);
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if(arrowRev) {
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dna = dna.ScaledBy(-1.0);
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angleCorr = -angleCorr;
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}
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DoArrow(canvas, hcs, apa, dna, norm, arrowW, arrowA, angleCorr);
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DoArrow(canvas, hcs, apb, dna, norm, arrowW, arrowA, thetaf + PI - angleCorr);
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}
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} else {
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// The lines are skew; no wonderful way to illustrate that.
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*ref = a0.Plus(b0);
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*ref = (*ref).ScaledBy(0.5).Plus(disp.offset);
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gu = gu.WithMagnitude(1);
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double textHeight = Style::TextHeight(GetStyle()) / camera.scale;
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Vector trans =
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(*ref).Plus(gu.ScaledBy(-1.5*VectorFont::Builtin()->GetCapHeight(textHeight)));
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canvas->DrawVectorText("angle between skew lines", textHeight,
|
|
trans, gr.WithMagnitude(1), gu.WithMagnitude(1),
|
|
hcs);
|
|
}
|
|
}
|
|
|
|
bool Constraint::IsVisible() const {
|
|
if(!SS.GW.showConstraints) return false;
|
|
Group *g = SK.GetGroup(group);
|
|
// If the group is hidden, then the constraints are hidden and not
|
|
// able to be selected.
|
|
if(!(g->visible)) return false;
|
|
// And likewise if the group is not the active group; except for comments
|
|
// with an assigned style.
|
|
if(g->h != SS.GW.activeGroup && !(type == Type::COMMENT && disp.style.v)) {
|
|
return false;
|
|
}
|
|
if(disp.style.v) {
|
|
Style *s = Style::Get(disp.style);
|
|
if(!s->visible) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool Constraint::DoLineExtend(Canvas *canvas, Canvas::hStroke hcs,
|
|
Vector p0, Vector p1, Vector pt, double salient) {
|
|
Vector dir = p1.Minus(p0);
|
|
double k = dir.Dot(pt.Minus(p0)) / dir.Dot(dir);
|
|
Vector ptOnLine = p0.Plus(dir.ScaledBy(k));
|
|
|
|
// Draw projection line.
|
|
DoLine(canvas, hcs, pt, ptOnLine);
|
|
|
|
// Calculate salient direction.
|
|
Vector sd = dir.WithMagnitude(1.0).ScaledBy(salient);
|
|
|
|
Vector from;
|
|
Vector to;
|
|
|
|
if(k < 0.0) {
|
|
from = p0;
|
|
to = ptOnLine.Minus(sd);
|
|
} else if(k > 1.0) {
|
|
from = p1;
|
|
to = ptOnLine.Plus(sd);
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
// Draw extension line.
|
|
DoLine(canvas, hcs, from, to);
|
|
return true;
|
|
}
|
|
|
|
void Constraint::DoLayout(DrawAs how, Canvas *canvas,
|
|
Vector *labelPos, std::vector<Vector> *refs) {
|
|
if(!(how == DrawAs::HOVERED || how == DrawAs::SELECTED) &&
|
|
!IsVisible()) return;
|
|
|
|
// Unit vectors that describe our current view of the scene. One pixel
|
|
// long, not one actual unit.
|
|
const Camera &camera = canvas->GetCamera();
|
|
Vector gr = camera.projRight.ScaledBy(1/camera.scale);
|
|
Vector gu = camera.projUp.ScaledBy(1/camera.scale);
|
|
Vector gn = (gr.Cross(gu)).WithMagnitude(1/camera.scale);
|
|
|
|
double textHeight = Style::TextHeight(GetStyle()) / camera.scale;
|
|
|
|
RgbaColor color = {};
|
|
switch(how) {
|
|
case DrawAs::DEFAULT: color = Style::Color(GetStyle()); break;
|
|
case DrawAs::HOVERED: color = Style::Color(Style::HOVERED); break;
|
|
case DrawAs::SELECTED: color = Style::Color(Style::SELECTED); break;
|
|
}
|
|
Canvas::Stroke stroke = Style::Stroke(GetStyle());
|
|
stroke.layer = Canvas::Layer::FRONT;
|
|
stroke.color = color;
|
|
stroke.zIndex = 4;
|
|
Canvas::hStroke hcs = canvas->GetStroke(stroke);
|
|
|
|
Canvas::Fill fill = {};
|
|
fill.layer = Canvas::Layer::FRONT;
|
|
fill.color = color;
|
|
fill.zIndex = stroke.zIndex;
|
|
Canvas::hFill hcf = canvas->GetFill(fill);
|
|
|
|
switch(type) {
|
|
case Type::PT_PT_DISTANCE: {
|
|
Vector ap = SK.GetEntity(ptA)->PointGetNum();
|
|
Vector bp = SK.GetEntity(ptB)->PointGetNum();
|
|
|
|
if(workplane != Entity::FREE_IN_3D) {
|
|
DoProjectedPoint(canvas, hcs, &ap);
|
|
DoProjectedPoint(canvas, hcs, &bp);
|
|
}
|
|
|
|
Vector ref = ((ap.Plus(bp)).ScaledBy(0.5)).Plus(disp.offset);
|
|
if(refs) refs->push_back(ref);
|
|
|
|
DoLineWithArrows(canvas, hcs, ref, ap, bp, /*onlyOneExt=*/false);
|
|
DoLabel(canvas, hcs, ref, labelPos, gr, gu);
|
|
return;
|
|
}
|
|
|
|
case Type::PROJ_PT_DISTANCE: {
|
|
Vector ap = SK.GetEntity(ptA)->PointGetNum(),
|
|
bp = SK.GetEntity(ptB)->PointGetNum(),
|
|
dp = (bp.Minus(ap)),
|
|
pp = SK.GetEntity(entityA)->VectorGetNum();
|
|
|
|
Vector ref = ((ap.Plus(bp)).ScaledBy(0.5)).Plus(disp.offset);
|
|
if(refs) refs->push_back(ref);
|
|
|
|
pp = pp.WithMagnitude(1);
|
|
double d = dp.Dot(pp);
|
|
Vector bpp = ap.Plus(pp.ScaledBy(d));
|
|
DoStippledLine(canvas, hcs, ap, bpp);
|
|
DoStippledLine(canvas, hcs, bp, bpp);
|
|
|
|
DoLineWithArrows(canvas, hcs, ref, ap, bpp, /*onlyOneExt=*/false);
|
|
DoLabel(canvas, hcs, ref, labelPos, gr, gu);
|
|
return;
|
|
}
|
|
|
|
case Type::PT_FACE_DISTANCE:
|
|
case Type::PT_PLANE_DISTANCE: {
|
|
Vector pt = SK.GetEntity(ptA)->PointGetNum();
|
|
Entity *enta = SK.GetEntity(entityA);
|
|
Vector n, p;
|
|
if(type == Type::PT_PLANE_DISTANCE) {
|
|
n = enta->Normal()->NormalN();
|
|
p = enta->WorkplaneGetOffset();
|
|
} else {
|
|
n = enta->FaceGetNormalNum();
|
|
p = enta->FaceGetPointNum();
|
|
}
|
|
|
|
double d = (p.Minus(pt)).Dot(n);
|
|
Vector closest = pt.Plus(n.WithMagnitude(d));
|
|
|
|
Vector ref = ((closest.Plus(pt)).ScaledBy(0.5)).Plus(disp.offset);
|
|
if(refs) refs->push_back(ref);
|
|
|
|
if(!pt.Equals(closest)) {
|
|
DoLineWithArrows(canvas, hcs, ref, pt, closest, /*onlyOneExt=*/true);
|
|
}
|
|
|
|
DoLabel(canvas, hcs, ref, labelPos, gr, gu);
|
|
return;
|
|
}
|
|
|
|
case Type::PT_LINE_DISTANCE: {
|
|
Vector pt = SK.GetEntity(ptA)->PointGetNum();
|
|
Entity *line = SK.GetEntity(entityA);
|
|
Vector lA = SK.GetEntity(line->point[0])->PointGetNum();
|
|
Vector lB = SK.GetEntity(line->point[1])->PointGetNum();
|
|
Vector dl = lB.Minus(lA);
|
|
|
|
if(workplane != Entity::FREE_IN_3D) {
|
|
lA = lA.ProjectInto(workplane);
|
|
lB = lB.ProjectInto(workplane);
|
|
DoProjectedPoint(canvas, hcs, &pt);
|
|
}
|
|
|
|
// Find the closest point on the line
|
|
Vector closest = pt.ClosestPointOnLine(lA, dl);
|
|
|
|
Vector ref = ((closest.Plus(pt)).ScaledBy(0.5)).Plus(disp.offset);
|
|
if(refs) refs->push_back(ref);
|
|
DoLabel(canvas, hcs, ref, labelPos, gr, gu);
|
|
|
|
if(!pt.Equals(closest)) {
|
|
DoLineWithArrows(canvas, hcs, ref, pt, closest, /*onlyOneExt=*/true);
|
|
|
|
// Draw projected point
|
|
Vector a = pt;
|
|
Vector b = closest;
|
|
Vector ab = a.Minus(b);
|
|
Vector ar = a.Minus(ref);
|
|
Vector n = ab.Cross(ar);
|
|
Vector out = ab.Cross(n).WithMagnitude(1);
|
|
out = out.ScaledBy(-out.Dot(ar));
|
|
Vector be = b.Plus(out);
|
|
Vector np = lA.Minus(pt).Cross(lB.Minus(pt)).WithMagnitude(1.0);
|
|
DoProjectedPoint(canvas, hcs, &be, np, pt);
|
|
|
|
// Extensions to line
|
|
double pixels = 1.0 / camera.scale;
|
|
Vector refClosest = ref.ClosestPointOnLine(lA, dl);
|
|
double ddl = dl.Dot(dl);
|
|
if(fabs(ddl) > LENGTH_EPS * LENGTH_EPS) {
|
|
double t = refClosest.Minus(lA).Dot(dl) / ddl;
|
|
if(t < 0.0) {
|
|
DoLine(canvas, hcs, refClosest.Minus(dl.WithMagnitude(10.0 * pixels)), lA);
|
|
} else if(t > 1.0) {
|
|
DoLine(canvas, hcs, refClosest.Plus(dl.WithMagnitude(10.0 * pixels)), lB);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(workplane != Entity::FREE_IN_3D) {
|
|
// Draw the projection marker from the closest point on the
|
|
// projected line to the projected point on the real line.
|
|
Vector lAB = (lA.Minus(lB));
|
|
double t = (lA.Minus(closest)).DivProjected(lAB);
|
|
|
|
Vector lA = SK.GetEntity(line->point[0])->PointGetNum();
|
|
Vector lB = SK.GetEntity(line->point[1])->PointGetNum();
|
|
|
|
Vector c2 = (lA.ScaledBy(1-t)).Plus(lB.ScaledBy(t));
|
|
DoProjectedPoint(canvas, hcs, &c2);
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::DIAMETER: {
|
|
Entity *circle = SK.GetEntity(entityA);
|
|
Vector center = SK.GetEntity(circle->point[0])->PointGetNum();
|
|
Quaternion q = SK.GetEntity(circle->normal)->NormalGetNum();
|
|
Vector n = q.RotationN().WithMagnitude(1);
|
|
double r = circle->CircleGetRadiusNum();
|
|
|
|
Vector ref = center.Plus(disp.offset);
|
|
// Force the label into the same plane as the circle.
|
|
ref = ref.Minus(n.ScaledBy(n.Dot(ref) - n.Dot(center)));
|
|
if(refs) refs->push_back(ref);
|
|
|
|
Vector mark = ref.Minus(center);
|
|
mark = mark.WithMagnitude(mark.Magnitude()-r);
|
|
DoLineTrimmedAgainstBox(canvas, hcs, ref, ref, ref.Minus(mark));
|
|
|
|
Vector topLeft;
|
|
DoLabel(canvas, hcs, ref, &topLeft, gr, gu);
|
|
if(labelPos) *labelPos = topLeft;
|
|
return;
|
|
}
|
|
|
|
case Type::POINTS_COINCIDENT: {
|
|
if(how == DrawAs::DEFAULT) {
|
|
// Let's adjust the color of this constraint to have the same
|
|
// rough luma as the point color, so that the constraint does not
|
|
// stand out in an ugly way.
|
|
RgbaColor cd = Style::Color(Style::DATUM),
|
|
cc = Style::Color(Style::CONSTRAINT);
|
|
// convert from 8-bit color to a vector
|
|
Vector vd = Vector::From(cd.redF(), cd.greenF(), cd.blueF()),
|
|
vc = Vector::From(cc.redF(), cc.greenF(), cc.blueF());
|
|
// and scale the constraint color to have the same magnitude as
|
|
// the datum color, maybe a bit dimmer
|
|
vc = vc.WithMagnitude(vd.Magnitude()*0.9);
|
|
// and set the color to that.
|
|
fill.color = RGBf(vc.x, vc.y, vc.z);
|
|
hcf = canvas->GetFill(fill);
|
|
}
|
|
|
|
for(int a = 0; a < 2; a++) {
|
|
Vector r = camera.projRight.ScaledBy((a+1)/camera.scale);
|
|
Vector d = camera.projUp.ScaledBy((2-a)/camera.scale);
|
|
for(int i = 0; i < 2; i++) {
|
|
Vector p = SK.GetEntity(i == 0 ? ptA : ptB)-> PointGetNum();
|
|
if(refs) refs->push_back(p);
|
|
canvas->DrawQuad(p.Plus (r).Plus (d),
|
|
p.Plus (r).Minus(d),
|
|
p.Minus(r).Minus(d),
|
|
p.Minus(r).Plus (d),
|
|
hcf);
|
|
}
|
|
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::PT_ON_CIRCLE:
|
|
case Type::PT_ON_LINE:
|
|
case Type::PT_ON_FACE:
|
|
case Type::PT_IN_PLANE: {
|
|
double s = 8/camera.scale;
|
|
Vector p = SK.GetEntity(ptA)->PointGetNum();
|
|
if(refs) refs->push_back(p);
|
|
Vector r, d;
|
|
if(type == Type::PT_ON_FACE) {
|
|
Vector n = SK.GetEntity(entityA)->FaceGetNormalNum();
|
|
r = n.Normal(0);
|
|
d = n.Normal(1);
|
|
} else if(type == Type::PT_IN_PLANE) {
|
|
EntityBase *n = SK.GetEntity(entityA)->Normal();
|
|
r = n->NormalU();
|
|
d = n->NormalV();
|
|
} else {
|
|
r = gr;
|
|
d = gu;
|
|
s *= (6.0/8); // draw these a little smaller
|
|
}
|
|
r = r.WithMagnitude(s); d = d.WithMagnitude(s);
|
|
DoLine(canvas, hcs, p.Plus (r).Plus (d), p.Plus (r).Minus(d));
|
|
DoLine(canvas, hcs, p.Plus (r).Minus(d), p.Minus(r).Minus(d));
|
|
DoLine(canvas, hcs, p.Minus(r).Minus(d), p.Minus(r).Plus (d));
|
|
DoLine(canvas, hcs, p.Minus(r).Plus (d), p.Plus (r).Plus (d));
|
|
return;
|
|
}
|
|
|
|
case Type::WHERE_DRAGGED: {
|
|
Vector p = SK.GetEntity(ptA)->PointGetNum();
|
|
if(refs) refs->push_back(p);
|
|
Vector u = p.Plus(gu.WithMagnitude(8/camera.scale)).Plus(
|
|
gr.WithMagnitude(8/camera.scale)),
|
|
uu = u.Minus(gu.WithMagnitude(5/camera.scale)),
|
|
ur = u.Minus(gr.WithMagnitude(5/camera.scale));
|
|
// Draw four little crop marks, uniformly spaced (by ninety
|
|
// degree rotations) around the point.
|
|
int i;
|
|
for(i = 0; i < 4; i++) {
|
|
DoLine(canvas, hcs, u, uu);
|
|
DoLine(canvas, hcs, u, ur);
|
|
u = u.RotatedAbout(p, gn, PI/2);
|
|
ur = ur.RotatedAbout(p, gn, PI/2);
|
|
uu = uu.RotatedAbout(p, gn, PI/2);
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::SAME_ORIENTATION: {
|
|
for(int i = 0; i < 2; i++) {
|
|
Entity *e = SK.GetEntity(i == 0 ? entityA : entityB);
|
|
Quaternion q = e->NormalGetNum();
|
|
Vector n = q.RotationN().WithMagnitude(25/camera.scale);
|
|
Vector u = q.RotationU().WithMagnitude(6/camera.scale);
|
|
Vector p = SK.GetEntity(e->point[0])->PointGetNum();
|
|
p = p.Plus(n.WithMagnitude(10/camera.scale));
|
|
if(refs) refs->push_back(p);
|
|
|
|
DoLine(canvas, hcs, p.Plus(u), p.Minus(u).Plus(n));
|
|
DoLine(canvas, hcs, p.Minus(u), p.Plus(u).Plus(n));
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::EQUAL_ANGLE: {
|
|
Vector ref;
|
|
Entity *a = SK.GetEntity(entityA);
|
|
Entity *b = SK.GetEntity(entityB);
|
|
Entity *c = SK.GetEntity(entityC);
|
|
Entity *d = SK.GetEntity(entityD);
|
|
|
|
Vector a0 = a->VectorGetStartPoint();
|
|
Vector b0 = b->VectorGetStartPoint();
|
|
Vector c0 = c->VectorGetStartPoint();
|
|
Vector d0 = d->VectorGetStartPoint();
|
|
Vector da = a->VectorGetNum();
|
|
Vector db = b->VectorGetNum();
|
|
Vector dc = c->VectorGetNum();
|
|
Vector dd = d->VectorGetNum();
|
|
|
|
if(other) {
|
|
a0 = a0.Plus(da);
|
|
da = da.ScaledBy(-1);
|
|
}
|
|
|
|
DoArcForAngle(canvas, hcs, a0, da, b0, db,
|
|
da.WithMagnitude(40/camera.scale), &ref, /*trim=*/false);
|
|
if(refs) refs->push_back(ref);
|
|
DoArcForAngle(canvas, hcs, c0, dc, d0, dd,
|
|
dc.WithMagnitude(40/camera.scale), &ref, /*trim=*/false);
|
|
if(refs) refs->push_back(ref);
|
|
|
|
return;
|
|
}
|
|
|
|
case Type::ANGLE: {
|
|
Entity *a = SK.GetEntity(entityA);
|
|
Entity *b = SK.GetEntity(entityB);
|
|
|
|
Vector a0 = a->VectorGetStartPoint();
|
|
Vector b0 = b->VectorGetStartPoint();
|
|
Vector da = a->VectorGetNum();
|
|
Vector db = b->VectorGetNum();
|
|
if(other) {
|
|
a0 = a0.Plus(da);
|
|
da = da.ScaledBy(-1);
|
|
}
|
|
|
|
Vector ref;
|
|
DoArcForAngle(canvas, hcs, a0, da, b0, db, disp.offset, &ref, /*trim=*/true);
|
|
DoLabel(canvas, hcs, ref, labelPos, gr, gu);
|
|
if(refs) refs->push_back(ref);
|
|
return;
|
|
}
|
|
|
|
case Type::PERPENDICULAR: {
|
|
Vector u = Vector::From(0, 0, 0), v = Vector::From(0, 0, 0);
|
|
Vector rn, ru;
|
|
if(workplane == Entity::FREE_IN_3D) {
|
|
rn = gn;
|
|
ru = gu;
|
|
} else {
|
|
EntityBase *normal = SK.GetEntity(workplane)->Normal();
|
|
rn = normal->NormalN();
|
|
ru = normal->NormalV(); // ru meaning r_up, not u/v
|
|
}
|
|
|
|
for(int i = 0; i < 2; i++) {
|
|
Entity *e = SK.GetEntity(i == 0 ? entityA : entityB);
|
|
|
|
if(i == 0) {
|
|
// Calculate orientation of perpendicular sign only
|
|
// once, so that it's the same both times it's drawn
|
|
u = e->VectorGetNum();
|
|
u = u.WithMagnitude(16/camera.scale);
|
|
v = (rn.Cross(u)).WithMagnitude(16/camera.scale);
|
|
// a bit of bias to stop it from flickering between the
|
|
// two possibilities
|
|
if(fabs(u.Dot(ru)) < fabs(v.Dot(ru)) + LENGTH_EPS) {
|
|
swap(u, v);
|
|
}
|
|
if(u.Dot(ru) < 0) u = u.ScaledBy(-1);
|
|
}
|
|
|
|
Vector p = e->VectorGetRefPoint();
|
|
Vector s = p.Plus(u).Plus(v);
|
|
DoLine(canvas, hcs, s, s.Plus(v));
|
|
Vector m = s.Plus(v.ScaledBy(0.5));
|
|
DoLine(canvas, hcs, m, m.Plus(u));
|
|
if(refs) refs->push_back(m);
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::CURVE_CURVE_TANGENT:
|
|
case Type::CUBIC_LINE_TANGENT:
|
|
case Type::ARC_LINE_TANGENT: {
|
|
Vector textAt, u, v;
|
|
|
|
if(type == Type::ARC_LINE_TANGENT) {
|
|
Entity *arc = SK.GetEntity(entityA);
|
|
Entity *norm = SK.GetEntity(arc->normal);
|
|
Vector c = SK.GetEntity(arc->point[0])->PointGetNum();
|
|
Vector p =
|
|
SK.GetEntity(arc->point[other ? 2 : 1])->PointGetNum();
|
|
Vector r = p.Minus(c);
|
|
textAt = p.Plus(r.WithMagnitude(14/camera.scale));
|
|
u = norm->NormalU();
|
|
v = norm->NormalV();
|
|
} else if(type == Type::CUBIC_LINE_TANGENT) {
|
|
Vector n;
|
|
if(workplane == Entity::FREE_IN_3D) {
|
|
u = gr;
|
|
v = gu;
|
|
n = gn;
|
|
} else {
|
|
EntityBase *wn = SK.GetEntity(workplane)->Normal();
|
|
u = wn->NormalU();
|
|
v = wn->NormalV();
|
|
n = wn->NormalN();
|
|
}
|
|
|
|
Entity *cubic = SK.GetEntity(entityA);
|
|
Vector p = other ? cubic->CubicGetFinishNum() :
|
|
cubic->CubicGetStartNum();
|
|
Vector dir = SK.GetEntity(entityB)->VectorGetNum();
|
|
Vector out = n.Cross(dir);
|
|
textAt = p.Plus(out.WithMagnitude(14/camera.scale));
|
|
} else {
|
|
Vector n, dir;
|
|
EntityBase *wn = SK.GetEntity(workplane)->Normal();
|
|
u = wn->NormalU();
|
|
v = wn->NormalV();
|
|
n = wn->NormalN();
|
|
EntityBase *eA = SK.GetEntity(entityA);
|
|
// Big pain; we have to get a vector tangent to the curve
|
|
// at the shared point, which could be from either a cubic
|
|
// or an arc.
|
|
if(other) {
|
|
textAt = eA->EndpointFinish();
|
|
if(eA->type == Entity::Type::CUBIC) {
|
|
dir = eA->CubicGetFinishTangentNum();
|
|
} else {
|
|
dir = SK.GetEntity(eA->point[0])->PointGetNum().Minus(
|
|
SK.GetEntity(eA->point[2])->PointGetNum());
|
|
dir = n.Cross(dir);
|
|
}
|
|
} else {
|
|
textAt = eA->EndpointStart();
|
|
if(eA->type == Entity::Type::CUBIC) {
|
|
dir = eA->CubicGetStartTangentNum();
|
|
} else {
|
|
dir = SK.GetEntity(eA->point[0])->PointGetNum().Minus(
|
|
SK.GetEntity(eA->point[1])->PointGetNum());
|
|
dir = n.Cross(dir);
|
|
}
|
|
}
|
|
dir = n.Cross(dir);
|
|
textAt = textAt.Plus(dir.WithMagnitude(14/camera.scale));
|
|
}
|
|
|
|
Vector ex = VectorFont::Builtin()->GetExtents(textHeight, "T");
|
|
canvas->DrawVectorText("T", textHeight, textAt.Minus(ex.ScaledBy(0.5)),
|
|
u.WithMagnitude(1), v.WithMagnitude(1), hcs);
|
|
if(refs) refs->push_back(textAt);
|
|
return;
|
|
}
|
|
|
|
case Type::PARALLEL: {
|
|
for(int i = 0; i < 2; i++) {
|
|
Entity *e = SK.GetEntity(i == 0 ? entityA : entityB);
|
|
Vector n = e->VectorGetNum();
|
|
n = n.WithMagnitude(25/camera.scale);
|
|
Vector u = (gn.Cross(n)).WithMagnitude(4/camera.scale);
|
|
Vector p = e->VectorGetRefPoint();
|
|
|
|
DoLine(canvas, hcs, p.Plus(u), p.Plus(u).Plus(n));
|
|
DoLine(canvas, hcs, p.Minus(u), p.Minus(u).Plus(n));
|
|
if(refs) refs->push_back(p.Plus(n.ScaledBy(0.5)));
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::EQUAL_RADIUS: {
|
|
for(int i = 0; i < 2; i++) {
|
|
Vector ref;
|
|
DoEqualRadiusTicks(canvas, hcs, i == 0 ? entityA : entityB, &ref);
|
|
if(refs) refs->push_back(ref);
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::EQUAL_LINE_ARC_LEN: {
|
|
Entity *line = SK.GetEntity(entityA);
|
|
Vector ref;
|
|
DoEqualLenTicks(canvas, hcs,
|
|
SK.GetEntity(line->point[0])->PointGetNum(),
|
|
SK.GetEntity(line->point[1])->PointGetNum(),
|
|
gn, &ref);
|
|
if(refs) refs->push_back(ref);
|
|
DoEqualRadiusTicks(canvas, hcs, entityB, &ref);
|
|
if(refs) refs->push_back(ref);
|
|
return;
|
|
}
|
|
|
|
case Type::LENGTH_RATIO:
|
|
case Type::LENGTH_DIFFERENCE:
|
|
case Type::EQUAL_LENGTH_LINES: {
|
|
Vector a, b = Vector::From(0, 0, 0);
|
|
for(int i = 0; i < 2; i++) {
|
|
Entity *e = SK.GetEntity(i == 0 ? entityA : entityB);
|
|
a = SK.GetEntity(e->point[0])->PointGetNum();
|
|
b = SK.GetEntity(e->point[1])->PointGetNum();
|
|
|
|
if(workplane != Entity::FREE_IN_3D) {
|
|
DoProjectedPoint(canvas, hcs, &a);
|
|
DoProjectedPoint(canvas, hcs, &b);
|
|
}
|
|
|
|
Vector ref;
|
|
DoEqualLenTicks(canvas, hcs, a, b, gn, &ref);
|
|
if(refs) refs->push_back(ref);
|
|
}
|
|
if((type == Type::LENGTH_RATIO) || (type == Type::LENGTH_DIFFERENCE)) {
|
|
Vector ref = ((a.Plus(b)).ScaledBy(0.5)).Plus(disp.offset);
|
|
DoLabel(canvas, hcs, ref, labelPos, gr, gu);
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::EQ_LEN_PT_LINE_D: {
|
|
Entity *forLen = SK.GetEntity(entityA);
|
|
Vector a = SK.GetEntity(forLen->point[0])->PointGetNum(),
|
|
b = SK.GetEntity(forLen->point[1])->PointGetNum();
|
|
if(workplane != Entity::FREE_IN_3D) {
|
|
DoProjectedPoint(canvas, hcs, &a);
|
|
DoProjectedPoint(canvas, hcs, &b);
|
|
}
|
|
Vector refa;
|
|
DoEqualLenTicks(canvas, hcs, a, b, gn, &refa);
|
|
if(refs) refs->push_back(refa);
|
|
|
|
Entity *ln = SK.GetEntity(entityB);
|
|
Vector la = SK.GetEntity(ln->point[0])->PointGetNum(),
|
|
lb = SK.GetEntity(ln->point[1])->PointGetNum();
|
|
Vector pt = SK.GetEntity(ptA)->PointGetNum();
|
|
if(workplane != Entity::FREE_IN_3D) {
|
|
DoProjectedPoint(canvas, hcs, &pt);
|
|
la = la.ProjectInto(workplane);
|
|
lb = lb.ProjectInto(workplane);
|
|
}
|
|
|
|
Vector closest = pt.ClosestPointOnLine(la, lb.Minus(la));
|
|
DoLine(canvas, hcs, pt, closest);
|
|
Vector refb;
|
|
DoEqualLenTicks(canvas, hcs, pt, closest, gn, &refb);
|
|
if(refs) refs->push_back(refb);
|
|
return;
|
|
}
|
|
|
|
case Type::EQ_PT_LN_DISTANCES: {
|
|
for(int i = 0; i < 2; i++) {
|
|
Entity *ln = SK.GetEntity(i == 0 ? entityA : entityB);
|
|
Vector la = SK.GetEntity(ln->point[0])->PointGetNum(),
|
|
lb = SK.GetEntity(ln->point[1])->PointGetNum();
|
|
Entity *pte = SK.GetEntity(i == 0 ? ptA : ptB);
|
|
Vector pt = pte->PointGetNum();
|
|
|
|
if(workplane != Entity::FREE_IN_3D) {
|
|
DoProjectedPoint(canvas, hcs, &pt);
|
|
la = la.ProjectInto(workplane);
|
|
lb = lb.ProjectInto(workplane);
|
|
}
|
|
|
|
Vector closest = pt.ClosestPointOnLine(la, lb.Minus(la));
|
|
DoLine(canvas, hcs, pt, closest);
|
|
|
|
Vector ref;
|
|
DoEqualLenTicks(canvas, hcs, pt, closest, gn, &ref);
|
|
if(refs) refs->push_back(ref);
|
|
}
|
|
return;
|
|
}
|
|
|
|
{
|
|
case Type::SYMMETRIC:
|
|
Vector n;
|
|
n = SK.GetEntity(entityA)->Normal()->NormalN(); goto s;
|
|
case Type::SYMMETRIC_HORIZ:
|
|
n = SK.GetEntity(workplane)->Normal()->NormalU(); goto s;
|
|
case Type::SYMMETRIC_VERT:
|
|
n = SK.GetEntity(workplane)->Normal()->NormalV(); goto s;
|
|
case Type::SYMMETRIC_LINE: {
|
|
Entity *ln = SK.GetEntity(entityA);
|
|
Vector la = SK.GetEntity(ln->point[0])->PointGetNum(),
|
|
lb = SK.GetEntity(ln->point[1])->PointGetNum();
|
|
la = la.ProjectInto(workplane);
|
|
lb = lb.ProjectInto(workplane);
|
|
n = lb.Minus(la);
|
|
Vector nw = SK.GetEntity(workplane)->Normal()->NormalN();
|
|
n = n.RotatedAbout(nw, PI/2);
|
|
goto s;
|
|
}
|
|
s:
|
|
Vector a = SK.GetEntity(ptA)->PointGetNum();
|
|
Vector b = SK.GetEntity(ptB)->PointGetNum();
|
|
|
|
for(int i = 0; i < 2; i++) {
|
|
Vector tail = (i == 0) ? a : b;
|
|
Vector d = (i == 0) ? b : a;
|
|
d = d.Minus(tail);
|
|
// Project the direction in which the arrow is drawn normal
|
|
// to the symmetry plane; for projected symmetry constraints,
|
|
// they might not be in the same direction, even when the
|
|
// constraint is fully solved.
|
|
d = n.ScaledBy(d.Dot(n));
|
|
d = d.WithMagnitude(20/camera.scale);
|
|
Vector tip = tail.Plus(d);
|
|
|
|
DoLine(canvas, hcs, tail, tip);
|
|
d = d.WithMagnitude(9/camera.scale);
|
|
DoLine(canvas, hcs, tip, tip.Minus(d.RotatedAbout(gn, 0.6)));
|
|
DoLine(canvas, hcs, tip, tip.Minus(d.RotatedAbout(gn, -0.6)));
|
|
if(refs) refs->push_back(tip);
|
|
}
|
|
return;
|
|
}
|
|
|
|
case Type::AT_MIDPOINT:
|
|
case Type::HORIZONTAL:
|
|
case Type::VERTICAL:
|
|
if(entityA.v) {
|
|
Vector r, u, n;
|
|
if(workplane == Entity::FREE_IN_3D) {
|
|
r = gr; u = gu; n = gn;
|
|
} else {
|
|
r = SK.GetEntity(workplane)->Normal()->NormalU();
|
|
u = SK.GetEntity(workplane)->Normal()->NormalV();
|
|
n = r.Cross(u);
|
|
}
|
|
// For "at midpoint", this branch is always taken.
|
|
Entity *e = SK.GetEntity(entityA);
|
|
Vector a = SK.GetEntity(e->point[0])->PointGetNum();
|
|
Vector b = SK.GetEntity(e->point[1])->PointGetNum();
|
|
Vector m = (a.ScaledBy(0.5)).Plus(b.ScaledBy(0.5));
|
|
Vector offset = (a.Minus(b)).Cross(n);
|
|
offset = offset.WithMagnitude(textHeight);
|
|
// Draw midpoint constraint on other side of line, so that
|
|
// a line can be midpoint and horizontal at same time.
|
|
if(type == Type::AT_MIDPOINT) offset = offset.ScaledBy(-1);
|
|
|
|
std::string s;
|
|
switch(type) {
|
|
case Type::HORIZONTAL: s = "H"; break;
|
|
case Type::VERTICAL: s = "V"; break;
|
|
case Type::AT_MIDPOINT: s = "M"; break;
|
|
default: ssassert(false, "Unexpected constraint type");
|
|
}
|
|
Vector o = m.Plus(offset).Plus(u.WithMagnitude(textHeight/5)),
|
|
ex = VectorFont::Builtin()->GetExtents(textHeight, s);
|
|
Vector shift = r.WithMagnitude(ex.x).Plus(
|
|
u.WithMagnitude(ex.y));
|
|
|
|
canvas->DrawVectorText(s, textHeight, o.Minus(shift.ScaledBy(0.5)),
|
|
r.WithMagnitude(1), u.WithMagnitude(1), hcs);
|
|
if(refs) refs->push_back(o);
|
|
} else {
|
|
Vector a = SK.GetEntity(ptA)->PointGetNum();
|
|
Vector b = SK.GetEntity(ptB)->PointGetNum();
|
|
|
|
Entity *w = SK.GetEntity(workplane);
|
|
Vector cu = w->Normal()->NormalU();
|
|
Vector cv = w->Normal()->NormalV();
|
|
Vector cn = w->Normal()->NormalN();
|
|
|
|
int i;
|
|
for(i = 0; i < 2; i++) {
|
|
Vector o = (i == 0) ? a : b;
|
|
Vector oo = (i == 0) ? a.Minus(b) : b.Minus(a);
|
|
Vector d = (type == Type::HORIZONTAL) ? cu : cv;
|
|
if(oo.Dot(d) < 0) d = d.ScaledBy(-1);
|
|
|
|
Vector dp = cn.Cross(d);
|
|
d = d.WithMagnitude(14/camera.scale);
|
|
Vector c = o.Minus(d);
|
|
DoLine(canvas, hcs, o, c);
|
|
d = d.WithMagnitude(3/camera.scale);
|
|
dp = dp.WithMagnitude(2/camera.scale);
|
|
canvas->DrawQuad((c.Plus(d)).Plus(dp),
|
|
(c.Minus(d)).Plus(dp),
|
|
(c.Minus(d)).Minus(dp),
|
|
(c.Plus(d)).Minus(dp),
|
|
hcf);
|
|
if(refs) refs->push_back(c);
|
|
}
|
|
}
|
|
return;
|
|
|
|
case Type::COMMENT: {
|
|
Vector u, v;
|
|
if(workplane == Entity::FREE_IN_3D) {
|
|
u = gr;
|
|
v = gu;
|
|
} else {
|
|
EntityBase *norm = SK.GetEntity(workplane)->Normal();
|
|
u = norm->NormalU();
|
|
v = norm->NormalV();
|
|
}
|
|
|
|
if(disp.style.v != 0) {
|
|
RgbaColor color = stroke.color;
|
|
stroke = Style::Stroke(disp.style);
|
|
stroke.layer = Canvas::Layer::FRONT;
|
|
if(how != DrawAs::DEFAULT) {
|
|
stroke.color = color;
|
|
}
|
|
hcs = canvas->GetStroke(stroke);
|
|
}
|
|
DoLabel(canvas, hcs, disp.offset, labelPos, u, v);
|
|
if(refs) refs->push_back(disp.offset);
|
|
return;
|
|
}
|
|
}
|
|
ssassert(false, "Unexpected constraint type");
|
|
}
|
|
|
|
void Constraint::Draw(DrawAs how, Canvas *canvas) {
|
|
DoLayout(how, canvas, NULL, NULL);
|
|
}
|
|
|
|
Vector Constraint::GetLabelPos(const Camera &camera) {
|
|
Vector p;
|
|
|
|
ObjectPicker canvas = {};
|
|
canvas.camera = camera;
|
|
DoLayout(DrawAs::DEFAULT, &canvas, &p, NULL);
|
|
canvas.Clear();
|
|
|
|
return p;
|
|
}
|
|
|
|
void Constraint::GetReferencePoints(const Camera &camera, std::vector<Vector> *refs) {
|
|
ObjectPicker canvas = {};
|
|
canvas.camera = camera;
|
|
DoLayout(DrawAs::DEFAULT, &canvas, NULL, refs);
|
|
canvas.Clear();
|
|
}
|
|
|
|
bool Constraint::IsStylable() const {
|
|
if(type == Type::COMMENT) return true;
|
|
return false;
|
|
}
|
|
|
|
hStyle Constraint::GetStyle() const {
|
|
if(disp.style.v != 0) return disp.style;
|
|
return { Style::CONSTRAINT };
|
|
}
|
|
|
|
bool Constraint::HasLabel() const {
|
|
switch(type) {
|
|
case Type::COMMENT:
|
|
case Type::PT_PT_DISTANCE:
|
|
case Type::PT_PLANE_DISTANCE:
|
|
case Type::PT_LINE_DISTANCE:
|
|
case Type::PT_FACE_DISTANCE:
|
|
case Type::PROJ_PT_DISTANCE:
|
|
case Type::LENGTH_RATIO:
|
|
case Type::LENGTH_DIFFERENCE:
|
|
case Type::DIAMETER:
|
|
case Type::ANGLE:
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|