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solvespace/draw.cpp

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#include "solvespace.h"
void GraphicsWindow::UpdateDraggedPoint(hEntity hp, double mx, double my) {
Entity *p = SK.GetEntity(hp);
Vector pos = p->PointGetNum();
UpdateDraggedNum(&pos, mx, my);
p->PointForceTo(pos);
}
void GraphicsWindow::UpdateDraggedNum(Vector *pos, double mx, double my) {
*pos = pos->Plus(projRight.ScaledBy((mx - orig.mouse.x)/scale));
*pos = pos->Plus(projUp.ScaledBy((my - orig.mouse.y)/scale));
orig.mouse.x = mx;
orig.mouse.y = my;
InvalidateGraphics();
}
void GraphicsWindow::MouseMoved(double x, double y, bool leftDown,
bool middleDown, bool rightDown, bool shiftDown, bool ctrlDown)
{
if(GraphicsEditControlIsVisible()) return;
if(context.active) return;
if(rightDown) {
middleDown = true;
shiftDown = !shiftDown;
}
if(SS.showToolbar) {
if(ToolbarMouseMoved((int)x, (int)y)) {
hover.Clear();
return;
}
}
Point2d mp = { x, y };
if(rightDown && orig.mouse.DistanceTo(mp) < 5 && !orig.startedMoving) {
// Avoid accidentally panning (or rotating if shift is down) if the
// user wants a context menu.
return;
}
orig.startedMoving = true;
// If the middle button is down, then mouse movement is used to pan and
// rotate our view. This wins over everything else.
if(middleDown) {
hover.Clear();
double dx = (x - orig.mouse.x) / scale;
double dy = (y - orig.mouse.y) / scale;
// When the view is locked, permit only translation (pan).
if(!(shiftDown || ctrlDown)) {
double s = 0.3*(PI/180)*scale; // degrees per pixel
projRight = orig.projRight.RotatedAbout(orig.projUp, -s*dx);
projUp = orig.projUp.RotatedAbout(orig.projRight, s*dy);
NormalizeProjectionVectors();
} else if(ctrlDown) {
double theta = atan2(orig.mouse.y, orig.mouse.x);
theta -= atan2(y, x);
Vector normal = orig.projRight.Cross(orig.projUp);
projRight = orig.projRight.RotatedAbout(normal, theta);
projUp = orig.projUp.RotatedAbout(normal, theta);
NormalizeProjectionVectors();
} else {
offset.x = orig.offset.x + dx*projRight.x + dy*projUp.x;
offset.y = orig.offset.y + dx*projRight.y + dy*projUp.y;
offset.z = orig.offset.z + dx*projRight.z + dy*projUp.z;
}
orig.projRight = projRight;
orig.projUp = projUp;
orig.offset = offset;
orig.mouse.x = x;
orig.mouse.y = y;
InvalidateGraphics();
return;
}
if(pending.operation == 0) {
double dm = orig.mouse.DistanceTo(mp);
// If we're currently not doing anything, then see if we should
// start dragging something.
if(leftDown && dm > 3) {
if(hover.entity.v) {
Entity *e = SK.GetEntity(hover.entity);
if(e->IsPoint()) {
// Start dragging this point.
ClearSelection();
pending.point = hover.entity;
pending.operation = DRAGGING_POINT;
} else if(e->type == Entity::CIRCLE) {
// Drag the radius.
ClearSelection();
pending.circle = hover.entity;
pending.operation = DRAGGING_RADIUS;
} else if(e->IsNormal()) {
ClearSelection();
pending.normal = hover.entity;
pending.operation = DRAGGING_NORMAL;
}
} else if(hover.constraint.v &&
SK.GetConstraint(hover.constraint)->HasLabel())
{
ClearSelection();
pending.constraint = hover.constraint;
pending.operation = DRAGGING_CONSTRAINT;
}
if(pending.operation != 0) {
// We just started a drag, so remember for the undo before
// the drag changes anything.
SS.UndoRemember();
}
} else {
// Otherwise, just hit test and give up; but don't hit test
// if the mouse is down, because then the user could hover
// a point, mouse down (thus selecting it), and drag, in an
// effort to drag the point, but instead hover a different
// entity before we move far enough to start the drag.
if(!leftDown) HitTestMakeSelection(mp);
}
return;
}
// If the user has started an operation from the menu, but not
// completed it, then just do the selection.
if(pending.operation < FIRST_PENDING) {
HitTestMakeSelection(mp);
return;
}
// We're currently dragging something; so do that. But if we haven't
// painted since the last time we solved, do nothing, because there's
// no sense solving a frame and not displaying it.
if(!havePainted) return;
switch(pending.operation) {
case DRAGGING_CONSTRAINT: {
Constraint *c = SK.constraint.FindById(pending.constraint);
UpdateDraggedNum(&(c->disp.offset), x, y);
break;
}
case DRAGGING_NEW_LINE_POINT:
HitTestMakeSelection(mp);
// and fall through
case DRAGGING_NEW_POINT:
case DRAGGING_POINT: {
Entity *p = SK.GetEntity(pending.point);
if((p->type == Entity::POINT_N_ROT_TRANS) &&
(shiftDown || ctrlDown))
{
// These points also come with a rotation, which the user can
// edit by pressing shift or control.
Quaternion q = p->PointGetQuaternion();
Vector p3 = p->PointGetNum();
Point2d p2 = ProjectPoint(p3);
Vector u = q.RotationU(), v = q.RotationV();
if(ctrlDown) {
double d = mp.DistanceTo(p2);
if(d < 25) {
// Don't start dragging the position about the normal
// until we're a little ways out, to get a reasonable
// reference pos
orig.mouse = mp;
break;
}
double theta = atan2(orig.mouse.y-p2.y, orig.mouse.x-p2.x);
theta -= atan2(y-p2.y, x-p2.x);
Vector gn = projRight.Cross(projUp);
u = u.RotatedAbout(gn, -theta);
v = v.RotatedAbout(gn, -theta);
} else {
double dx = -(x - orig.mouse.x);
double dy = -(y - orig.mouse.y);
double s = 0.3*(PI/180); // degrees per pixel
u = u.RotatedAbout(projUp, -s*dx);
u = u.RotatedAbout(projRight, s*dy);
v = v.RotatedAbout(projUp, -s*dx);
v = v.RotatedAbout(projRight, s*dy);
}
q = Quaternion::From(u, v);
p->PointForceQuaternionTo(q);
// Let's rotate about the selected point; so fix up the
// translation so that that point didn't move.
p->PointForceTo(p3);
orig.mouse = mp;
} else {
UpdateDraggedPoint(pending.point, x, y);
HitTestMakeSelection(mp);
}
SS.MarkGroupDirtyByEntity(pending.point);
break;
}
case DRAGGING_NEW_CUBIC_POINT: {
UpdateDraggedPoint(pending.point, x, y);
HitTestMakeSelection(mp);
hRequest hr = pending.point.request();
Vector p0 = SK.GetEntity(hr.entity(1))->PointGetNum();
Vector p3 = SK.GetEntity(hr.entity(4))->PointGetNum();
Vector p1 = p0.ScaledBy(2.0/3).Plus(p3.ScaledBy(1.0/3));
SK.GetEntity(hr.entity(2))->PointForceTo(p1);
Vector p2 = p0.ScaledBy(1.0/3).Plus(p3.ScaledBy(2.0/3));
SK.GetEntity(hr.entity(3))->PointForceTo(p2);
SS.MarkGroupDirtyByEntity(pending.point);
break;
}
case DRAGGING_NEW_ARC_POINT: {
UpdateDraggedPoint(pending.point, x, y);
HitTestMakeSelection(mp);
hRequest hr = pending.point.request();
Vector ona = SK.GetEntity(hr.entity(2))->PointGetNum();
Vector onb = SK.GetEntity(hr.entity(3))->PointGetNum();
Vector center = (ona.Plus(onb)).ScaledBy(0.5);
SK.GetEntity(hr.entity(1))->PointForceTo(center);
SS.MarkGroupDirtyByEntity(pending.point);
break;
}
case DRAGGING_NEW_RADIUS:
case DRAGGING_RADIUS: {
Entity *circle = SK.GetEntity(pending.circle);
Vector center = SK.GetEntity(circle->point[0])->PointGetNum();
Point2d c2 = ProjectPoint(center);
double r = c2.DistanceTo(mp)/scale;
SK.GetEntity(circle->distance)->DistanceForceTo(r);
SS.MarkGroupDirtyByEntity(pending.circle);
break;
}
case DRAGGING_NORMAL: {
Entity *normal = SK.GetEntity(pending.normal);
Vector p = SK.GetEntity(normal->point[0])->PointGetNum();
Point2d p2 = ProjectPoint(p);
Quaternion q = normal->NormalGetNum();
Vector u = q.RotationU(), v = q.RotationV();
if(ctrlDown) {
double theta = atan2(orig.mouse.y-p2.y, orig.mouse.x-p2.x);
theta -= atan2(y-p2.y, x-p2.x);
Vector normal = projRight.Cross(projUp);
u = u.RotatedAbout(normal, -theta);
v = v.RotatedAbout(normal, -theta);
} else {
double dx = -(x - orig.mouse.x);
double dy = -(y - orig.mouse.y);
double s = 0.3*(PI/180); // degrees per pixel
u = u.RotatedAbout(projUp, -s*dx);
u = u.RotatedAbout(projRight, s*dy);
v = v.RotatedAbout(projUp, -s*dx);
v = v.RotatedAbout(projRight, s*dy);
}
orig.mouse = mp;
normal->NormalForceTo(Quaternion::From(u, v));
SS.MarkGroupDirtyByEntity(pending.normal);
break;
}
default: oops();
}
if(pending.operation != 0 && pending.operation != DRAGGING_CONSTRAINT) {
SS.GenerateAll();
}
havePainted = false;
}
void GraphicsWindow::SpaceNavigatorMoved(double tx, double ty, double tz,
double rx, double ry, double rz,
bool shiftDown)
{
if(!havePainted) return;
Vector out = projRight.Cross(projUp);
// rotation vector is axis of rotation, and its magnitude is angle
Vector aa = Vector::From(rx, ry, rz);
// but it's given with respect to screen projection frame
aa = aa.ScaleOutOfCsys(projRight, projUp, out);
double aam = aa.Magnitude();
if(aam != 0.0) aa = aa.WithMagnitude(1);
// This can either transform our view, or transform an imported part.
GroupSelection();
Entity *e = NULL;
Group *g = NULL;
if(gs.points == 1 && gs.n == 1) e = SK.GetEntity(gs.point [0]);
if(gs.entities == 1 && gs.n == 1) e = SK.GetEntity(gs.entity[0]);
if(e) g = SK.GetGroup(e->group);
if(g && g->type == Group::IMPORTED && !shiftDown) {
// Apply the transformation to an imported part. Gain down the Z
// axis, since it's hard to see what you're doing on that one since
// it's normal to the screen.
Vector t = projRight.ScaledBy(tx/scale).Plus(
projUp .ScaledBy(ty/scale).Plus(
out .ScaledBy(0.1*tz/scale)));
Quaternion q = Quaternion::From(aa, aam);
// If we go five seconds without SpaceNavigator input, or if we've
// switched groups, then consider that a new action and save an undo
// point.
SDWORD now = GetMilliseconds();
if(now - lastSpaceNavigatorTime > 5000 ||
lastSpaceNavigatorGroup.v != g->h.v)
{
SS.UndoRemember();
}
g->TransformImportedBy(t, q);
lastSpaceNavigatorTime = now;
lastSpaceNavigatorGroup = g->h;
SS.MarkGroupDirty(g->h);
SS.later.generateAll = true;
} else {
// Apply the transformation to the view of the everything. The
// x and y components are translation; but z component is scale,
// not translation, or else it would do nothing in a parallel
// projection
offset = offset.Plus(projRight.ScaledBy(tx/scale));
offset = offset.Plus(projUp.ScaledBy(ty/scale));
scale *= exp(0.001*tz);
if(aam != 0.0) {
projRight = projRight.RotatedAbout(aa, -aam);
projUp = projUp. RotatedAbout(aa, -aam);
NormalizeProjectionVectors();
}
}
havePainted = false;
InvalidateGraphics();
}
void GraphicsWindow::SpaceNavigatorButtonUp(void) {
ZoomToFit(false);
InvalidateGraphics();
}
void GraphicsWindow::ClearPending(void) {
memset(&pending, 0, sizeof(pending));
}
void GraphicsWindow::MouseMiddleOrRightDown(double x, double y) {
if(GraphicsEditControlIsVisible()) return;
orig.offset = offset;
orig.projUp = projUp;
orig.projRight = projRight;
orig.mouse.x = x;
orig.mouse.y = y;
orig.startedMoving = false;
}
void GraphicsWindow::ContextMenuListStyles(void) {
CreateContextSubmenu();
Style *s;
bool empty = true;
for(s = SK.style.First(); s; s = SK.style.NextAfter(s)) {
if(s->h.v < Style::FIRST_CUSTOM) continue;
AddContextMenuItem(s->DescriptionString(), CMNU_FIRST_STYLE + s->h.v);
empty = false;
}
if(!empty) AddContextMenuItem(NULL, CONTEXT_SEPARATOR);
AddContextMenuItem("No Style", CMNU_NO_STYLE);
AddContextMenuItem("Newly Created Custom Style...", CMNU_NEW_CUSTOM_STYLE);
}
void GraphicsWindow::MouseRightUp(double x, double y) {
// Don't show a context menu if the user is right-clicking the toolbar,
// or if they are finishing a pan.
if(ToolbarMouseMoved((int)x, (int)y)) return;
if(orig.startedMoving) return;
if(context.active) return;
context.active = true;
if(pending.operation == DRAGGING_NEW_LINE_POINT) {
// Special case; use a right click to stop drawing lines, since
// a left click would draw another one. This is quicker and more
// intuitive than hitting escape.
ClearPending();
}
GroupSelection();
if(hover.IsEmpty() && gs.n == 0 && gs.constraints == 0) {
// No reason to display a context menu.
goto done;
}
// We can either work on the selection (like the functions are designed to)
// or on the hovered item. In the latter case we can fudge things by just
// selecting the hovered item, and then applying our operation to the
// selection.
bool toggleForStyles = false,
toggleForGroupInfo = false,
toggleForDelete = false,
toggleForStyleInfo = false;
if(!hover.IsEmpty()) {
AddContextMenuItem("Toggle Hovered Item Selection",
CMNU_TOGGLE_SELECTION);
}
if(gs.stylables > 0) {
ContextMenuListStyles();
AddContextMenuItem("Assign Selection to Style", CONTEXT_SUBMENU);
} else if(gs.n == 0 && gs.constraints == 0 && hover.IsStylable()) {
ContextMenuListStyles();
AddContextMenuItem("Assign Hovered Item to Style", CONTEXT_SUBMENU);
toggleForStyles = true;
}
if(gs.n + gs.constraints == 1) {
AddContextMenuItem("Group Info for Selected Item", CMNU_GROUP_INFO);
} else if(!hover.IsEmpty() && gs.n == 0 && gs.constraints == 0) {
AddContextMenuItem("Group Info for Hovered Item", CMNU_GROUP_INFO);
toggleForGroupInfo = true;
}
if(gs.n + gs.constraints == 1 && gs.stylables == 1) {
AddContextMenuItem("Style Info for Selected Item", CMNU_STYLE_INFO);
} else if(hover.IsStylable() && gs.n == 0 && gs.constraints == 0) {
AddContextMenuItem("Style Info for Hovered Item", CMNU_STYLE_INFO);
toggleForStyleInfo = true;
}
if(hover.constraint.v && gs.n == 0 && gs.constraints == 0) {
Constraint *c = SK.GetConstraint(hover.constraint);
if(c->HasLabel() && c->type != Constraint::COMMENT) {
AddContextMenuItem("Toggle Reference Dimension",
CMNU_REFERENCE_DIM);
}
if(c->type == Constraint::ANGLE ||
c->type == Constraint::EQUAL_ANGLE)
{
AddContextMenuItem("Other Supplementary Angle",
CMNU_OTHER_ANGLE);
}
}
if(gs.n > 0 || gs.constraints > 0) {
AddContextMenuItem(NULL, CONTEXT_SEPARATOR);
AddContextMenuItem("Delete Selection", CMNU_DELETE_SEL);
AddContextMenuItem("Unselect All", CMNU_UNSELECT_ALL);
} else if(!hover.IsEmpty()) {
AddContextMenuItem(NULL, CONTEXT_SEPARATOR);
AddContextMenuItem("Delete Hovered Item", CMNU_DELETE_SEL);
toggleForDelete = true;
}
int ret = ShowContextMenu();
switch(ret) {
case CMNU_TOGGLE_SELECTION:
ToggleSelectionStateOfHovered();
break;
case CMNU_UNSELECT_ALL:
MenuEdit(MNU_UNSELECT_ALL);
break;
case CMNU_DELETE_SEL:
if(toggleForDelete) ToggleSelectionStateOfHovered();
MenuEdit(MNU_DELETE);
break;
case CMNU_REFERENCE_DIM:
ToggleSelectionStateOfHovered();
Constraint::MenuConstrain(MNU_REFERENCE);
break;
case CMNU_OTHER_ANGLE:
ToggleSelectionStateOfHovered();
Constraint::MenuConstrain(MNU_OTHER_ANGLE);
break;
case CMNU_GROUP_INFO: {
if(toggleForGroupInfo) ToggleSelectionStateOfHovered();
hGroup hg;
GroupSelection();
if(gs.entities == 1) {
hg = SK.GetEntity(gs.entity[0])->group;
} else if(gs.points == 1) {
hg = SK.GetEntity(gs.point[0])->group;
} else if(gs.constraints == 1) {
hg = SK.GetConstraint(gs.constraint[0])->group;
} else {
break;
}
ClearSelection();
SS.TW.GoToScreen(TextWindow::SCREEN_GROUP_INFO);
SS.TW.shown.group = hg;
SS.later.showTW = true;
break;
}
case CMNU_STYLE_INFO: {
if(toggleForStyleInfo) ToggleSelectionStateOfHovered();
hStyle hs;
GroupSelection();
if(gs.entities == 1) {
hs = Style::ForEntity(gs.entity[0]);
} else if(gs.points == 1) {
hs = Style::ForEntity(gs.point[0]);
} else if(gs.constraints == 1) {
hs = SK.GetConstraint(gs.constraint[0])->disp.style;
if(!hs.v) hs.v = Style::CONSTRAINT;
} else {
break;
}
ClearSelection();
SS.TW.GoToScreen(TextWindow::SCREEN_STYLE_INFO);
SS.TW.shown.style = hs;
SS.later.showTW = true;
break;
}
case CMNU_NEW_CUSTOM_STYLE: {
if(toggleForStyles) ToggleSelectionStateOfHovered();
DWORD v = Style::CreateCustomStyle();
Style::AssignSelectionToStyle(v);
break;
}
case CMNU_NO_STYLE:
if(toggleForStyles) ToggleSelectionStateOfHovered();
Style::AssignSelectionToStyle(0);
break;
default:
if(ret >= CMNU_FIRST_STYLE) {
if(toggleForStyles) ToggleSelectionStateOfHovered();
Style::AssignSelectionToStyle(ret - CMNU_FIRST_STYLE);
}
// otherwise it was probably cancelled, so do nothing
break;
}
done:
context.active = false;
}
hRequest GraphicsWindow::AddRequest(int type) {
return AddRequest(type, true);
}
hRequest GraphicsWindow::AddRequest(int type, bool rememberForUndo) {
if(rememberForUndo) SS.UndoRemember();
Request r;
memset(&r, 0, sizeof(r));
r.group = activeGroup;
Group *g = SK.GetGroup(activeGroup);
if(g->type == Group::DRAWING_3D || g->type == Group::DRAWING_WORKPLANE) {
r.construction = false;
} else {
r.construction = true;
}
r.workplane = ActiveWorkplane();
r.type = type;
SK.request.AddAndAssignId(&r);
// We must regenerate the parameters, so that the code that tries to
// place this request's entities where the mouse is can do so. But
// we mustn't try to solve until reasonable values have been supplied
// for these new parameters, or else we'll get a numerical blowup.
SS.GenerateAll(-1, -1);
SS.MarkGroupDirty(r.group);
return r.h;
}
bool GraphicsWindow::ConstrainPointByHovered(hEntity pt) {
if(!hover.entity.v) return false;
Entity *e = SK.GetEntity(hover.entity);
if(e->IsPoint()) {
Constraint::ConstrainCoincident(e->h, pt);
return true;
}
if(e->IsCircle()) {
Constraint::Constrain(Constraint::PT_ON_CIRCLE,
pt, Entity::NO_ENTITY, e->h);
return true;
}
if(e->type == Entity::LINE_SEGMENT) {
Constraint::Constrain(Constraint::PT_ON_LINE,
pt, Entity::NO_ENTITY, e->h);
return true;
}
return false;
}
void GraphicsWindow::MouseLeftDown(double mx, double my) {
if(GraphicsEditControlIsVisible()) return;
HideTextEditControl();
if(SS.showToolbar) {
if(ToolbarMouseDown((int)mx, (int)my)) return;
}
// Make sure the hover is up to date.
MouseMoved(mx, my, false, false, false, false, false);
orig.mouse.x = mx;
orig.mouse.y = my;
// The current mouse location
Vector v = offset.ScaledBy(-1);
v = v.Plus(projRight.ScaledBy(mx/scale));
v = v.Plus(projUp.ScaledBy(my/scale));
hRequest hr;
switch(pending.operation) {
case MNU_DATUM_POINT:
hr = AddRequest(Request::DATUM_POINT);
SK.GetEntity(hr.entity(0))->PointForceTo(v);
ConstrainPointByHovered(hr.entity(0));
ClearSuper();
break;
case MNU_LINE_SEGMENT:
hr = AddRequest(Request::LINE_SEGMENT);
SK.GetEntity(hr.entity(1))->PointForceTo(v);
ConstrainPointByHovered(hr.entity(1));
ClearSuper();
pending.operation = DRAGGING_NEW_LINE_POINT;
pending.point = hr.entity(2);
pending.description = "click to place next point of line";
SK.GetEntity(pending.point)->PointForceTo(v);
break;
case MNU_RECTANGLE: {
if(!SS.GW.LockedInWorkplane()) {
Error("Can't draw rectangle in 3d; select a workplane first.");
ClearSuper();
break;
}
hRequest lns[4];
int i;
SS.UndoRemember();
for(i = 0; i < 4; i++) {
lns[i] = AddRequest(Request::LINE_SEGMENT, false);
}
for(i = 0; i < 4; i++) {
Constraint::ConstrainCoincident(
lns[i].entity(1), lns[(i+1)%4].entity(2));
SK.GetEntity(lns[i].entity(1))->PointForceTo(v);
SK.GetEntity(lns[i].entity(2))->PointForceTo(v);
}
for(i = 0; i < 4; i++) {
Constraint::Constrain(
(i % 2) ? Constraint::HORIZONTAL : Constraint::VERTICAL,
Entity::NO_ENTITY, Entity::NO_ENTITY,
lns[i].entity(0));
}
ConstrainPointByHovered(lns[2].entity(1));
pending.operation = DRAGGING_NEW_POINT;
pending.point = lns[1].entity(2);
pending.description = "click to place other corner of rectangle";
break;
}
case MNU_CIRCLE:
hr = AddRequest(Request::CIRCLE);
SK.GetEntity(hr.entity(1))->PointForceTo(v);
SK.GetEntity(hr.entity(32))->NormalForceTo(
Quaternion::From(SS.GW.projRight, SS.GW.projUp));
ConstrainPointByHovered(hr.entity(1));
ClearSuper();
pending.operation = DRAGGING_NEW_RADIUS;
pending.circle = hr.entity(0);
pending.description = "click to set radius";
SK.GetParam(hr.param(0))->val = 0;
break;
case MNU_ARC: {
if(!SS.GW.LockedInWorkplane()) {
Error("Can't draw arc in 3d; select a workplane first.");
ClearPending();
break;
}
hr = AddRequest(Request::ARC_OF_CIRCLE);
// This fudge factor stops us from immediately failing to solve
// because of the arc's implicit (equal radius) tangent.
Vector adj = SS.GW.projRight.WithMagnitude(2/SS.GW.scale);
SK.GetEntity(hr.entity(1))->PointForceTo(v.Minus(adj));
SK.GetEntity(hr.entity(2))->PointForceTo(v);
SK.GetEntity(hr.entity(3))->PointForceTo(v);
ConstrainPointByHovered(hr.entity(2));
ClearSuper();
pending.operation = DRAGGING_NEW_ARC_POINT;
pending.point = hr.entity(3);
pending.description = "click to place point";
break;
}
case MNU_CUBIC:
hr = AddRequest(Request::CUBIC);
SK.GetEntity(hr.entity(1))->PointForceTo(v);
SK.GetEntity(hr.entity(2))->PointForceTo(v);
SK.GetEntity(hr.entity(3))->PointForceTo(v);
SK.GetEntity(hr.entity(4))->PointForceTo(v);
ConstrainPointByHovered(hr.entity(1));
ClearSuper();
pending.operation = DRAGGING_NEW_CUBIC_POINT;
pending.point = hr.entity(4);
pending.description = "click to place next point of cubic";
break;
case MNU_WORKPLANE:
if(LockedInWorkplane()) {
Error("Sketching in a workplane already; sketch in 3d before "
"creating new workplane.");
ClearSuper();
break;
}
hr = AddRequest(Request::WORKPLANE);
SK.GetEntity(hr.entity(1))->PointForceTo(v);
SK.GetEntity(hr.entity(32))->NormalForceTo(
Quaternion::From(SS.GW.projRight, SS.GW.projUp));
ConstrainPointByHovered(hr.entity(1));
ClearSuper();
break;
case MNU_TTF_TEXT: {
if(!SS.GW.LockedInWorkplane()) {
Error("Can't draw text in 3d; select a workplane first.");
ClearSuper();
break;
}
hr = AddRequest(Request::TTF_TEXT);
Request *r = SK.GetRequest(hr);
r->str.strcpy("Abc");
r->font.strcpy("arial.ttf");
SK.GetEntity(hr.entity(1))->PointForceTo(v);
SK.GetEntity(hr.entity(2))->PointForceTo(v);
pending.operation = DRAGGING_NEW_POINT;
pending.point = hr.entity(2);
pending.description = "click to place bottom left of text";
break;
}
case MNU_COMMENT: {
ClearSuper();
Constraint c;
ZERO(&c);
c.group = SS.GW.activeGroup;
c.workplane = SS.GW.ActiveWorkplane();
c.type = Constraint::COMMENT;
c.disp.offset = v;
c.comment.strcpy("NEW COMMENT -- DOUBLE-CLICK TO EDIT");
Constraint::AddConstraint(&c);
break;
}
case DRAGGING_RADIUS:
case DRAGGING_NEW_POINT:
// The MouseMoved event has already dragged it as desired.
ClearPending();
break;
case DRAGGING_NEW_ARC_POINT:
case DRAGGING_NEW_CUBIC_POINT:
ConstrainPointByHovered(pending.point);
ClearPending();
break;
case DRAGGING_NEW_LINE_POINT: {
if(ConstrainPointByHovered(pending.point)) {
ClearPending();
break;
}
// Create a new line segment, so that we continue drawing.
hRequest hr = AddRequest(Request::LINE_SEGMENT);
SK.GetEntity(hr.entity(1))->PointForceTo(v);
SK.GetEntity(hr.entity(2))->PointForceTo(v);
// Constrain the line segments to share an endpoint
Constraint::ConstrainCoincident(pending.point, hr.entity(1));
// And drag an endpoint of the new line segment
pending.operation = DRAGGING_NEW_LINE_POINT;
pending.point = hr.entity(2);
pending.description = "click to place next point of next line";
break;
}
case 0:
default:
ClearPending();
ToggleSelectionStateOfHovered();
break;
}
SS.later.showTW = true;
InvalidateGraphics();
}
void GraphicsWindow::MouseLeftUp(double mx, double my) {
switch(pending.operation) {
case DRAGGING_POINT:
case DRAGGING_CONSTRAINT:
case DRAGGING_NORMAL:
case DRAGGING_RADIUS:
ClearPending();
break;
default:
break; // do nothing
}
}
void GraphicsWindow::MouseLeftDoubleClick(double mx, double my) {
if(GraphicsEditControlIsVisible()) return;
HideTextEditControl();
if(hover.constraint.v) {
constraintBeingEdited = hover.constraint;
ClearSuper();
Constraint *c = SK.GetConstraint(constraintBeingEdited);
if(c->reference) {
// Not meaningful to edit a reference dimension
return;
}
Vector p3 = c->GetLabelPos();
Point2d p2 = ProjectPoint(p3);
char s[1024];
switch(c->type) {
case Constraint::COMMENT:
strcpy(s, c->comment.str);
break;
case Constraint::ANGLE:
case Constraint::LENGTH_RATIO:
sprintf(s, "%.3f", c->valA);
break;
default:
strcpy(s, SS.MmToString(fabs(c->valA)));
break;
}
ShowGraphicsEditControl((int)p2.x, (int)p2.y-4, s);
}
}
void GraphicsWindow::EditControlDone(char *s) {
HideGraphicsEditControl();
Constraint *c = SK.GetConstraint(constraintBeingEdited);
if(c->type == Constraint::COMMENT) {
SS.UndoRemember();
c->comment.strcpy(s);
return;
}
Expr *e = Expr::From(s);
if(e) {
SS.UndoRemember();
switch(c->type) {
case Constraint::PT_LINE_DISTANCE:
case Constraint::PT_FACE_DISTANCE:
case Constraint::PT_PLANE_DISTANCE: {
// The sign is not displayed to the user, but this is a signed
// distance internally. To flip the sign, the user enters a
// negative distance.
bool wasNeg = (c->valA < 0);
if(wasNeg) {
c->valA = -SS.ExprToMm(e);
} else {
c->valA = SS.ExprToMm(e);
}
break;
}
case Constraint::ANGLE:
case Constraint::LENGTH_RATIO:
// These don't get the units conversion for distance, and
// they're always positive
c->valA = fabs(e->Eval());
break;
default:
// These are always positive, and they get the units conversion.
c->valA = fabs(SS.ExprToMm(e));
break;
}
SS.MarkGroupDirty(c->group);
SS.GenerateAll();
} else {
Error("Not a valid number or expression: '%s'", s);
}
}
bool GraphicsWindow::KeyDown(int c) {
if(c == ('h' - 'a') + 1) {
// Treat backspace identically to escape.
MenuEdit(MNU_UNSELECT_ALL);
return true;
}
return false;
}
void GraphicsWindow::MouseScroll(double x, double y, int delta) {
double offsetRight = offset.Dot(projRight);
double offsetUp = offset.Dot(projUp);
double righti = x/scale - offsetRight;
double upi = y/scale - offsetUp;
if(delta > 0) {
scale *= 1.2;
} else {
scale /= 1.2;
}
double rightf = x/scale - offsetRight;
double upf = y/scale - offsetUp;
offset = offset.Plus(projRight.ScaledBy(rightf - righti));
offset = offset.Plus(projUp.ScaledBy(upf - upi));
InvalidateGraphics();
}
void GraphicsWindow::MouseLeave(void) {
// Un-hover everything when the mouse leaves our window, unless there's
// currently a context menu shown.
if(!context.active) {
hover.Clear();
toolbarTooltipped = 0;
toolbarHovered = 0;
PaintGraphics();
}
}
bool GraphicsWindow::Selection::Equals(Selection *b) {
if(entity.v != b->entity.v) return false;
if(constraint.v != b->constraint.v) return false;
return true;
}
bool GraphicsWindow::Selection::IsEmpty(void) {
if(entity.v) return false;
if(constraint.v) return false;
return true;
}
bool GraphicsWindow::Selection::IsStylable(void) {
if(entity.v) return true;
if(constraint.v) {
Constraint *c = SK.GetConstraint(constraint);
if(c->type == Constraint::COMMENT) return true;
}
return false;
}
void GraphicsWindow::Selection::Clear(void) {
entity.v = constraint.v = 0;
emphasized = false;
}
void GraphicsWindow::Selection::Draw(void) {
Vector refp;
if(entity.v) {
Entity *e = SK.GetEntity(entity);
e->Draw();
if(emphasized) refp = e->GetReferencePos();
}
if(constraint.v) {
Constraint *c = SK.GetConstraint(constraint);
c->Draw();
if(emphasized) refp = c->GetReferencePos();
}
if(emphasized && (constraint.v || entity.v)) {
// We want to emphasize this constraint or entity, by drawing a thick
// line from the top left corner of the screen to the reference point
// of that entity or constraint.
double s = 0.501/SS.GW.scale;
Vector topLeft = SS.GW.projRight.ScaledBy(-SS.GW.width*s);
topLeft = topLeft.Plus(SS.GW.projUp.ScaledBy(SS.GW.height*s));
topLeft = topLeft.Minus(SS.GW.offset);
glLineWidth(40);
DWORD rgb = Style::Color(Style::HOVERED);
glColor4d(REDf(rgb), GREENf(rgb), BLUEf(rgb), 0.2);
glBegin(GL_LINES);
glxVertex3v(topLeft);
glxVertex3v(refp);
glEnd();
glLineWidth(1);
}
}
void GraphicsWindow::ClearSelection(void) {
for(int i = 0; i < MAX_SELECTED; i++) {
selection[i].Clear();
}
SS.later.showTW = true;
InvalidateGraphics();
}
void GraphicsWindow::ClearNonexistentSelectionItems(void) {
bool change = false;
for(int i = 0; i < MAX_SELECTED; i++) {
Selection *s = &(selection[i]);
if(s->constraint.v && !(SK.constraint.FindByIdNoOops(s->constraint))) {
s->constraint.v = 0;
change = true;
}
if(s->entity.v && !(SK.entity.FindByIdNoOops(s->entity))) {
s->entity.v = 0;
change = true;
}
}
if(change) InvalidateGraphics();
}
//-----------------------------------------------------------------------------
// Toggle the selection state of the hovered item: if it was selected then
// un-select it, and if it wasn't then select it.
//-----------------------------------------------------------------------------
void GraphicsWindow::ToggleSelectionStateOfHovered(void) {
if(hover.IsEmpty()) return;
// If an item was selected, then we just un-select it.
int i;
for(i = 0; i < MAX_SELECTED; i++) {
if(selection[i].Equals(&hover)) {
selection[i].Clear();
break;
}
}
if(i != MAX_SELECTED) return;
// So it's not selected, so we should select it.
if(hover.entity.v != 0 && SK.GetEntity(hover.entity)->IsFace()) {
// In the interest of speed for the triangle drawing code,
// only two faces may be selected at a time.
int c = 0;
for(i = 0; i < MAX_SELECTED; i++) {
hEntity he = selection[i].entity;
if(he.v != 0 && SK.GetEntity(he)->IsFace()) {
c++;
if(c >= 2) selection[i].Clear();
}
}
}
for(i = 0; i < MAX_SELECTED; i++) {
if(selection[i].IsEmpty()) {
selection[i] = hover;
break;
}
}
}
//-----------------------------------------------------------------------------
// Sort the selection according to various critieria: the entities and
// constraints separately, counts of certain types of entities (circles,
// lines, etc.), and so on.
//-----------------------------------------------------------------------------
void GraphicsWindow::GroupSelection(void) {
memset(&gs, 0, sizeof(gs));
int i;
for(i = 0; i < MAX_SELECTED; i++) {
Selection *s = &(selection[i]);
if(s->entity.v) {
(gs.n)++;
Entity *e = SK.entity.FindById(s->entity);
// A list of points, and a list of all entities that aren't points.
if(e->IsPoint()) {
gs.point[(gs.points)++] = s->entity;
} else {
gs.entity[(gs.entities)++] = s->entity;
(gs.stylables)++;
}
// And an auxiliary list of normals, including normals from
// workplanes.
if(e->IsNormal()) {
gs.anyNormal[(gs.anyNormals)++] = s->entity;
} else if(e->IsWorkplane()) {
gs.anyNormal[(gs.anyNormals)++] = e->Normal()->h;
}
// And of vectors (i.e., stuff with a direction to constrain)
if(e->HasVector()) {
gs.vector[(gs.vectors)++] = s->entity;
}
// Faces (which are special, associated/drawn with triangles)
if(e->IsFace()) {
gs.face[(gs.faces)++] = s->entity;
}
// And some aux counts too
switch(e->type) {
case Entity::WORKPLANE: (gs.workplanes)++; break;
case Entity::LINE_SEGMENT: (gs.lineSegments)++; break;
case Entity::CUBIC: (gs.cubics)++; break;
case Entity::ARC_OF_CIRCLE:
(gs.circlesOrArcs)++;
(gs.arcs)++;
break;
case Entity::CIRCLE: (gs.circlesOrArcs)++; break;
}
}
if(s->constraint.v) {
gs.constraint[(gs.constraints)++] = s->constraint;
Constraint *c = SK.GetConstraint(s->constraint);
if(c->type == Constraint::COMMENT) {
(gs.stylables)++;
(gs.comments)++;
}
}
}
}
void GraphicsWindow::HitTestMakeSelection(Point2d mp) {
int i;
double d, dmin = 1e12;
Selection s;
ZERO(&s);
// Always do the entities; we might be dragging something that should
// be auto-constrained, and we need the hover for that.
for(i = 0; i < SK.entity.n; i++) {
Entity *e = &(SK.entity.elem[i]);
// Don't hover whatever's being dragged.
if(e->h.request().v == pending.point.request().v) continue;
d = e->GetDistance(mp);
if(d < 10 && d < dmin) {
memset(&s, 0, sizeof(s));
s.entity = e->h;
dmin = d;
}
}
// The constraints and faces happen only when nothing's in progress.
if(pending.operation == 0) {
// Constraints
for(i = 0; i < SK.constraint.n; i++) {
d = SK.constraint.elem[i].GetDistance(mp);
if(d < 10 && d < dmin) {
memset(&s, 0, sizeof(s));
s.constraint = SK.constraint.elem[i].h;
dmin = d;
}
}
// Faces, from the triangle mesh; these are lowest priority
if(s.constraint.v == 0 && s.entity.v == 0 && showShaded && showFaces) {
SMesh *m = &((SK.GetGroup(activeGroup))->displayMesh);
DWORD v = m->FirstIntersectionWith(mp);
if(v) {
s.entity.v = v;
}
}
}
if(!s.Equals(&hover)) {
hover = s;
InvalidateGraphics();
}
}
Vector GraphicsWindow::VectorFromProjs(Vector rightUpForward) {
Vector n = projRight.Cross(projUp);
Vector r = (projRight.ScaledBy(rightUpForward.x));
r = r.Plus(projUp.ScaledBy(rightUpForward.y));
r = r.Plus(n.ScaledBy(rightUpForward.z));
return r;
}
void GraphicsWindow::Paint(int w, int h) {
int i;
havePainted = true;
width = w; height = h;
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glScaled(scale*2.0/w, scale*2.0/h, scale*1.0/30000);
double mat[16];
// Last thing before display is to apply the perspective
double clp = SS.CameraTangent()*scale;
MakeMatrix(mat, 1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
0, 0, clp, 1);
glMultMatrixd(mat);
// Before that, we apply the rotation
Vector n = projUp.Cross(projRight);
MakeMatrix(mat, projRight.x, projRight.y, projRight.z, 0,
projUp.x, projUp.y, projUp.z, 0,
n.x, n.y, n.z, 0,
0, 0, 0, 1);
glMultMatrixd(mat);
// And before that, the translation
MakeMatrix(mat, 1, 0, 0, offset.x,
0, 1, 0, offset.y,
0, 0, 1, offset.z,
0, 0, 0, 1);
glMultMatrixd(mat);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glShadeModel(GL_SMOOTH);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
// don't enable GL_POLYGON_SMOOTH; that looks ugly on some graphics cards,
// drawn with leaks in the mesh
glEnable(GL_POLYGON_OFFSET_LINE);
glEnable(GL_POLYGON_OFFSET_FILL);
glEnable(GL_DEPTH_TEST);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glEnable(GL_NORMALIZE);
// At the same depth, we want later lines drawn over earlier.
glDepthFunc(GL_LEQUAL);
if(SS.AllGroupsOkay()) {
glClearColor(REDf(SS.backgroundColor),
GREENf(SS.backgroundColor),
BLUEf(SS.backgroundColor), 1.0f);
} else {
// Draw a different background whenever we're having solve problems.
DWORD rgb = Style::Color(Style::DRAW_ERROR);
glClearColor(0.4f*REDf(rgb), 0.4f*GREENf(rgb), 0.4f*BLUEf(rgb), 1.0f);
// And show the text window, which has info to debug it
ForceTextWindowShown();
}
glClearDepth(1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Nasty case when we're reloading the imported files; could be that
// we get an error, so a dialog pops up, and a message loop starts, and
// we have to get called to paint ourselves. If the sketch is screwed
// up, then we could trigger an oops trying to draw.
if(!SS.allConsistent) return;
// Let's use two lights, at the user-specified locations
GLfloat f;
glEnable(GL_LIGHT0);
f = (GLfloat)SS.lightIntensity[0];
GLfloat li0[] = { f, f, f, 1.0f };
glLightfv(GL_LIGHT0, GL_DIFFUSE, li0);
glLightfv(GL_LIGHT0, GL_SPECULAR, li0);
glEnable(GL_LIGHT1);
f = (GLfloat)SS.lightIntensity[1];
GLfloat li1[] = { f, f, f, 1.0f };
glLightfv(GL_LIGHT1, GL_DIFFUSE, li1);
glLightfv(GL_LIGHT1, GL_SPECULAR, li1);
Vector ld;
ld = VectorFromProjs(SS.lightDir[0]);
GLfloat ld0[4] = { (GLfloat)ld.x, (GLfloat)ld.y, (GLfloat)ld.z, 0 };
glLightfv(GL_LIGHT0, GL_POSITION, ld0);
ld = VectorFromProjs(SS.lightDir[1]);
GLfloat ld1[4] = { (GLfloat)ld.x, (GLfloat)ld.y, (GLfloat)ld.z, 0 };
glLightfv(GL_LIGHT1, GL_POSITION, ld1);
if(SS.drawBackFaces) {
// For debugging, draw the backs of the triangles in red, so that we
// notice when a shell is open
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 1);
} else {
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 0);
}
GLfloat ambient[4] = { (float)SS.ambientIntensity,
(float)SS.ambientIntensity,
(float)SS.ambientIntensity, 1 };
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
glxUnlockColor();
if(showSnapGrid && LockedInWorkplane()) {
hEntity he = ActiveWorkplane();
EntityBase *wrkpl = SK.GetEntity(he),
*norm = wrkpl->Normal();
Vector wu, wv, wn, wp;
wp = SK.GetEntity(wrkpl->point[0])->PointGetNum();
wu = norm->NormalU();
wv = norm->NormalV();
wn = norm->NormalN();
double g = SS.gridSpacing;
double umin = VERY_POSITIVE, umax = VERY_NEGATIVE,
vmin = VERY_POSITIVE, vmax = VERY_NEGATIVE;
int a;
for(a = 0; a < 4; a++) {
// Ideally, we would just do +/- half the width and height; but
// allow some extra slop for rounding.
Vector horiz = projRight.ScaledBy((0.6*width)/scale + 2*g),
vert = projUp. ScaledBy((0.6*height)/scale + 2*g);
if(a == 2 || a == 3) horiz = horiz.ScaledBy(-1);
if(a == 1 || a == 3) vert = vert. ScaledBy(-1);
Vector tp = horiz.Plus(vert).Minus(offset);
// Project the point into our grid plane, normal to the screen
// (not to the grid plane). If the plane is on edge then this is
// impossible so don't try to draw the grid.
bool parallel;
Vector tpp = Vector::AtIntersectionOfPlaneAndLine(
wn, wn.Dot(wp),
tp, tp.Plus(n),
&parallel);
if(parallel) goto nogrid;
tpp = tpp.Minus(wp);
double uu = tpp.Dot(wu),
vv = tpp.Dot(wv);
umin = min(uu, umin);
umax = max(uu, umax);
vmin = min(vv, vmin);
vmax = max(vv, vmax);
}
int i, j, i0, i1, j0, j1;
i0 = (int)(umin / g);
i1 = (int)(umax / g);
j0 = (int)(vmin / g);
j1 = (int)(vmax / g);
if(i0 > i1 || i1 - i0 > 400) goto nogrid;
if(j0 > j1 || j1 - j0 > 400) goto nogrid;
glLineWidth(1);
glxColorRGBa(Style::Color(Style::DATUM), 0.3);
glBegin(GL_LINES);
for(i = i0 + 1; i < i1; i++) {
glxVertex3v(wp.Plus(wu.ScaledBy(i*g)).Plus(wv.ScaledBy(j0*g)));
glxVertex3v(wp.Plus(wu.ScaledBy(i*g)).Plus(wv.ScaledBy(j1*g)));
}
for(j = j0 + 1; j < j1; j++) {
glxVertex3v(wp.Plus(wu.ScaledBy(i0*g)).Plus(wv.ScaledBy(j*g)));
glxVertex3v(wp.Plus(wu.ScaledBy(i1*g)).Plus(wv.ScaledBy(j*g)));
}
glEnd();
// Clear the depth buffer, so that the grid is at the very back of
// the Z order.
glClear(GL_DEPTH_BUFFER_BIT);
nogrid:;
}
// Draw the active group; this fills the polygons in a drawing group, and
// draws the solid mesh.
(SK.GetGroup(activeGroup))->Draw();
// Now draw the entities
if(showHdnLines) glDisable(GL_DEPTH_TEST);
Entity::DrawAll();
glDisable(GL_DEPTH_TEST);
// Draw the constraints
for(i = 0; i < SK.constraint.n; i++) {
SK.constraint.elem[i].Draw();
}
// Draw the traced path, if one exists
glLineWidth(Style::Width(Style::ANALYZE));
glxColorRGB(Style::Color(Style::ANALYZE));
SContour *sc = &(SS.traced.path);
glBegin(GL_LINE_STRIP);
for(i = 0; i < sc->l.n; i++) {
glxVertex3v(sc->l.elem[i].p);
}
glEnd();
// And the naked edges, if the user did Analyze -> Show Naked Edges.
glLineWidth(Style::Width(Style::DRAW_ERROR));
glxColorRGB(Style::Color(Style::DRAW_ERROR));
glxDrawEdges(&(SS.nakedEdges), true);
// Then redraw whatever the mouse is hovering over, highlighted.
glDisable(GL_DEPTH_TEST);
glxLockColorTo(Style::Color(Style::HOVERED));
hover.Draw();
// And finally draw the selection, same mechanism.
glxLockColorTo(Style::Color(Style::SELECTED));
for(i = 0; i < MAX_SELECTED; i++) {
selection[i].Draw();
}
glxUnlockColor();
// And finally the toolbar.
if(SS.showToolbar) {
ToolbarDraw();
}
}
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