57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
#include "solvespace.h"
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void Entity::LineDrawHitTest(Vector a, Vector b) {
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glBegin(GL_LINE_STRIP);
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glxVertex3v(a);
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glxVertex3v(b);
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glEnd();
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}
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void Entity::Draw(void) {
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switch(type) {
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case CSYS_2D: {
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if(!SS.GW.show2dCsyss) break;
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Vector p;
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double a, b, c, d;
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SS.point.FindById(point(16))->GetInto(&p);
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a = SS.param.FindById(param(0))->val;
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b = SS.param.FindById(param(1))->val;
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c = SS.param.FindById(param(2))->val;
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d = SS.param.FindById(param(3))->val;
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Vector u = Vector::RotationU(a, b, c, d);
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Vector v = Vector::RotationV(a, b, c, d);
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double s = (min(SS.GW.width, SS.GW.height))*0.4;
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Vector pp = (p.Plus(u)).Plus(v);
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Vector pm = (p.Plus(u)).Minus(v);
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Vector mm = (p.Minus(u)).Minus(v);
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Vector mp = (p.Minus(u)).Plus(v);
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pp = pp.ScaledBy(s);
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pm = pm.ScaledBy(s);
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mm = mm.ScaledBy(s);
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mp = mp.ScaledBy(s);
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LineDrawHitTest(pp, pm);
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LineDrawHitTest(pm, mm);
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LineDrawHitTest(mm, mp);
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LineDrawHitTest(mp, pp);
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Request *r = SS.request.FindById(this->request());
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glPushMatrix();
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glxTranslatev(mm);
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glxOntoCsys(u, v);
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glxWriteText(r->name.str);
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glPopMatrix();
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glEnd();
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break;
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}
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default:
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oops();
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}
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}
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