54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
#include "all_includes.hh"
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// Triangle "rapide", sert juste aux calculs de coordonnées. Devrait
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// être une superclasse de "triangle". Pour calculer le cosinus
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// d'angles, on crée un objet triangle assez gros. C'est du
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// gaspillage.
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Triangle::Triangle(Vertex v1, Vertex v2, Vertex v3): v1(v1), v2(v2), v3(v3) {
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}
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Triangle::Triangle(Vertex v1, Vertex v2, Vertex v3, unsigned char r, unsigned char g, unsigned char b)
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: v1(v1), v2(v2), v3(v3), r(r), g(g), b(b), vnormal(normal(v1,v2,v3)) {
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}
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std::ostream& operator<<(std::ostream& os, const Triangle* t) {
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return os << *t;
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}
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std::ostream& operator<<(std::ostream& os, const Triangle& t) {
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return os << "Triangle " << t.v1 << "--" << t.v2 << "--" << t.v3 << "-- cycle";
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}
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Vertexf Triangle::normal(Vertex v1, Vertex v2, Vertex v3) {
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Vertexf normal = (v1 - v2)*(v2 - v3);
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return normal / normal.norm();
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}
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float Triangle::cosAngle() {
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return (v1-v2).cosAngle(v3-v2);
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}
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float Triangle::angle() {
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return std::acos(cosAngle());
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}
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void Triangle::display() {
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// glDisable(GL_LIGHTING);
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// glDisable(GL_TEXTURE_2D);
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// glBegin(GL_LINES);
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// glColor3ub(255,255,0);
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// Vertex v = (v1 + v2 + v3) / 3;
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// glVertex3d(v.x,v.y,v.z);
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// glVertex3d(v.x+vnormal.x*50,v.y+vnormal.y*50,v.z+vnormal.z*50);
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// glEnd( );
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// glEnable(GL_LIGHTING);
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View::setColor(r,g,b);
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glNormal3d(vnormal.x,vnormal.y,vnormal.z);
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// glBegin(GL_TRIANGLES);
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glVertex3d(v1.x,v1.y,v1.z);
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glVertex3d(v2.x,v2.y,v2.z);
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glVertex3d(v3.x,v3.y,v3.z);
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// glEnd();
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}
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