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Use normals in glut render

This commit is contained in:
Théophile Bastian 2018-02-13 14:25:08 +01:00
parent d282b93298
commit 8c254dff15
1 changed files with 9 additions and 4 deletions
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13
render/GlutRender.cpp
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@ -78,7 +78,7 @@ void GlutRender::reshape(int wid, int hei) {
gluPerspective(45.0f, aspect, 0.1f, 100.0f);
}
void GlutRender::display_mesh(const Mesh& mesh) const {
void GlutRender::display_mesh(Mesh& mesh) const {
const Point& mesh_center = mesh.get_center();
const std::vector<Point>& points = mesh.get_vertices();
@ -88,10 +88,15 @@ void GlutRender::display_mesh(const Mesh& mesh) const {
Point p0 = face.pt(0, points) + mesh_center,
p1 = face.pt(1, points) + mesh_center,
p2 = face.pt(2, points) + mesh_center;
Point n0 = mesh.get_normal(face[0]),
n1 = mesh.get_normal(face[1]),
n2 = mesh.get_normal(face[2]);
glColor3f(rand_color(), rand_color(), rand_color());
glVertex3f(p0[0], p0[1], p0[2]);
glVertex3f(p1[0], p1[1], p1[2]);
glVertex3f(p2[0], p2[1], p2[2]);
glNormal3f(n0[0], n0[1], n0[2]); glVertex3f(p0[0], p0[1], p0[2]);
glNormal3f(n1[0], n1[1], n1[2]); glVertex3f(p1[0], p1[1], p1[2]);
glNormal3f(n2[0], n2[1], n2[2]); glVertex3f(p2[0], p2[1], p2[2]);
}
glEnd();
}