Beleuchtung hinzugefügt

1 files changed, 18 insertions, 1 deletions

diff --git a/Triangle.h b/Triangle.h
index 807b5b9..3ce5845 100644
--- a/Triangle.h
+++ b/Triangle.h
@@ -20,9 +20,26 @@ class Triangle
     const Vertex& getVertex(int i) const {return v[i];}
     const Color& getColor() const {return c;}
     
+    Vertex getNormal() const {
+      Vector v1 = v[0]-v[2];
+      Vector v2 = v[0]-v[1];
+
+      return v1.cross(v2).normalize();
+    }
+
     void render() const {
-      glColor4f(c.getR(), c.getG(), c.getB(), c.getA());
+      //glColor4f(c.getR(), c.getG(), c.getB(), c.getA());
+      float color[] = {c.getR(), c.getG(), c.getB(), c.getA()};
+      glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, color);
+
+      for(int i = 0; i < 3; ++i) {
+        color[i] /= 2;
+      }
+      glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, color);
       
+      Vector normal = getNormal();
+      glNormal3f(normal.getX(), normal.getY(), normal.getZ());
+
       for(int i = 0; i < 3; ++i)
       {
         glVertex3f(v[i].getX(), v[i].getY(), v[i].getZ());