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53 lines (44 loc) · 1.16 KB
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Copy pathQuad.java
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53 lines (44 loc) · 1.16 KB
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package ptjava;
public class Quad implements IShape {
Vector v0, v1, v2, v3;
Material material;
Triangle t1, t2;
public Quad(Vector v0, Vector v1, Vector v2, Vector v3, Material material) {
this.v0 = v0;
this.v1 = v1;
this.v2 = v2;
this.v3 = v3;
this.material = material;
this.t1 = new Triangle(v0, v1, v2, material);
this.t2 = new Triangle(v0, v2, v3, material);
}
@Override
public void Compile() {
}
@Override
public Box BoundingBox() {
Vector min = v0.Min(v1).Min(v2).Min(v3);
Vector max = v0.Max(v1).Max(v2).Max(v3);
return new Box(min, max);
}
@Override
public Vector UV(Vector p) {
return p;
}
@Override
public Material MaterialAt(Vector p) {
return this.material;
}
@Override
public Vector NormalAt(Vector p) {
Vector edge1 = v1.Sub(v0);
Vector edge2 = v2.Sub(v0);
return edge1.Cross(edge2).Normalize();
}
@Override
public Hit Intersect(Ray ray) {
Hit hit1 = t1.Intersect(ray);
if (hit1.Ok()) return hit1;
return t2.Intersect(ray);
}
}