package demos.xtrans; import gleem.linalg.*; /** A quadrilateral in which the vertices are three-dimensional floating-point values. */ public class Quad3f { private Vec3f[] vecs; public static final int UPPER_LEFT = 0; public static final int LOWER_LEFT = 1; public static final int LOWER_RIGHT = 2; public static final int UPPER_RIGHT = 3; private static final int NUM_VECS = 4; /** Constructs a Quad3f in which all the vertices are set to the origin. */ public Quad3f() { vecs = new Vec3f[NUM_VECS]; for (int i = 0; i < NUM_VECS; i++) { vecs[i] = new Vec3f(); } } /** Constructs a Quad3f in which the vertices are set to the specified values. */ public Quad3f(Vec3f upperLeft, Vec3f lowerLeft, Vec3f lowerRight, Vec3f upperRight) { this(); setVec(0, upperLeft); setVec(1, lowerLeft); setVec(2, lowerRight); setVec(3, upperRight); } /** Sets the specified vertex to the specified value. */ public void setVec(int which, Vec3f val) { vecs[which].set(val); } /** Returns the specified vertex. */ public Vec3f getVec(int which) { return vecs[which]; } /** Sets all four points of this quadrilateral. */ public void set(Quad3f quad) { for (int i = 0; i < NUM_VECS; i++) { setVec(i, quad.getVec(i)); } } /** Returns a newly-constructed Quad2f in which all vertices have been multiplied in scalar fashion by the passed value. */ public Quad3f times(float val) { return new Quad3f(getVec(0).times(val), getVec(1).times(val), getVec(2).times(val), getVec(3).times(val)); } /** Returns a newly-constructed Quad2f in which the vertices are the component-wise sums of this quad and the passed quad. */ public Quad3f plus(Quad3f val) { return new Quad3f(getVec(0).plus(val.getVec(0)), getVec(1).plus(val.getVec(1)), getVec(2).plus(val.getVec(2)), getVec(3).plus(val.getVec(3))); } }