Camera4dOrthographic.java

/**
 * 
 */
package ddddbb.math;


public abstract class Camera4dOrthographic extends Camera4dParallel {
	protected Camera4dOrthographic(Point4d initialEye, Point4d[] initialV) {
		//though we dont need it - as we override the using methods - 
		//this would be the value as particular case of the AParallelProjection 
		super(initialEye, initialV, new Point4d(0,0,0,1));
	}
	
	@Override
	public boolean nproj3d(Point4d p4,Point3d res3) {
		Point4d pd = p4.clone();
		pd.subtract(eye);
		res3.x[0] = v[0].sc(pd);
		res3.x[1] = v[1].sc(pd);
		res3.x[2] = v[2].sc(pd);
		//if (pd.sc(viewingDirection()) < Param.ERR) return false;
		return true;
	}		
	
	@Override
	public Point4d viewingDirection() {
		assert v[3].isNormal();
//		if (orientation ==1) {
			return (Point4d)v[3];
//		}
//		Point4d vd = v[3].clone();
//		vd.multiply(orientation);
//		return vd;
	}
	
	@Override
	public void rotate(double ph,Point a, Point b, Point c) {
		for (int i=0;i<4;i++) {
			v[i].rotate(ph, a,b);
		}
		eye.rotate(ph,a,b,c);
		AOP.orthoNormalize(v); //avoid those tiny drifts
		changed();
	}
	
	public static class Dimetric extends Camera4dOrthographic {
		private static final Point4d ie = defaultInitialEye();
		public Dimetric() {
			super(ie,initialV(new Point4d(-1,-1,-1,3.0),ie));
		}
		public String toString() {
			return "Dimetric (orthographic)";
		}
	}
	
}