ZModifier.java

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package eu.mihosoft.vrl.v3d;
 
// TODO: Auto-generated Javadoc
public class ZModifier implements WeightFunction {
 
    private Bounds bounds;
    
    private double min = 0;
    
    private double max = 1.0;
 
    private double sPerUnit;
    
    private boolean centered;
 
    public ZModifier() {
    }
 
    public ZModifier(boolean centered) {
        this.centered = centered;
    }
 
    /* (non-Javadoc)
     * @see eu.mihosoft.vrl.v3d.WeightFunction#eval(eu.mihosoft.vrl.v3d.Vector3d, eu.mihosoft.vrl.v3d.CSG)
     */
    @Override
    public double eval(Vector3d pos, CSG csg) {
 
        if (bounds == null) {
            this.bounds = csg.getBounds();
            sPerUnit = (max - min) / (bounds.getMax().z - bounds.getMin().z);
        }
 
        double s = sPerUnit * (pos.z - bounds.getMin().z);
 
        if (centered) {
            s = s - (max - min) / 2.0;
 
            s = Math.abs(s) * 2;
        }
 
        return s;
    }
 
}