package com.jme3.scene.plugins.blender.constraints.definitions;
import com.jme3.math.Transform;
import com.jme3.math.Vector3f;
import com.jme3.scene.plugins.blender.BlenderContext;
import com.jme3.scene.plugins.blender.constraints.ConstraintHelper.Space;
import com.jme3.scene.plugins.blender.file.Structure;
/**
* This class represents 'Size limit' constraint type in blender.
*
* @author Marcin Roguski (Kaelthas)
*/
/* package */class ConstraintDefinitionSizeLimit extends ConstraintDefinition {
private static final int LIMIT_XMIN = 0x01;
private static final int LIMIT_XMAX = 0x02;
private static final int LIMIT_YMIN = 0x04;
private static final int LIMIT_YMAX = 0x08;
private static final int LIMIT_ZMIN = 0x10;
private static final int LIMIT_ZMAX = 0x20;
protected transient float[][] limits = new float[3][2];
public ConstraintDefinitionSizeLimit(Structure constraintData, Long ownerOMA, BlenderContext blenderContext) {
super(constraintData, ownerOMA, blenderContext);
if (blenderContext.getBlenderKey().isFixUpAxis()) {
limits[0][0] = ((Number) constraintData.getFieldValue("xmin")).floatValue();
limits[0][1] = ((Number) constraintData.getFieldValue("xmax")).floatValue();
limits[2][0] = -((Number) constraintData.getFieldValue("ymin")).floatValue();
limits[2][1] = -((Number) constraintData.getFieldValue("ymax")).floatValue();
limits[1][0] = ((Number) constraintData.getFieldValue("zmin")).floatValue();
limits[1][1] = ((Number) constraintData.getFieldValue("zmax")).floatValue();
// swapping Y and X limits flag in the bitwise flag
int ymin = flag & LIMIT_YMIN;
int ymax = flag & LIMIT_YMAX;
int zmin = flag & LIMIT_ZMIN;
int zmax = flag & LIMIT_ZMAX;
flag &= LIMIT_XMIN | LIMIT_XMAX;// clear the other flags to swap
// them
flag |= ymin << 2;
flag |= ymax << 2;
flag |= zmin >> 2;
flag |= zmax >> 2;
} else {
limits[0][0] = ((Number) constraintData.getFieldValue("xmin")).floatValue();
limits[0][1] = ((Number) constraintData.getFieldValue("xmax")).floatValue();
limits[1][0] = ((Number) constraintData.getFieldValue("ymin")).floatValue();
limits[1][1] = ((Number) constraintData.getFieldValue("ymax")).floatValue();
limits[2][0] = ((Number) constraintData.getFieldValue("zmin")).floatValue();
limits[2][1] = ((Number) constraintData.getFieldValue("zmax")).floatValue();
}
trackToBeChanged = (flag & (LIMIT_XMIN | LIMIT_XMAX | LIMIT_YMIN | LIMIT_YMAX | LIMIT_ZMIN | LIMIT_ZMAX)) != 0;
}
@Override
public void bake(Space ownerSpace, Space targetSpace, Transform targetTransform, float influence) {
if (influence == 0 || !trackToBeChanged) {
return;
}
Transform ownerTransform = this.getOwnerTransform(ownerSpace);
Vector3f scale = ownerTransform.getScale();
if ((flag & LIMIT_XMIN) != 0 && scale.x < limits[0][0]) {
scale.x -= (scale.x - limits[0][0]) * influence;
}
if ((flag & LIMIT_XMAX) != 0 && scale.x > limits[0][1]) {
scale.x -= (scale.x - limits[0][1]) * influence;
}
if ((flag & LIMIT_YMIN) != 0 && scale.y < limits[1][0]) {
scale.y -= (scale.y - limits[1][0]) * influence;
}
if ((flag & LIMIT_YMAX) != 0 && scale.y > limits[1][1]) {
scale.y -= (scale.y - limits[1][1]) * influence;
}
if ((flag & LIMIT_ZMIN) != 0 && scale.z < limits[2][0]) {
scale.z -= (scale.z - limits[2][0]) * influence;
}
if ((flag & LIMIT_ZMAX) != 0 && scale.z > limits[2][1]) {
scale.z -= (scale.z - limits[2][1]) * influence;
}
this.applyOwnerTransform(ownerTransform, ownerSpace);
}
@Override
public String getConstraintTypeName() {
return "Limit scale";
}
@Override
public boolean isTargetRequired() {
return false;
}
}