1 package com.jme3.scene.plugins.blender.constraints; 2 3 import com.jme3.animation.Animation; 4 import com.jme3.math.Transform; 5 import com.jme3.math.Vector3f; 6 import com.jme3.scene.Spatial; 7 import com.jme3.scene.plugins.blender.BlenderContext; 8 import com.jme3.scene.plugins.blender.animations.Ipo; 9 import com.jme3.scene.plugins.blender.exceptions.BlenderFileException; 10 import com.jme3.scene.plugins.blender.file.Structure; 11 import com.jme3.scene.plugins.ogre.AnimData; 12 13 /** 14 * This class represents 'Loc limit' constraint type in blender. 15 * @author Marcin Roguski (Kaelthas) 16 */ 17 /*package*/ class ConstraintLocLimit extends Constraint { 18 private static final int LIMIT_XMIN = 0x01; 19 private static final int LIMIT_XMAX = 0x02; 20 private static final int LIMIT_YMIN = 0x04; 21 private static final int LIMIT_YMAX = 0x08; 22 private static final int LIMIT_ZMIN = 0x10; 23 private static final int LIMIT_ZMAX = 0x20; 24 25 protected float[][] limits = new float[3][2]; 26 protected int flag; 27 28 /** 29 * This constructor creates the constraint instance. 30 * 31 * @param constraintStructure 32 * the constraint's structure (bConstraint clss in blender 2.49). 33 * @param ownerOMA 34 * the old memory address of the constraint owner 35 * @param influenceIpo 36 * the ipo curve of the influence factor 37 * @param blenderContext 38 * the blender context 39 * @throws BlenderFileException 40 * this exception is thrown when the blender file is somehow 41 * corrupted 42 */ ConstraintLocLimit(Structure constraintStructure, Long ownerOMA, Ipo influenceIpo, BlenderContext blenderContext)43 public ConstraintLocLimit(Structure constraintStructure, Long ownerOMA, 44 Ipo influenceIpo, BlenderContext blenderContext) throws BlenderFileException { 45 super(constraintStructure, ownerOMA, influenceIpo, blenderContext); 46 47 flag = ((Number) data.getFieldValue("flag")).intValue(); 48 if(blenderContext.getBlenderKey().isFixUpAxis()) { 49 limits[0][0] = ((Number) data.getFieldValue("xmin")).floatValue(); 50 limits[0][1] = ((Number) data.getFieldValue("xmax")).floatValue(); 51 limits[2][0] = -((Number) data.getFieldValue("ymin")).floatValue(); 52 limits[2][1] = -((Number) data.getFieldValue("ymax")).floatValue(); 53 limits[1][0] = ((Number) data.getFieldValue("zmin")).floatValue(); 54 limits[1][1] = ((Number) data.getFieldValue("zmax")).floatValue(); 55 56 //swapping Y and X limits flag in the bitwise flag 57 int ymin = flag & LIMIT_YMIN; 58 int ymax = flag & LIMIT_YMAX; 59 int zmin = flag & LIMIT_ZMIN; 60 int zmax = flag & LIMIT_ZMAX; 61 flag &= LIMIT_XMIN | LIMIT_XMAX;//clear the other flags to swap them 62 flag |= ymin << 2; 63 flag |= ymax << 2; 64 flag |= zmin >> 2; 65 flag |= zmax >> 2; 66 } else { 67 limits[0][0] = ((Number) data.getFieldValue("xmin")).floatValue(); 68 limits[0][1] = ((Number) data.getFieldValue("xmax")).floatValue(); 69 limits[1][0] = ((Number) data.getFieldValue("ymin")).floatValue(); 70 limits[1][1] = ((Number) data.getFieldValue("ymax")).floatValue(); 71 limits[2][0] = ((Number) data.getFieldValue("zmin")).floatValue(); 72 limits[2][1] = ((Number) data.getFieldValue("zmax")).floatValue(); 73 } 74 } 75 76 @Override bakeConstraint()77 protected void bakeConstraint() { 78 Object owner = this.owner.getObject(); 79 AnimData animData = blenderContext.getAnimData(this.owner.getOma()); 80 if(animData != null) { 81 for(Animation animation : animData.anims) { 82 BlenderTrack track = this.getTrack(owner, animData.skeleton, animation); 83 Vector3f[] translations = track.getTranslations(); 84 int maxFrames = translations.length; 85 for (int frame = 0; frame < maxFrames; ++frame) { 86 this.locLimit(translations[frame], ipo.calculateValue(frame)); 87 } 88 track.setKeyframes(track.getTimes(), translations, track.getRotations(), track.getScales()); 89 } 90 } 91 92 if(owner instanceof Spatial) { 93 Transform ownerTransform = this.owner.getTransform(); 94 Vector3f ownerLocation = ownerTransform.getTranslation(); 95 this.locLimit(ownerLocation, ipo.calculateValue(0)); 96 this.owner.applyTransform(ownerTransform); 97 } 98 } 99 100 /** 101 * This method modifies the given translation. 102 * @param translation the translation to be modified. 103 * @param influence the influence value 104 */ locLimit(Vector3f translation, float influence)105 private void locLimit(Vector3f translation, float influence) { 106 if ((flag & LIMIT_XMIN) != 0) { 107 if (translation.x < limits[0][0]) { 108 translation.x -= (translation.x - limits[0][0]) * influence; 109 } 110 } 111 if ((flag & LIMIT_XMAX) != 0) { 112 if (translation.x > limits[0][1]) { 113 translation.x -= (translation.x - limits[0][1]) * influence; 114 } 115 } 116 if ((flag & LIMIT_YMIN) != 0) { 117 if (translation.y < limits[1][0]) { 118 translation.y -= (translation.y - limits[1][0]) * influence; 119 } 120 } 121 if ((flag & LIMIT_YMAX) != 0) { 122 if (translation.y > limits[1][1]) { 123 translation.y -= (translation.y - limits[1][1]) * influence; 124 } 125 } 126 if ((flag & LIMIT_ZMIN) != 0) { 127 if (translation.z < limits[2][0]) { 128 translation.z -= (translation.z - limits[2][0]) * influence; 129 } 130 } 131 if ((flag & LIMIT_ZMAX) != 0) { 132 if (translation.z > limits[2][1]) { 133 translation.z -= (translation.z - limits[2][1]) * influence; 134 } 135 } 136 } 137 } 138