1 files changed, 92 insertions, 0 deletions
diff --git a/engine/src/blender/com/jme3/scene/plugins/blender/constraints/ConstraintShrinkWrap.java b/engine/src/blender/com/jme3/scene/plugins/blender/constraints/ConstraintShrinkWrap.java
new file mode 100644
index 0000000..7352032
--- /dev/null
+++ b/engine/src/blender/com/jme3/scene/plugins/blender/constraints/ConstraintShrinkWrap.java
@@ -0,0 +1,92 @@
+package com.jme3.scene.plugins.blender.constraints;
+
+import java.nio.FloatBuffer;
+import java.util.ArrayList;
+import java.util.List;
+
+import com.jme3.animation.Animation;
+import com.jme3.math.Quaternion;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Mesh;
+import com.jme3.scene.Node;
+import com.jme3.scene.Spatial;
+import com.jme3.scene.VertexBuffer.Type;
+import com.jme3.scene.plugins.blender.BlenderContext;
+import com.jme3.scene.plugins.blender.animations.Ipo;
+import com.jme3.scene.plugins.blender.exceptions.BlenderFileException;
+import com.jme3.scene.plugins.blender.file.Structure;
+import com.jme3.scene.plugins.ogre.AnimData;
+
+/**
+ * This class represents 'Shrink wrap' constraint type in blender.
+ * @author Marcin Roguski (Kaelthas)
+ */
+/*package*/ class ConstraintShrinkWrap extends Constraint {
+	
+	/**
+	 * This constructor creates the constraint instance.
+	 * 
+	 * @param constraintStructure
+	 *            the constraint's structure (bConstraint clss in blender 2.49).
+	 * @param ownerOMA
+	 *            the old memory address of the constraint owner
+	 * @param influenceIpo
+	 *            the ipo curve of the influence factor
+	 * @param blenderContext
+	 *            the blender context
+	 * @throws BlenderFileException
+	 *             this exception is thrown when the blender file is somehow
+	 *             corrupted
+	 */
+	public ConstraintShrinkWrap(Structure constraintStructure, Long ownerOMA,
+			Ipo influenceIpo, BlenderContext blenderContext) throws BlenderFileException {
+		super(constraintStructure, ownerOMA, influenceIpo, blenderContext);
+	}
+
+	@Override
+	protected void bakeConstraint() {
+		//loading mesh points (blender ensures that the target is a mesh-object)
+		List<Vector3f> pts = new ArrayList<Vector3f>();
+		Node target = (Node) this.target.getObject();
+		for(Spatial spatial : target.getChildren()) {
+			if(spatial instanceof Geometry) {
+				Mesh mesh = ((Geometry) spatial).getMesh();
+				FloatBuffer floatBuffer = mesh.getFloatBuffer(Type.Position);
+				for(int i=0;i<floatBuffer.limit();i+=3) {
+					pts.add(new Vector3f(floatBuffer.get(i), floatBuffer.get(i + 1), floatBuffer.get(i + 2)));
+				}
+			}
+		}
+		
+		AnimData animData = blenderContext.getAnimData(this.owner.getOma());
+		if(animData != null) {
+			Object owner = this.owner.getObject();
+			for(Animation animation : animData.anims) {
+				BlenderTrack track = this.getTrack(owner, animData.skeleton, animation);
+				Vector3f[] translations = track.getTranslations();
+				Quaternion[] rotations = track.getRotations();
+				int maxFrames = translations.length;
+				for (int frame = 0; frame < maxFrames; ++frame) {
+					Vector3f currentTranslation = translations[frame];
+					
+					//looking for minimum distanced point
+					Vector3f minDistancePoint = null;
+					float distance = Float.MAX_VALUE;
+					for(Vector3f p : pts) {
+						float temp = currentTranslation.distance(p);
+						if(temp < distance) {
+							distance = temp;
+							minDistancePoint = p;
+						}
+					}
+					translations[frame] = minDistancePoint.clone();
+				}
+				
+				track.setKeyframes(track.getTimes(), translations, rotations, track.getScales());
+			}
+		}
+		
+		//TODO: static constraint for spatials
+	}
+}