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Implementation of shrinkwrap constraint (+ several bugfixes and updated test asset file).

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git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@7686 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
3.0
Kae..pl 14 years ago
parent fef0820ca6
commit 4a9f7ab979
3 changed files with 69 additions and 10 deletions
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  1. 57
      engine/src/blender/com/jme3/scene/plugins/blender/helpers/v249/ConstraintHelper.java
  2. 22
      engine/src/blender/com/jme3/scene/plugins/blender/structures/AbstractInfluenceFunction.java
  3. BIN
      engine/src/test-data/Blender/2.4x/constraints.blend

57
engine/src/blender/com/jme3/scene/plugins/blender/helpers/v249/ConstraintHelper.java
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@ -1,9 +1,11 @@
package com.jme3.scene.plugins.blender.helpers.v249;
import java.nio.FloatBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import com.jme3.animation.Bone;
import com.jme3.animation.BoneAnimation;
@ -12,8 +14,11 @@ import com.jme3.animation.Skeleton;
import com.jme3.math.FastMath;
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.data.Structure;
import com.jme3.scene.plugins.blender.exception.BlenderFileException;
import com.jme3.scene.plugins.blender.structures.AbstractInfluenceFunction;
@ -23,8 +28,8 @@ import com.jme3.scene.plugins.blender.structures.ConstraintType;
import com.jme3.scene.plugins.blender.structures.Ipo;
import com.jme3.scene.plugins.blender.utils.AbstractBlenderHelper;
import com.jme3.scene.plugins.blender.utils.DataRepository;
import com.jme3.scene.plugins.blender.utils.DataRepository.LoadedFeatureDataType;
import com.jme3.scene.plugins.blender.utils.Pointer;
import java.util.logging.Level;
/**
* This class should be used for constraint calculations.
@ -404,7 +409,6 @@ public class ConstraintHelper extends AbstractBlenderHelper {
//ROTLIMIT constraint
influenceFunctions[ConstraintType.CONSTRAINT_TYPE_ROTLIMIT.getConstraintId()] = new AbstractInfluenceFunction(ConstraintType.CONSTRAINT_TYPE_ROTLIMIT, dataRepository) {
@Override
public void affectAnimation(Skeleton skeleton, BoneAnimation boneAnimation, Constraint constraint) {
Structure constraintStructure = constraint.getData();
@ -459,11 +463,57 @@ public class ConstraintHelper extends AbstractBlenderHelper {
//SHRINKWRAP constraint (TODO: to implement)
influenceFunctions[ConstraintType.CONSTRAINT_TYPE_SHRINKWRAP.getConstraintId()] = new AbstractInfluenceFunction(ConstraintType.CONSTRAINT_TYPE_SHRINKWRAP, dataRepository) {
@Override
public void affectAnimation(Skeleton skeleton, BoneAnimation boneAnimation, Constraint constraint) {
Structure constraintStructure = constraint.getData();
this.validateConstraintType(constraintStructure);
//loading mesh points (blender ensures that the target is a mesh-object)
List<Vector3f> pts = new ArrayList<Vector3f>();
try {
Node node = (Node)this.getTarget(constraint, LoadedFeatureDataType.LOADED_FEATURE);
for(Spatial spatial : node.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)));
}
}
}
//modifying traces
BoneTrack boneTrack = this.getBoneTrack(skeleton, boneAnimation, constraint);
if (boneTrack != null) {
Vector3f[] translations = boneTrack.getTranslations();
Quaternion[] rotations = boneTrack.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();
}
boneTrack.setKeyframes(boneTrack.getTimes(), translations, rotations, boneTrack.getScales());
}
} catch (BlenderFileException e) {
LOGGER.severe(e.getLocalizedMessage());
}
}
};
//SIZELIKE constraint
influenceFunctions[ConstraintType.CONSTRAINT_TYPE_SIZELIKE.getConstraintId()] = new AbstractInfluenceFunction(ConstraintType.CONSTRAINT_TYPE_SIZELIKE, dataRepository) {
@Override
public void affectAnimation(Skeleton skeleton, BoneAnimation boneAnimation, Constraint constraint) {
Structure constraintData = constraint.getData();
@ -497,7 +547,6 @@ public class ConstraintHelper extends AbstractBlenderHelper {
//SIZELIMIT constraint
influenceFunctions[ConstraintType.CONSTRAINT_TYPE_SIZELIMIT.getConstraintId()] = new AbstractInfluenceFunction(ConstraintType.CONSTRAINT_TYPE_SIZELIMIT, dataRepository) {
@Override
public void affectAnimation(Skeleton skeleton, BoneAnimation boneAnimation, Constraint constraint) {
Structure constraintStructure = constraint.getData();

22
engine/src/blender/com/jme3/scene/plugins/blender/structures/AbstractInfluenceFunction.java
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@ -10,6 +10,8 @@ import com.jme3.math.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.scene.Node;
import com.jme3.scene.plugins.blender.data.Structure;
import com.jme3.scene.plugins.blender.exception.BlenderFileException;
import com.jme3.scene.plugins.blender.helpers.v249.ObjectHelper;
import com.jme3.scene.plugins.blender.structures.Constraint.Space;
import com.jme3.scene.plugins.blender.utils.DataRepository;
import com.jme3.scene.plugins.blender.utils.DataRepository.LoadedFeatureDataType;
@ -134,15 +136,23 @@ public abstract class AbstractInfluenceFunction {
* @param constraint
* the constraint instance
* @return target or subtarget feature
* @throws BlenderFileException this exception is thrown if the blend file is somehow corrupted
*/
protected Object getTarget(Constraint constraint, LoadedFeatureDataType loadedFeatureDataType) {
Long targetOMA = ((Pointer) constraint.getData().getFieldValue("tar")).getOldMemoryAddress();
Object targetObject = dataRepository.getLoadedFeature(targetOMA, loadedFeatureDataType);
String subtargetName = constraint.getData().getFieldValue("subtarget").toString();
if (subtargetName.length() > 0) {
protected Object getTarget(Constraint constraint, LoadedFeatureDataType loadedFeatureDataType) throws BlenderFileException {
//TODO: load the feature through objectHelper, this way we are certain the object loads and has
//his own constraints applied to traces
ObjectHelper objectHelper = dataRepository.getHelper(ObjectHelper.class);
//subtarget goes first
Object subtarget = constraint.getData().getFieldValue("subtarget");
String subtargetName = subtarget==null ? null : subtarget.toString();
if (subtargetName!=null && subtargetName.length() > 0) {
//TODO: what if it is not yet loaded ???
return dataRepository.getLoadedFeature(subtargetName, loadedFeatureDataType);
}
return targetObject;
//and now use the target
Long targetOMA = ((Pointer) constraint.getData().getFieldValue("target")).getOldMemoryAddress();
Structure objectStructure = dataRepository.getFileBlock(targetOMA).getStructure(dataRepository);
return objectHelper.toObject(objectStructure, dataRepository);
}
/**

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