com.jme3.bullet.control.ragdoll

Class RagdollUtils

java.lang.Object

com.jme3.bullet.control.ragdoll.RagdollUtils

public class RagdollUtils
extends java.lang.Object

Utility methods used by KinematicRagdollControl.

This class is shared between JBullet and Native Bullet.

Author:

Nehon

Method Summary

Modifier and Type	Method and Description
static java.util.Map<java.lang.Integer,java.util.List<java.lang.Float>>	buildPointMap(com.jme3.scene.Spatial model) Build a map of mesh vertices in a subtree of the scene graph.
static java.util.List<java.lang.Integer>	getBoneIndices(com.jme3.animation.Bone bone, com.jme3.animation.Skeleton skeleton, java.util.Set<java.lang.String> boneList) Enumerate the bone indices of the specified bone and all its descendents.
static boolean	hasVertices(int boneIndex, com.jme3.scene.Mesh[] targets, float weightThreshold) Test whether the indexed bone has at least one vertex in the specified meshes with a weight greater than the specified threshold.
static HullCollisionShape	makeShapeFromPointMap(java.util.Map<java.lang.Integer,java.util.List<java.lang.Float>> pointsMap, java.util.List<java.lang.Integer> boneIndices, com.jme3.math.Vector3f initialScale, com.jme3.math.Vector3f initialPosition) Create a hull collision shape from linked vertices to this bone.
static HullCollisionShape	makeShapeFromVerticeWeights(com.jme3.scene.Spatial model, java.util.List<java.lang.Integer> boneIndices, com.jme3.math.Vector3f initialScale, com.jme3.math.Vector3f initialPosition, float weightThreshold) Create a hull collision shape from linked vertices to this bone.
static int	readIndex(java.nio.Buffer buffer, int k) Read an index from a buffer.
static void	setJointLimit(SixDofJoint joint, float maxX, float minX, float maxY, float minY, float maxZ, float minZ) Alter the limits of the specified 6-DOF joint.
static void	setTransform(com.jme3.animation.Bone bone, com.jme3.math.Vector3f pos, com.jme3.math.Quaternion rot, boolean restoreBoneControl, java.util.Set<java.lang.String> boneList) Updates a bone position and rotation.
static void	setUserControl(com.jme3.animation.Bone bone, boolean bool) Alter the user-control flags of a bone and all its descendents.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

setJointLimit

public static void setJointLimit(SixDofJoint joint,
                                 float maxX,
                                 float minX,
                                 float maxY,
                                 float minY,
                                 float maxZ,
                                 float minZ)

Alter the limits of the specified 6-DOF joint.

Parameters:

joint - which joint to alter (not null)

maxX - the maximum rotation on the X axis (in radians)

minX - the minimum rotation on the X axis (in radians)

maxY - the maximum rotation on the Y axis (in radians)

minY - the minimum rotation on the Y axis (in radians)

maxZ - the maximum rotation on the Z axis (in radians)

minZ - the minimum rotation on the Z axis (in radians)

buildPointMap

public static java.util.Map<java.lang.Integer,java.util.List<java.lang.Float>> buildPointMap(com.jme3.scene.Spatial model)

Build a map of mesh vertices in a subtree of the scene graph.

Parameters:

model - the root of the subtree (may be null)

Returns:

a new map (not null)

makeShapeFromPointMap

public static HullCollisionShape makeShapeFromPointMap(java.util.Map<java.lang.Integer,java.util.List<java.lang.Float>> pointsMap,
                                                       java.util.List<java.lang.Integer> boneIndices,
                                                       com.jme3.math.Vector3f initialScale,
                                                       com.jme3.math.Vector3f initialPosition)

Create a hull collision shape from linked vertices to this bone. Vertices must have previously been gathered using buildPointMap().

Parameters:

pointsMap - map from bone indices to coordinates (not null, unaffected)

boneIndices - (not null, unaffected)

initialScale - scale factors (not null, unaffected)

initialPosition - location (not null, unaffected)

Returns:

a new shape (not null)

getBoneIndices

public static java.util.List<java.lang.Integer> getBoneIndices(com.jme3.animation.Bone bone,
                                                               com.jme3.animation.Skeleton skeleton,
                                                               java.util.Set<java.lang.String> boneList)

Enumerate the bone indices of the specified bone and all its descendents.

Parameters:

bone - the input bone (not null)

skeleton - the skeleton containing the bone (not null)

boneList - a set of bone names (not null, unaffected)

Returns:

a new list (not null)

makeShapeFromVerticeWeights

public static HullCollisionShape makeShapeFromVerticeWeights(com.jme3.scene.Spatial model,
                                                             java.util.List<java.lang.Integer> boneIndices,
                                                             com.jme3.math.Vector3f initialScale,
                                                             com.jme3.math.Vector3f initialPosition,
                                                             float weightThreshold)

Create a hull collision shape from linked vertices to this bone.

Parameters:

model - the model on which to base the shape

boneIndices - indices of relevant bones (not null, unaffected)

initialScale - scale factors

initialPosition - location

weightThreshold - minimum weight for inclusion

Returns:

a new shape

setTransform

public static void setTransform(com.jme3.animation.Bone bone,
                                com.jme3.math.Vector3f pos,
                                com.jme3.math.Quaternion rot,
                                boolean restoreBoneControl,
                                java.util.Set<java.lang.String> boneList)

Updates a bone position and rotation. if the child bones are not in the bone list this means, they are not associated with a physics shape. So they have to be updated

Parameters:

bone - the bone

pos - the position

rot - the rotation

restoreBoneControl - true → user-control flag should be set

boneList - the names of all bones without collision shapes (not null, unaffected)

setUserControl

public static void setUserControl(com.jme3.animation.Bone bone,
                                  boolean bool)

Alter the user-control flags of a bone and all its descendents.

Parameters:

bone - the ancestor bone (not null, modified)

bool - true to enable user control, false to disable

hasVertices

public static boolean hasVertices(int boneIndex,
                                  com.jme3.scene.Mesh[] targets,
                                  float weightThreshold)

Test whether the indexed bone has at least one vertex in the specified meshes with a weight greater than the specified threshold.

Parameters:

boneIndex - the index of the bone (≥0)

targets - the meshes to search (not null, no null elements)

weightThreshold - the threshold (≥0, ≤1)

Returns:

true if at least 1 vertex found, otherwise false

readIndex

public static int readIndex(java.nio.Buffer buffer,
                            int k)

Read an index from a buffer.

Parameters:

buffer - a buffer of bytes or shorts (not null)

k - the position from which the index will be read

Returns:

the index value (≥0)