/******************************************************************************
* Spine Runtimes Software License
* Version 2.1
*
* Copyright (c) 2013, Esoteric Software
* All rights reserved.
*
* You are granted a perpetual, non-exclusive, non-sublicensable and
* non-transferable license to install, execute and perform the Spine Runtimes
* Software (the "Software") solely for internal use. Without the written
* permission of Esoteric Software (typically granted by licensing Spine), you
* may not (a) modify, translate, adapt or otherwise create derivative works,
* improvements of the Software or develop new applications using the Software
* or (b) remove, delete, alter or obscure any trademarks or any copyright,
* trademark, patent or other intellectual property or proprietary rights
* notices on or in the Software, including any copy thereof. Redistributions
* in binary or source form must include this license and terms.
*
* THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL ESOTERIC SOFTARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
package com.esotericsoftware.spine.attachments;
import com.esotericsoftware.spine.Bone;
import com.esotericsoftware.spine.Skeleton;
import com.esotericsoftware.spine.Slot;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.TextureAtlas.AtlasRegion;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.utils.FloatArray;
import com.badlogic.gdx.utils.NumberUtils;
/** Attachment that displays a texture region. */
public class SkinnedMeshAttachment extends Attachment {
private TextureRegion region;
private String path;
private int[] bones;
private float[] weights, regionUVs;
private short[] triangles;
private float[] worldVertices;
private final Color color = new Color(1, 1, 1, 1);
private int hullLength;
// Nonessential.
private int[] edges;
private float width, height;
public SkinnedMeshAttachment (String name) {
super(name);
}
public void setRegion (TextureRegion region) {
if (region == null) throw new IllegalArgumentException("region cannot be null.");
this.region = region;
}
public TextureRegion getRegion () {
if (region == null) throw new IllegalStateException("Region has not been set: " + this);
return region;
}
public void updateUVs () {
float[] regionUVs = this.regionUVs;
int verticesLength = regionUVs.length;
int worldVerticesLength = verticesLength / 2 * 5;
if (worldVertices == null || worldVertices.length != worldVerticesLength) worldVertices = new float[worldVerticesLength];
float u, v, width, height;
if (region == null) {
u = v = 0;
width = height = 1;
} else {
u = region.getU();
v = region.getV();
width = region.getU2() - u;
height = region.getV2() - v;
}
if (region instanceof AtlasRegion && ((AtlasRegion)region).rotate) {
for (int i = 0, w = 3; i < verticesLength; i += 2, w += 5) {
worldVertices[w] = u + regionUVs[i + 1] * width;
worldVertices[w + 1] = v + height - regionUVs[i] * height;
}
} else {
for (int i = 0, w = 3; i < verticesLength; i += 2, w += 5) {
worldVertices[w] = u + regionUVs[i] * width;
worldVertices[w + 1] = v + regionUVs[i + 1] * height;
}
}
}
public void updateWorldVertices (Slot slot, boolean premultipliedAlpha) {
Skeleton skeleton = slot.getSkeleton();
Color skeletonColor = skeleton.getColor();
Color meshColor = slot.getColor();
Color regionColor = color;
float a = skeletonColor.a * meshColor.a * regionColor.a * 255;
float multiplier = premultipliedAlpha ? a : 255;
float color = NumberUtils.intToFloatColor( //
((int)a << 24) //
| ((int)(skeletonColor.b * meshColor.b * regionColor.b * multiplier) << 16) //
| ((int)(skeletonColor.g * meshColor.g * regionColor.g * multiplier) << 8) //
| (int)(skeletonColor.r * meshColor.r * regionColor.r * multiplier));
float[] worldVertices = this.worldVertices;
float x = skeleton.getX(), y = skeleton.getY();
Object[] skeletonBones = skeleton.getBones().items;
float[] weights = this.weights;
int[] bones = this.bones;
FloatArray ffdArray = slot.getAttachmentVertices();
if (ffdArray.size == 0) {
for (int w = 0, v = 0, b = 0, n = bones.length; v < n; w += 5) {
float wx = 0, wy = 0;
int nn = bones[v++] + v;
for (; v < nn; v++, b += 3) {
Bone bone = (Bone)skeletonBones[bones[v]];
float vx = weights[b], vy = weights[b + 1], weight = weights[b + 2];
wx += (vx * bone.getM00() + vy * bone.getM01() + bone.getWorldX()) * weight;
wy += (vx * bone.getM10() + vy * bone.getM11() + bone.getWorldY()) * weight;
}
worldVertices[w] = wx + x;
worldVertices[w + 1] = wy + y;
worldVertices[w + 2] = color;
}
} else {
float[] ffd = ffdArray.items;
for (int w = 0, v = 0, b = 0, f = 0, n = bones.length; v < n; w += 5) {
float wx = 0, wy = 0;
int nn = bones[v++] + v;
for (; v < nn; v++, b += 3, f += 2) {
Bone bone = (Bone)skeletonBones[bones[v]];
float vx = weights[b] + ffd[f], vy = weights[b + 1] + ffd[f + 1], weight = weights[b + 2];
wx += (vx * bone.getM00() + vy * bone.getM01() + bone.getWorldX()) * weight;
wy += (vx * bone.getM10() + vy * bone.getM11() + bone.getWorldY()) * weight;
}
worldVertices[w] = wx + x;
worldVertices[w + 1] = wy + y;
worldVertices[w + 2] = color;
}
}
}
public float[] getWorldVertices () {
return worldVertices;
}
public int[] getBones () {
return bones;
}
/** For each vertex, the number of bones affecting the vertex followed by that many bone indices. Ie: count, boneIndex, ... */
public void setBones (int[] bones) {
this.bones = bones;
}
public float[] getWeights () {
return weights;
}
/** For each bone affecting the vertex, the vertex position in the bone's coordinate system and the weight for the bone's
* influence. Ie: x, y, weight, ... */
public void setWeights (float[] weights) {
this.weights = weights;
}
public short[] getTriangles () {
return triangles;
}
/** Vertex number triplets which describe the mesh's triangulation. */
public void setTriangles (short[] triangles) {
this.triangles = triangles;
}
public float[] getRegionUVs () {
return regionUVs;
}
/** For each vertex, a texure coordinate pair. Ie: u, v, ... */
public void setRegionUVs (float[] regionUVs) {
this.regionUVs = regionUVs;
}
public Color getColor () {
return color;
}
public String getPath () {
return path;
}
public void setPath (String path) {
this.path = path;
}
public int getHullLength () {
return hullLength;
}
public void setHullLength (int hullLength) {
this.hullLength = hullLength;
}
public void setEdges (int[] edges) {
this.edges = edges;
}
public int[] getEdges () {
return edges;
}
public float getWidth () {
return width;
}
public void setWidth (float width) {
this.width = width;
}
public float getHeight () {
return height;
}
public void setHeight (float height) {
this.height = height;
}
}