/******************************************************************************
* 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;
import com.esotericsoftware.spine.attachments.Attachment;
import com.esotericsoftware.spine.attachments.MeshAttachment;
import com.esotericsoftware.spine.attachments.RegionAttachment;
import com.esotericsoftware.spine.attachments.SkeletonAttachment;
import com.esotericsoftware.spine.attachments.SkinnedMeshAttachment;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
import com.badlogic.gdx.utils.Array;
public class SkeletonRenderer {
static private final short[] quadTriangles = {0, 1, 2, 2, 3, 0};
private boolean premultipliedAlpha;
@SuppressWarnings("null")
public void draw (PolygonSpriteBatch batch, Skeleton skeleton) {
boolean premultipliedAlpha = this.premultipliedAlpha;
int srcFunc = premultipliedAlpha ? GL20.GL_ONE : GL20.GL_SRC_ALPHA;
batch.setBlendFunction(srcFunc, GL20.GL_ONE_MINUS_SRC_ALPHA);
boolean additive = false;
float[] vertices = null;
short[] triangles = null;
Array<Slot> drawOrder = skeleton.drawOrder;
for (int i = 0, n = drawOrder.size; i < n; i++) {
Slot slot = drawOrder.get(i);
Attachment attachment = slot.attachment;
Texture texture = null;
if (attachment instanceof RegionAttachment) {
RegionAttachment region = (RegionAttachment)attachment;
region.updateWorldVertices(slot, premultipliedAlpha);
vertices = region.getWorldVertices();
triangles = quadTriangles;
texture = region.getRegion().getTexture();
} else if (attachment instanceof MeshAttachment) {
MeshAttachment mesh = (MeshAttachment)attachment;
mesh.updateWorldVertices(slot, true);
vertices = mesh.getWorldVertices();
triangles = mesh.getTriangles();
texture = mesh.getRegion().getTexture();
} else if (attachment instanceof SkinnedMeshAttachment) {
SkinnedMeshAttachment mesh = (SkinnedMeshAttachment)attachment;
mesh.updateWorldVertices(slot, true);
vertices = mesh.getWorldVertices();
triangles = mesh.getTriangles();
texture = mesh.getRegion().getTexture();
} else if (attachment instanceof SkeletonAttachment) {
Skeleton attachmentSkeleton = ((SkeletonAttachment)attachment).getSkeleton();
if (attachmentSkeleton == null) continue;
Bone bone = slot.getBone();
Bone rootBone = attachmentSkeleton.getRootBone();
float oldScaleX = rootBone.getScaleX();
float oldScaleY = rootBone.getScaleY();
float oldRotation = rootBone.getRotation();
attachmentSkeleton.setPosition(skeleton.getX() + bone.getWorldX(), skeleton.getY() + bone.getWorldY());
rootBone.setScaleX(1 + bone.getWorldScaleX() - oldScaleX);
rootBone.setScaleY(1 + bone.getWorldScaleY() - oldScaleY);
rootBone.setRotation(oldRotation + bone.getWorldRotation());
attachmentSkeleton.updateWorldTransform();
draw(batch, attachmentSkeleton);
attachmentSkeleton.setPosition(0, 0);
rootBone.setScaleX(oldScaleX);
rootBone.setScaleY(oldScaleY);
rootBone.setRotation(oldRotation);
}
if (texture != null) {
if (slot.data.getAdditiveBlending() != additive) {
additive = !additive;
if (additive)
batch.setBlendFunction(srcFunc, GL20.GL_ONE);
else
batch.setBlendFunction(srcFunc, GL20.GL_ONE_MINUS_SRC_ALPHA);
}
batch.draw(texture, vertices, 0, vertices.length, triangles, 0, triangles.length);
}
}
}
public void draw (Batch batch, Skeleton skeleton) {
boolean premultipliedAlpha = this.premultipliedAlpha;
int srcFunc = premultipliedAlpha ? GL20.GL_ONE : GL20.GL_SRC_ALPHA;
batch.setBlendFunction(srcFunc, GL20.GL_ONE_MINUS_SRC_ALPHA);
boolean additive = false;
Array<Slot> drawOrder = skeleton.drawOrder;
for (int i = 0, n = drawOrder.size; i < n; i++) {
Slot slot = drawOrder.get(i);
Attachment attachment = slot.attachment;
if (attachment instanceof RegionAttachment) {
RegionAttachment regionAttachment = (RegionAttachment)attachment;
regionAttachment.updateWorldVertices(slot, premultipliedAlpha);
float[] vertices = regionAttachment.getWorldVertices();
if (slot.data.getAdditiveBlending() != additive) {
additive = !additive;
if (additive)
batch.setBlendFunction(srcFunc, GL20.GL_ONE);
else
batch.setBlendFunction(srcFunc, GL20.GL_ONE_MINUS_SRC_ALPHA);
}
batch.draw(regionAttachment.getRegion().getTexture(), vertices, 0, 20);
} else if (attachment instanceof MeshAttachment || attachment instanceof SkinnedMeshAttachment) {
throw new RuntimeException("PolygonSpriteBatch is required to render meshes.");
} else if (attachment instanceof SkeletonAttachment) {
Skeleton attachmentSkeleton = ((SkeletonAttachment)attachment).getSkeleton();
if (attachmentSkeleton == null) continue;
Bone bone = slot.getBone();
Bone rootBone = attachmentSkeleton.getRootBone();
float oldScaleX = rootBone.getScaleX();
float oldScaleY = rootBone.getScaleY();
float oldRotation = rootBone.getRotation();
attachmentSkeleton.setPosition(skeleton.getX() + bone.getWorldX(), skeleton.getY() + bone.getWorldY());
rootBone.setScaleX(1 + bone.getWorldScaleX() - oldScaleX);
rootBone.setScaleY(1 + bone.getWorldScaleY() - oldScaleY);
rootBone.setRotation(oldRotation + bone.getWorldRotation());
attachmentSkeleton.updateWorldTransform();
draw(batch, attachmentSkeleton);
attachmentSkeleton.setX(0);
attachmentSkeleton.setY(0);
rootBone.setScaleX(oldScaleX);
rootBone.setScaleY(oldScaleY);
rootBone.setRotation(oldRotation);
}
}
}
public void setPremultipliedAlpha (boolean premultipliedAlpha) {
this.premultipliedAlpha = premultipliedAlpha;
}
}