/******************************************************************************
* Spine Runtime Software License - Version 1.1
*
* Copyright (c) 2013, Esoteric Software
* All rights reserved.
*
* Redistribution and use in source and binary forms in whole or in part, with
* or without modification, are permitted provided that the following conditions
* are met:
*
* 1. A Spine Essential, Professional, Enterprise, or Education License must
* be purchased from Esoteric Software and the license must remain valid:
* http://esotericsoftware.com/
* 2. Redistributions of source code must retain this license, which is the
* above copyright notice, this declaration of conditions and the following
* disclaimer.
* 3. Redistributions in binary form must reproduce this license, which is the
* above copyright notice, this declaration of conditions and the following
* disclaimer, in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.badlogic.gdx.graphics.GL11;
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[] quadTriangle = {0, 1, 2, 2, 3, 0};
private boolean premultipliedAlpha;
public void draw (PolygonSpriteBatch batch, Skeleton skeleton) {
boolean premultipliedAlpha = this.premultipliedAlpha;
int srcFunc = premultipliedAlpha ? GL11.GL_ONE : GL11.GL_SRC_ALPHA;
batch.setBlendFunction(srcFunc, GL11.GL_ONE_MINUS_SRC_ALPHA);
boolean additive = false;
float[] vertices;
short[] triangles;
Texture texture;
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 region = (RegionAttachment)attachment;
region.updateWorldVertices(slot, premultipliedAlpha);
vertices = region.getWorldVertices();
triangles = quadTriangle;
texture = region.getRegion().getTexture();
if (slot.data.getAdditiveBlending() != additive) {
additive = !additive;
if (additive)
batch.setBlendFunction(srcFunc, GL11.GL_ONE);
else
batch.setBlendFunction(srcFunc, GL11.GL_ONE_MINUS_SRC_ALPHA);
}
batch.draw(texture, vertices, 0, vertices.length, triangles, 0, triangles.length);
} else if (attachment instanceof MeshAttachment) {
MeshAttachment mesh = (MeshAttachment)attachment;
mesh.updateWorldVertices(slot, true);
vertices = mesh.getWorldVertices();
triangles = mesh.getTriangles();
texture = mesh.getRegion().getTexture();
batch.draw(texture, vertices, 0, vertices.length, triangles, 0, triangles.length);
} 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.setX(bone.getWorldX());
attachmentSkeleton.setY(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 draw (Batch batch, Skeleton skeleton) {
boolean premultipliedAlpha = this.premultipliedAlpha;
int srcFunc = premultipliedAlpha ? GL11.GL_ONE : GL11.GL_SRC_ALPHA;
batch.setBlendFunction(srcFunc, GL11.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, GL11.GL_ONE);
else
batch.setBlendFunction(srcFunc, GL11.GL_ONE_MINUS_SRC_ALPHA);
}
batch.draw(regionAttachment.getRegion().getTexture(), vertices, 0, 20);
} 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.setX(bone.getWorldX());
attachmentSkeleton.setY(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;
}
}