/**
* Copyright (c) 2008-2012 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at <http://www.ardor3d.com/LICENSE>.
*/
package com.ardor3d.example.renderer;
import com.ardor3d.bounding.BoundingBox;
import com.ardor3d.example.ExampleBase;
import com.ardor3d.example.Purpose;
import com.ardor3d.image.Texture;
import com.ardor3d.image.Texture.ApplyMode;
import com.ardor3d.image.Texture.CombinerFunctionRGB;
import com.ardor3d.image.Texture.CombinerOperandRGB;
import com.ardor3d.image.Texture.CombinerSource;
import com.ardor3d.renderer.state.TextureState;
import com.ardor3d.scenegraph.hint.LightCombineMode;
import com.ardor3d.scenegraph.shape.Quad;
import com.ardor3d.util.ReadOnlyTimer;
import com.ardor3d.util.TextureManager;
/**
* Shows interpolated textures using texture combine.
*/
@Purpose(htmlDescriptionKey = "com.ardor3d.example.renderer.TexCombineExample", //
thumbnailPath = "com/ardor3d/example/media/thumbnails/renderer_TexCombineExample.jpg", //
maxHeapMemory = 64)
public class TexCombineExample extends ExampleBase {
public static void main(final String[] args) {
start(TexCombineExample.class);
}
private final TextureState ts = new TextureState();
float blend = 0;
int direction = 1;
@Override
protected void initExample() {
_canvas.setTitle("TexCombine Example");
final Quad quad = new Quad("Box", 4, 4);
quad.setModelBound(new BoundingBox());
quad.getSceneHints().setLightCombineMode(LightCombineMode.Off);
_root.attachChild(quad);
final Texture ardorLogo = TextureManager.load("images/ardor3d_white_256.jpg",
Texture.MinificationFilter.Trilinear, true);
addTexture(ardorLogo, 0, blend);
quad.setRenderState(ts);
}
@Override
protected void updateExample(final ReadOnlyTimer timer) {
blend += direction * (timer.getTimePerFrame() / 5);
if (blend > 1.0f) {
blend = 1.0f;
direction = -1;
} else if (blend < 0.0f) {
blend = 0;
direction = 1;
}
updateLayerBlend(0, blend);
}
private void addTexture(final Texture src, final int layer, final float blend) {
final Texture tex = src.createSimpleClone();
// set up texture blending properties
tex.setApply(ApplyMode.Combine);
tex.setCombineFuncRGB(CombinerFunctionRGB.Interpolate);
// color 1
tex.setCombineSrc0RGB(CombinerSource.CurrentTexture);
tex.setCombineOp0RGB(CombinerOperandRGB.SourceColor);
// color 2
tex.setCombineSrc1RGB(CombinerSource.Previous);
tex.setCombineOp1RGB(CombinerOperandRGB.SourceColor);
// interpolate param will come from alpha of constant color
tex.setCombineSrc2RGB(CombinerSource.Constant);
tex.setCombineOp2RGB(CombinerOperandRGB.SourceAlpha);
ts.setTexture(tex, layer);
// set blend
updateLayerBlend(layer, blend);
}
public void updateLayerBlend(final int layer, final float amount) {
final Texture tex = ts.getTexture(layer);
if (tex != null && tex.getConstantColor().getAlpha() != amount) {
tex.setConstantColor(0, 0, 0, amount);
}
}
}