| /* |
| * Copyright (c) 2009-2010 jMonkeyEngine |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * * Neither the name of 'jMonkeyEngine' nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * 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.jme3.post.filters; |
| |
| import com.jme3.asset.AssetManager; |
| import com.jme3.material.Material; |
| import com.jme3.post.Filter; |
| import com.jme3.renderer.RenderManager; |
| import com.jme3.renderer.ViewPort; |
| |
| /** |
| * A post-processing filter that performs a depth range |
| * blur using a scaled convolution filter. |
| * |
| * @version $Revision: 779 $ |
| * @author Paul Speed |
| */ |
| public class DepthOfFieldFilter extends Filter { |
| |
| private float focusDistance = 50f; |
| private float focusRange = 10f; |
| private float blurScale = 1f; |
| // These values are set internally based on the |
| // viewport size. |
| private float xScale; |
| private float yScale; |
| |
| /** |
| * Creates a DepthOfField filter |
| */ |
| public DepthOfFieldFilter() { |
| super("Depth Of Field"); |
| } |
| |
| @Override |
| protected boolean isRequiresDepthTexture() { |
| return true; |
| } |
| |
| @Override |
| protected Material getMaterial() { |
| |
| return material; |
| } |
| |
| @Override |
| protected void initFilter(AssetManager assets, RenderManager renderManager, |
| ViewPort vp, int w, int h) { |
| material = new Material(assets, "Common/MatDefs/Post/DepthOfField.j3md"); |
| material.setFloat("FocusDistance", focusDistance); |
| material.setFloat("FocusRange", focusRange); |
| |
| |
| xScale = 1.0f / w; |
| yScale = 1.0f / h; |
| |
| material.setFloat("XScale", blurScale * xScale); |
| material.setFloat("YScale", blurScale * yScale); |
| } |
| |
| /** |
| * Sets the distance at which objects are purely in focus. |
| */ |
| public void setFocusDistance(float f) { |
| |
| this.focusDistance = f; |
| if (material != null) { |
| material.setFloat("FocusDistance", focusDistance); |
| } |
| |
| } |
| |
| /** |
| * returns the focus distance |
| * @return |
| */ |
| public float getFocusDistance() { |
| return focusDistance; |
| } |
| |
| /** |
| * Sets the range to either side of focusDistance where the |
| * objects go gradually out of focus. Less than focusDistance - focusRange |
| * and greater than focusDistance + focusRange, objects are maximally "blurred". |
| */ |
| public void setFocusRange(float f) { |
| this.focusRange = f; |
| if (material != null) { |
| material.setFloat("FocusRange", focusRange); |
| } |
| |
| } |
| |
| /** |
| * returns the focus range |
| * @return |
| */ |
| public float getFocusRange() { |
| return focusRange; |
| } |
| |
| /** |
| * Sets the blur amount by scaling the convolution filter up or |
| * down. A value of 1 (the default) performs a sparse 5x5 evenly |
| * distribubted convolution at pixel level accuracy. Higher values skip |
| * more pixels, and so on until you are no longer blurring the image |
| * but simply hashing it. |
| * |
| * The sparse convolution is as follows: |
| *%MINIFYHTMLc3d0cd9fab65de6875a381fd3f83e1b338%* |
| * Where 'x' is the texel being modified. Setting blur scale higher |
| * than 1 spaces the samples out. |
| */ |
| public void setBlurScale(float f) { |
| this.blurScale = f; |
| if (material != null) { |
| material.setFloat("XScale", blurScale * xScale); |
| material.setFloat("YScale", blurScale * yScale); |
| } |
| } |
| |
| /** |
| * returns the blur scale |
| * @return |
| */ |
| public float getBlurScale() { |
| return blurScale; |
| } |
| } |