Michael Bayne
e9be71fdf2
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3836 542714f4-19e9-0310-aa3c-eee0fc999fb1
111 lines
3.4 KiB
Java
111 lines
3.4 KiB
Java
//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2005 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.jme.effect;
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import com.jme.math.Vector3f;
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import com.jme.renderer.ColorRGBA;
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import com.jme.renderer.Renderer;
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import com.jme.scene.Geometry;
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import com.jme.scene.shape.Quad;
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import com.jme.scene.state.AlphaState;
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import com.jme.system.DisplaySystem;
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import com.threerings.jme.util.LinearTimeFunction;
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import com.threerings.jme.util.TimeFunction;
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/**
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* Fades the screen in from a solid color or out to a solid color.
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*/
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public class FadeInOutEffect extends Quad
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{
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public FadeInOutEffect (ColorRGBA color, float startAlpha, float endAlpha,
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float duration, boolean overUI)
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{
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this(color, new LinearTimeFunction(startAlpha, endAlpha, duration),
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overUI);
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}
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public FadeInOutEffect (ColorRGBA color, TimeFunction alphaFunc,
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boolean overUI)
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{
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super("FadeInOut");
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_color = new ColorRGBA(
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color.r, color.g, color.b, alphaFunc.getValue(0));
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_alphaFunc = alphaFunc;
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// we need to render in the ortho queue
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setRenderQueueMode(Renderer.QUEUE_ORTHO);
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// create a quad the size of the screen
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DisplaySystem ds = DisplaySystem.getDisplaySystem();
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float width = ds.getWidth(), height = ds.getHeight();
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initialize(width, height);
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setLocalTranslation(new Vector3f(width/2, height/2, 0f));
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setZOrder(overUI ? -1 : 1);
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setDefaultColor(_color);
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AlphaState astate = ds.getRenderer().createAlphaState();
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astate.setBlendEnabled(true);
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astate.setSrcFunction(AlphaState.SB_SRC_ALPHA);
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astate.setDstFunction(AlphaState.DB_ONE_MINUS_SRC_ALPHA);
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astate.setEnabled(true);
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setRenderState(astate);
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updateRenderState();
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}
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/**
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* Allows the fade to be paused.
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*/
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public void setPaused (boolean paused)
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{
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_paused = paused;
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}
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// documentation inherited
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public void updateGeometricState (float time, boolean initiator)
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{
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super.updateGeometricState(time, initiator);
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if (_paused) {
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return;
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}
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float alpha = _alphaFunc.getValue(time);
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_color.a = Math.min(1f, Math.max(0f, alpha));
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if (_alphaFunc.isComplete()) {
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fadeComplete();
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}
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}
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/**
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* Called (only once) when we have reached the end of our fade.
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*/
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protected void fadeComplete ()
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{
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}
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protected ColorRGBA _color;
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protected TimeFunction _alphaFunc;
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protected boolean _paused;
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}
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