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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2019 Leszek Koltunski leszek@koltunski.pl //
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// //
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// This file is part of Distorted. //
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// //
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// This library is free software; you can redistribute it and/or //
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// modify it under the terms of the GNU Lesser General Public //
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// License as published by the Free Software Foundation; either //
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// version 2.1 of the License, or (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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.library.effect;
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import org.distorted.library.type.Data3D;
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import org.distorted.library.type.Static3D;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Scale the Mesh by 3D scale factors.
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*/
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public class VertexEffectScale extends VertexEffect
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{
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private static final EffectName NAME = EffectName.VERTEX_SCALE;
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private final Data3D mScale;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Only for use by the library itself.
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*
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* @y.exclude
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*/
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public boolean compute(float[] uniforms, int index, long currentDuration, long step )
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{
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return mScale.get(uniforms,index+VALUES_OFFSET,currentDuration,step);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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static String code()
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{
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return
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"v *= vUniforms[effect].xyz; \n" +
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"float X = vUniforms[effect].y*vUniforms[effect].z; \n" +
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"float Y = vUniforms[effect].x*vUniforms[effect].z; \n" +
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"float Z = vUniforms[effect].x*vUniforms[effect].y; \n" +
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"n *= vec3(X,Y,Z); \n" +
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"n = normalize(n); \n";
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Have to call this before the shaders get compiled (i.e before DistortedLibrary.onCreate()) for the Effect to work.
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*/
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public static void enable()
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{
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addEffect( NAME, code() );
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Scale the Mesh by 3D scale factors.
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*
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* @param scale current x- , y- and z- scale factors.
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*/
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public VertexEffectScale(Data3D scale)
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{
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super(NAME);
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mScale = scale;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Scale the Mesh by 3D scale factors.
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*
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* @param scale Common x,y, and z scale factor.
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*/
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public VertexEffectScale(float scale)
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{
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super(NAME);
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mScale = new Static3D(scale,scale,scale);
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}
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}
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