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library / src / main / java / org / distorted / library / effect / VertexEffectScale.java @ c1fa9e3c

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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2020 Leszek Koltunski                                                               //
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//                                                                                               //
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// This file is part of Distorted.                                                               //
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//                                                                                               //
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// Distorted is free software: you can redistribute it and/or modify                             //
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// it under the terms of the GNU General Public License as published by                          //
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// the Free Software Foundation, either version 2 of the License, or                             //
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// (at your option) any later version.                                                           //
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//                                                                                               //
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// Distorted 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                                 //
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// GNU General Public License for more details.                                                  //
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//                                                                                               //
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// You should have received a copy of the GNU General Public License                             //
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// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //
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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 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 "v *= vUniforms[effect].xyz;";
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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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