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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2017 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.helpers.MatrixHelper;
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import org.distorted.library.type.Data1D;
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import org.distorted.library.type.Data3D;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Rotate the Mesh by 'angle' degrees around the center, along an axis.
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*/
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public class MatrixEffectRotate extends MatrixEffect
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{
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private final Data1D mAngle;
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private final Data3D mAxis, mCenter;
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private float[] mTmp1 = new float[16];
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private float[] mTmp2 = new float[16];
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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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mCenter.get(uniforms,index+CENTER_OFFSET,currentDuration,step);
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mAxis.get(uniforms,index+1,currentDuration,step);
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return mAngle.get(uniforms,index,currentDuration,step);
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}
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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 void apply(float[] matrixP, float[] matrixV, float[] uniforms, int index)
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{
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float angle = uniforms[NUM_FLOAT_UNIFORMS*index ];
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float axisX = uniforms[NUM_FLOAT_UNIFORMS*index+1];
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float axisY = uniforms[NUM_FLOAT_UNIFORMS*index+2];
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float axisZ = uniforms[NUM_FLOAT_UNIFORMS*index+3];
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float x = uniforms[NUM_FLOAT_UNIFORMS*index+CENTER_OFFSET ];
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float y = uniforms[NUM_FLOAT_UNIFORMS*index+CENTER_OFFSET+1];
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float z = uniforms[NUM_FLOAT_UNIFORMS*index+CENTER_OFFSET+2];
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double inRadians = Math.PI*angle/180;
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float sin = (float)Math.sin(inRadians);
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float cos = (float)Math.cos(inRadians);
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MatrixHelper.translate(matrixP, x, y, z);
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MatrixHelper.rotateSinCos(matrixP, mTmp1, mTmp2, sin,cos, axisX, axisY, axisZ);
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MatrixHelper.translate(matrixP,-x,-y,-z);
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MatrixHelper.translate(matrixV, x, y, z);
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MatrixHelper.rotateSinCos(matrixV, mTmp1, mTmp2, sin,cos, axisX, axisY, axisZ);
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MatrixHelper.translate(matrixV,-x,-y,-z);
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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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* Rotate the Mesh by 'angle' degrees around the center, along an axis.
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*
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* @param angle Angle that we want to rotate the Object to. Unit: degrees
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* @param axis Axis of rotation
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* @param center Coordinates of the Point we are rotating around.
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*/
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public MatrixEffectRotate(Data1D angle, Data3D axis, Data3D center)
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{
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super(EffectName.ROTATE);
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mAngle = angle;
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mAxis = axis;
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mCenter = center;
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}
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}
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