/*
* Copyright (c) 2011-2016, Peter Abeles. All Rights Reserved.
*
* This file is part of BoofCV (http://boofcv.org).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package boofcv.alg.distort;
import boofcv.struct.distort.PixelTransform2_F32;
import georegression.struct.point.Point2D_F32;
/**
* Precomputes transformations for each pixel in the image. Doesn't check bounds and will give an incorrect result
* or crash if outside pixels are requested.
*
* @author Peter Abeles
*/
public class PixelTransformCached_F32 extends PixelTransform2_F32 {
Point2D_F32 map[];
int width,height;
public PixelTransformCached_F32(int width, int height, PixelTransform2_F32 transform ) {
this.width = width+1; // add one to the width since some stuff checks the outside border
this.height = height+1;
map = new Point2D_F32[this.width*this.height];
int index = 0;
for (int y = 0; y < this.height; y++) {
for (int x = 0; x < this.width; x++) {
transform.compute(x,y);
map[index++] = new Point2D_F32(transform.distX,transform.distY);
}
}
}
@Override
public void compute(int x, int y) {
// if( x < 0 || y < 0 || x >= width || y >= height )
// throw new IllegalArgumentException("Out of bounds");
Point2D_F32 p = map[y*width+x];
distX = p.x;
distY = p.y;
}
}