67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/*
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Copyright 2007 nVidia, Inc.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
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You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and limitations under the License.
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*/
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#ifndef _TILE_H
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#define _TILE_H
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#include "ImfArray.h"
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#include <math.h>
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#include "arvo/Vec4.h"
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#include "utils.h"
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#include "rgba.h"
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using namespace Imf;
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using namespace ArvoMath;
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// extract a tile of pixels from an array
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class Tile
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{
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public:
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static const int TILE_H = 4;
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static const int TILE_W = 4;
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static const int TILE_TOTAL = TILE_H * TILE_W;
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Vec4 data[TILE_H][TILE_W];
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int size_x, size_y; // actual size of tile
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Tile() {};
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~Tile(){};
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Tile(int xs, int ys) {size_x = xs; size_y = ys;}
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// pixels -> tile
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void inline insert(const Array2D<RGBA> &pixels, int x, int y)
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{
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for (int y0=0; y0<size_y; ++y0)
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for (int x0=0; x0<size_x; ++x0)
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{
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data[y0][x0].X() = (pixels[y+y0][x+x0]).r;
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data[y0][x0].Y() = (pixels[y+y0][x+x0]).g;
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data[y0][x0].Z() = (pixels[y+y0][x+x0]).b;
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data[y0][x0].W() = (pixels[y+y0][x+x0]).a;
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}
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}
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// tile -> pixels
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void inline extract(Array2D<RGBA> &pixels, int x, int y)
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{
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for (int y0=0; y0<size_y; ++y0)
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for (int x0=0; x0<size_x; ++x0)
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{
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pixels[y+y0][x+x0].r = data[y0][x0].X();
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pixels[y+y0][x+x0].g = data[y0][x0].Y();
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pixels[y+y0][x+x0].b = data[y0][x0].Z();
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pixels[y+y0][x+x0].a = data[y0][x0].W();
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}
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}
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};
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#endif |