mirror of https://github.com/etlegacy/EasyGen.git
347 lines
11 KiB
C++
347 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
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// Digital Ltd. LLC
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Industrial Light & Magic nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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///////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------------
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//
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// Code examples that show how class TiledRgbaInputFile and
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// class TiledRgbaOutputFile can be used to read and write
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// OpenEXR image files with 16-bit floating-point red,
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// green, blue and alpha channels.
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//
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//-----------------------------------------------------------------------------
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#include <ImfTiledRgbaFile.h>
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#include <ImfStringAttribute.h>
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#include <ImfMatrixAttribute.h>
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#include <ImfArray.h>
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#include "drawImage.h"
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#include <iostream>
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#include "namespaceAlias.h"
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using namespace CustomImf;
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using namespace std;
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using namespace IMATH_NAMESPACE;
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void
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writeTiledRgbaONE1 (const char fileName[],
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const Rgba *pixels,
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int width, int height,
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int tileWidth, int tileHeight)
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{
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//
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// Write a tiled image with one level using an image-sized framebuffer.
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//
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TiledRgbaOutputFile out (fileName,
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width, height, // image size
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tileWidth, tileHeight, // tile size
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ONE_LEVEL, // level mode
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ROUND_DOWN, // rounding mode
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WRITE_RGBA); // channels in file
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out.setFrameBuffer (pixels, 1, width);
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out.writeTiles (0, out.numXTiles() - 1, 0, out.numYTiles() - 1);
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}
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void
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writeTiledRgbaONE2 (const char fileName[],
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int width, int height,
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int tileWidth, int tileHeight)
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{
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//
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// Write a tiled image with one level using a tile-sized framebuffer.
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//
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TiledRgbaOutputFile out (fileName,
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width, height, // image size
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tileWidth, tileHeight, // tile size
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ONE_LEVEL, // level mode
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ROUND_DOWN, // rounding mode
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WRITE_RGBA); // channels in file
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Array2D<Rgba> pixels (tileHeight, tileWidth);
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for (int tileY = 0; tileY < out.numYTiles (); ++tileY)
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{
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for (int tileX = 0; tileX < out.numXTiles (); ++tileX)
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{
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Box2i range = out.dataWindowForTile (tileX, tileY);
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drawImage3 (pixels,
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width, height,
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range.min.x, range.max.x + 1,
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range.min.y, range.max.y + 1,
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0, 0);
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out.setFrameBuffer (&pixels[-range.min.y][-range.min.x],
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1, // xStride
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tileWidth); // yStride
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out.writeTile (tileX, tileY);
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}
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}
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}
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void
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writeTiledRgbaMIP1 (const char fileName[],
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int width, int height,
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int tileWidth, int tileHeight)
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{
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//
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// Write a tiled image with mipmap levels using an image-sized framebuffer.
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//
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TiledRgbaOutputFile out (fileName,
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width, height, // image size
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tileWidth, tileHeight, // tile size
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MIPMAP_LEVELS, // level mode
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ROUND_DOWN, // rounding mode
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WRITE_RGBA); // channels in file
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Array2D<Rgba> pixels (height, width);
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out.setFrameBuffer (&pixels[0][0], 1, width);
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for (int level = 0; level < out.numLevels (); ++level)
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{
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drawImage4 (pixels,
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out.levelWidth (level), out.levelHeight (level),
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0, out.levelWidth (level),
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0, out.levelHeight (level),
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level, level);
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out.writeTiles (0, out.numXTiles (level) - 1,
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0, out.numYTiles (level) - 1,
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level);
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}
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}
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void
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writeTiledRgbaMIP2 (const char fileName[],
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int width, int height,
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int tileWidth, int tileHeight)
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{
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//
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// Write a tiled image with mipmap levels using a tile-sized framebuffer.
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//
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TiledRgbaOutputFile out (fileName,
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width, height, // image size
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tileWidth, tileHeight, // tile size
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MIPMAP_LEVELS, // level mode
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ROUND_DOWN, // rounding mode
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WRITE_RGBA); // channels in file
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Array2D<Rgba> pixels (tileHeight, tileWidth);
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for (int level = 0; level < out.numLevels (); ++level)
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{
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for (int tileY = 0; tileY < out.numYTiles (level); ++tileY)
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{
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for (int tileX = 0; tileX < out.numXTiles (level); ++tileX)
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{
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Box2i range = out.dataWindowForTile (tileX, tileY, level);
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drawImage4 (pixels,
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out.levelWidth (level), out.levelHeight (level),
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range.min.x, range.max.x + 1,
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range.min.y, range.max.y + 1,
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level, level);
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out.setFrameBuffer (&pixels[-range.min.y][-range.min.x],
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1, // xStride
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tileWidth); // yStride
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out.writeTile (tileX, tileY, level);
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}
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}
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}
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}
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void
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writeTiledRgbaRIP1 (const char fileName[],
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int width, int height,
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int tileWidth, int tileHeight)
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{
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//
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// Write a tiled image with ripmap levels using an image-sized framebuffer.
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//
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TiledRgbaOutputFile out (fileName,
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width, height, // image size
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tileWidth, tileHeight, // tile size
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RIPMAP_LEVELS, // level mode
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ROUND_DOWN, // rounding mode
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WRITE_RGBA); // channels in file
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Array2D<Rgba> pixels (height, width);
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out.setFrameBuffer (&pixels[0][0], 1, width);
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for (int yLevel = 0; yLevel < out.numYLevels (); ++yLevel)
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{
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for (int xLevel = 0; xLevel < out.numXLevels (); ++xLevel)
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{
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drawImage5 (pixels,
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out.levelWidth (xLevel), out.levelHeight (yLevel),
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0, out.levelWidth (xLevel),
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0, out.levelHeight (yLevel),
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xLevel, yLevel);
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out.writeTiles (0, out.numXTiles (xLevel) - 1,
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0, out.numYTiles (yLevel) - 1,
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xLevel,
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yLevel);
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}
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}
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}
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void
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writeTiledRgbaRIP2 (const char fileName[],
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int width, int height,
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int tileWidth, int tileHeight)
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{
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//
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// Write a tiled image with ripmap levels using a tile-sized framebuffer.
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//
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TiledRgbaOutputFile out (fileName,
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width, height, // image size
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tileWidth, tileHeight, // tile size
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RIPMAP_LEVELS, // level mode
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ROUND_DOWN, // rounding mode
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WRITE_RGBA); // channels in file
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Array2D<Rgba> pixels (tileHeight, tileWidth);
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for (int yLevel = 0; yLevel < out.numYLevels(); ++yLevel)
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{
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for (int xLevel = 0; xLevel < out.numXLevels(); ++xLevel)
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{
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for (int tileY = 0; tileY < out.numYTiles (yLevel); ++tileY)
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{
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for (int tileX = 0; tileX < out.numXTiles (xLevel); ++tileX)
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{
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Box2i range = out.dataWindowForTile (tileX, tileY,
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xLevel, yLevel);
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drawImage5 (pixels ,
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out.levelWidth(xLevel), out.levelHeight(yLevel),
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range.min.x, range.max.x + 1,
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range.min.y, range.max.y + 1,
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xLevel, yLevel);
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out.setFrameBuffer (&pixels[-range.min.y][-range.min.x],
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1, // xStride
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tileWidth); // yStride
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out.writeTile (tileX, tileY, xLevel, yLevel);
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}
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}
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}
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}
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}
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void
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readTiledRgba1 (const char fileName[],
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Array2D<Rgba> &pixels,
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int &width,
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int &height)
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{
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TiledRgbaInputFile in (fileName);
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Box2i dw = in.dataWindow();
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width = dw.max.x - dw.min.x + 1;
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height = dw.max.y - dw.min.y + 1;
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int dx = dw.min.x;
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int dy = dw.min.y;
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pixels.resizeErase (height, width);
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in.setFrameBuffer (&pixels[-dy][-dx], 1, width);
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in.readTiles (0, in.numXTiles() - 1, 0, in.numYTiles() - 1);
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}
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void
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rgbaInterfaceTiledExamples ()
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{
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cout << "\nRGBA tiled images\n" << endl;
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const int tw = 100;
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const int th = 75;
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int w = 600;
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int h = 400;
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cout << "writing tiled image with image-size framebuffer" << endl;
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Array2D<Rgba> pixels (h, w);
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drawImage3 (pixels, w, h, 0, w, 0, h, 0);
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writeTiledRgbaONE1 ("tiledrgba1.exr", &pixels[0][0], w, h, tw, th);
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cout << "writing tiled image with tile-size framebuffer" << endl;
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writeTiledRgbaONE2 ("tiledrgba2.exr", w, h, tw, th);
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cout << "writing tiled mipmap image with image-size framebuffer" << endl;
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writeTiledRgbaMIP1 ("tiledrgba3.exr", 512, 512, tw, th);
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cout << "writing tiled mipmap image with tile-size framebuffer" << endl;
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writeTiledRgbaMIP2 ("tiledrgba4.exr", 512, 512, tw, th);
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cout << "writing tiled ripmap image with image-size framebuffer" << endl;
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writeTiledRgbaRIP1 ("tiledrgba5.exr", 256, 256, tw, th);
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cout << "writing tiled ripmap image with tile-size framebuffer" << endl;
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writeTiledRgbaRIP2 ("tiledrgba6.exr", 256, 256, tw, th);
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cout << "reading tiled rgba file" << endl;
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readTiledRgba1 ("tiledrgba1.exr", pixels, w, h);
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}
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