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https://github.com/SoftFever/OrcaSlicer.git
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2ae2672ee9
Fixing dep build script on Windows and removing some warnings. Use bundled igl by default. Not building with the dependency scripts if not explicitly stated. This way, it will stay in Fix the libigl patch to include C source files in header only mode.
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2014 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include "texture_from_png.h"
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#include "../opengl/report_gl_error.h"
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#include <igl_stb_image.h>
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IGL_INLINE bool igl::png::texture_from_png(const std::string png_file, const bool flip, GLuint & id)
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{
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int width,height,n;
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unsigned char *data = igl::stbi_load(png_file.c_str(), &width, &height, &n, 4);
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if(data == NULL) {
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return false;
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}
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// Why do I need to flip?
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/*if(flip)
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{
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yimg.flip();
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}*/
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glGenTextures(1, &id);
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glBindTexture(GL_TEXTURE_2D, id);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexImage2D(
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GL_TEXTURE_2D, 0, GL_RGB,
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width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
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glBindTexture(GL_TEXTURE_2D, 0);
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igl::stbi_image_free(data);
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return true;
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}
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IGL_INLINE bool igl::png::texture_from_png(const std::string png_file, GLuint & id)
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{
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return texture_from_png(png_file,false,id);
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}
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IGL_INLINE bool igl::png::texture_from_png(
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const std::string png_file,
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Eigen::Matrix<unsigned char,Eigen::Dynamic,Eigen::Dynamic>& R,
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Eigen::Matrix<unsigned char,Eigen::Dynamic,Eigen::Dynamic>& G,
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Eigen::Matrix<unsigned char,Eigen::Dynamic,Eigen::Dynamic>& B,
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Eigen::Matrix<unsigned char,Eigen::Dynamic,Eigen::Dynamic>& A
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)
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{
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int width,height,n;
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unsigned char *data = igl::stbi_load(png_file.c_str(), &width, &height, &n, 4);
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if(data == NULL) {
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return false;
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}
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R.resize(height,width);
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G.resize(height,width);
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B.resize(height,width);
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A.resize(height,width);
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for (unsigned j=0; j<height; ++j) {
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for (unsigned i=0; i<width; ++i) {
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// used to flip with libPNG, but I'm not sure if
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// simply j*width + i wouldn't be better
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// stb_image uses horizontal scanline an starts top-left corner
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R(i,j) = data[4*( (width-1-i) + width * (height-1-j) )];
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G(i,j) = data[4*( (width-1-i) + width * (height-1-j) ) + 1];
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B(i,j) = data[4*( (width-1-i) + width * (height-1-j) ) + 2];
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//A(i,j) = data[4*( (width-1-i) + width * (height-1-j) ) + 3];
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}
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}
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igl::stbi_image_free(data);
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return true;
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}
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