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143 lines (119 loc) · 5.26 KB
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/********************************************************************************
* Copyright (C) 2015 by Simon Wendsche *
* *
* This file is part of NormalmapGenerator. *
* *
* NormalmapGenerator is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* NormalmapGenerator is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
* Sourcecode: https://github.com/Theverat/NormalmapGenerator *
********************************************************************************/
#include "intensitymap.h"
#include <QColor>
#include <iostream>
IntensityMap::IntensityMap() {
}
IntensityMap::IntensityMap(int width, int height) {
map = std::vector< std::vector<double> >(height, std::vector<double>(width, 0.0));
}
IntensityMap::IntensityMap(const QImage& rgbImage, Mode mode, double redMultiplier, double greenMultiplier,
double blueMultiplier, double alphaMultiplier)
{
map = std::vector< std::vector<double> >(rgbImage.height(), std::vector<double>(rgbImage.width(), 0.0));
#pragma omp parallel for
//for every row of the image
for(int y = 0; y < rgbImage.height(); y++) {
//for every column of the image
for(int x = 0; x < rgbImage.width(); x++) {
double intensity = 0.0;
const double r = QColor(rgbImage.pixel(x, y)).redF() * redMultiplier;
const double g = QColor(rgbImage.pixel(x, y)).greenF() * greenMultiplier;
const double b = QColor(rgbImage.pixel(x, y)).blueF() * blueMultiplier;
const double a = QColor(rgbImage.pixel(x, y)).alphaF() * alphaMultiplier;
if(mode == AVERAGE) {
//take the average out of all selected channels
int num_channels = 0;
if(redMultiplier != 0.0) {
intensity += r;
num_channels++;
}
if(greenMultiplier != 0.0) {
intensity += g;
num_channels++;
}
if(blueMultiplier != 0.0) {
intensity += b;
num_channels++;
}
if(alphaMultiplier != 0.0) {
intensity += a;
num_channels++;
}
if(num_channels != 0)
intensity /= num_channels;
else
intensity = 0.0;
}
else if(mode == MAX) {
//take the maximum out of all selected channels
const double tempMaxRG = std::max(r, g);
const double tempMaxBA = std::max(b, a);
intensity = std::max(tempMaxRG, tempMaxBA);
}
//add resulting pixel intensity to intensity map
this->map.at(y).at(x) = intensity;
}
}
}
double IntensityMap::at(int x, int y) const {
return this->map.at(y).at(x);
}
double IntensityMap::at(int pos) const {
const int x = pos % this->getWidth();
const int y = pos / this->getWidth();
return this->at(x, y);
}
void IntensityMap::setValue(int x, int y, double value) {
this->map.at(y).at(x) = value;
}
void IntensityMap::setValue(int pos, double value) {
const int x = pos % this->getWidth();
const int y = pos / this->getWidth();
this->map.at(y).at(x) = value;
}
size_t IntensityMap::getWidth() const {
return this->map.at(0).size();
}
size_t IntensityMap::getHeight() const {
return this->map.size();
}
void IntensityMap::invert() {
#pragma omp parallel for
for(size_t y = 0; y < this->getHeight(); y++) {
for(size_t x = 0; x < this->getWidth(); x++) {
const double inverted = 1.0 - this->map.at(y).at(x);
this->map.at(y).at(x) = inverted;
}
}
}
QImage IntensityMap::convertToQImage() const {
QImage result(this->getWidth(), this->getHeight(), QImage::Format_ARGB32);
for(size_t y = 0; y < this->getHeight(); y++) {
QRgb *scanline = (QRgb*) result.scanLine(y);
for(size_t x = 0; x < this->getWidth(); x++) {
const int c = 255 * map.at(y).at(x);
scanline[x] = qRgba(c, c, c, 255);
}
}
return result;
}