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#include "cvimage.h"
using namespace std;
namespace Rotor {
//space out to 32 bit RGB padding for cairo
void Image::convert24(){
cv::cvtColor(rgb,rgb, CV_RGBA2RGB);
}
void Image::convert32(){
cv::cvtColor(rgb,rgb, CV_RGB2RGBA);
}
Image & Image::operator+=(const Image &other) {
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
}
else {
rgb+=other.rgb;
}
return *this;
}
Image & Image::operator*=(const Image &other) {
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot multiply images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
}
else {
//rgb/=other.rgb; //does funny glitchy stuff
//could use cv::Mat.mul() here
for (int i=0;i<w*h*3;i++){
//calculate with tables
rgb.data[i]=pixels.multiply[rgb.data[i]][other.rgb.data[i]];
}
}
return *this;
}
Image & Image::operator^=(const Image &other) {
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
}
else {
rgb^=other.rgb;
}
return *this;
}
Image & Image::add_wrap(const Image &other) {
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
}
else {
for (int i=0;i<w*h*3;i++){
//creates rainbow overload, openCV doesn't do this
rgb.data[i]=(unsigned char)(((int)other.rgb.data[i]+(int)rgb.data[i]));
}
}
return *this;
}
Image & Image::divide_wrap(const Image &other) {
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot add images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
}
else {
for (int i=0;i<w*h*3;i++){
//creates rainbow overload, openCV doesn't do this
rgb/=other.rgb; //does funny glitchy stuff
}
}
return *this;
}
//THIS OPENCV VERSION IS SLOWER THAN THE OLDSKOOL VERSION BELOW
Image & Image::alpha_blend_cv(const Image &other) {
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot blend images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
//why not??
}
else if (!other.alpha.data){
//default to full on alpha
rgb=other.rgb.clone();
}
else {
//overlay the other image based on its alpha values
//https://gist.github.com/Brick85/5009046 - this is a dumb way to do it?
//how to invert a matrix?
//'invert' is matrix invert - different
//subtract from a scalar (1) ?
vector<cv::Mat> ichans,ochans;
vector<cv::Mat> compchans;
cv::split(rgb,ichans);
cv::split(other.rgb,ochans);
uint8_t b=0xFF;
cv::Mat iA=b-other.alpha;
for (int i=0;i<3;i++) {
compchans.push_back(ichans[i].mul(iA,1.0/255.0)+ochans[i].mul(other.alpha,1.0/255.0));
}
merge(compchans,rgb);
//rgb+=other.rgb;
//for (int i=0;i<w*h*3;i++) {
// rgb.data[i]=(uint8_t)(((((int)rgb.data[i])*(0xFF-other.alpha.data[i/3]))>>8)+((((int)other.rgb.data[i])*((int)other.alpha.data[i/3]))>>8));
//}
}
return *this;
}
Image & Image::alpha_blend(const Image &other) {
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot blend images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
//why not??
}
else if (!other.alpha.data){
//default to full on alpha
rgb=other.rgb.clone();
}
else {
for (int i=0;i<w*h*3;i++) {
rgb.data[i]=(uint8_t)(((((int)rgb.data[i])*(0xFF-other.alpha.data[i/3]))>>8)+((((int)other.rgb.data[i])*((int)other.alpha.data[i/3]))>>8));
}
}
return *this;
}
Image & Image::alpha_merge(const Image &other) {
//converts the incoming image to monochrome and inserts it into the alpha channel of this image
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot merge alpha with different size! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
}
else {
cv::cvtColor(other.rgb,alpha,CV_RGB2GRAY);
}
return *this;
}
Image & Image::alpha_from_cv(cv::Mat &other){
//if (other.w!=w||other.h!=h) {
// cerr<<"Rotor: cannot merge alpha with different size! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
//}
//else {
if (other.channels()==1) {
alpha=other;
}
else cv::cvtColor(other,alpha,CV_RGB2GRAY);
//}
return *this;
}
Image & Image::overlay(cv::Mat &other){
if (other.w!=w||other.h!=h) {
cerr<<"Rotor: cannot overlay images with different sizes! (wanted "<<w<<"x"<<h<<", got "<<other.w<<"x"<<other.h<<")"<<endl;
//why not??
}
else {
for (int i=0;i<h*w*3;i++) {
rgb.data[i]=pixels.overlsy[rgb.data[i]][other.rgb.data[i]];
}
}
return *this;
}
Image & Image::operator=(const Image &other) {
//can be optimised? was trying to use other.data.clone()
setup(other.w,other.h);
//for (int i=0;i<h*w*3;i++) {
// rgb.data[i]=other.rgb.data[i];
//}
memcpy(rgb.data,other.rgb.data,h*w*3); //saves ~2.4 ms copying a 640x360 image
return *this;
}
//channel rearrangement
//RGBAZ - these are channels 0-4
//HSB - can also have these virtual channels 5-7
//convert channels- int outChannel[5] - {0,1,2,-5,4} - this mapping sends inverted brightness to alpha
//scalar operations allocate a new image.
//maybe this could not be the case if the data is owned by this image?
//need to look into auto_ptr
Image & Image::operator*=(const float &amount) {
//cerr<<"amount: "<<amount<<endl;
//rgb*=amount;
uint8_t amt=(uint8_t)(amount*255.0f);
for (int i=0;i<h*w*3;i++) {
rgb.data[i]=pixels.multiply[rgb.data[i]][amt];
}
//again this is faster
return *this;
}
Image & Image::operator+=(const float &amount) {
rgb+=(amount*255.0f);
return *this;
}
Image & Image::operator-=(const float &amount) {
rgb-=(amount*255.0f);
return *this;
}
Image & Image::operator/=(const float &amount) {
rgb/=amount;
return *this;
}
Image * Image::operator*(const float &amount) {
//LEAK!! even if the image is deleted!! opencv??
Image *other=new Image(w,h);
other->rgb=rgb*amount;
return other;
}
Image * Image::operator+(const float &amount) {
uint8_t amt=(uint8_t)(amount*255.0f);
Image *other=new Image(w,h);
other->rgb=rgb+amt;
return other;
}
Image * Image::operator-(const float &amount) {
uint8_t amt=(uint8_t)(amount*255.0f);
Image *other=new Image(w,h);
other->rgb=rgb-amt;
return other;
}
Image * Image::operator/(const float &amount) {
Image *other=new Image(w,h);
other->rgb=rgb/amount;
return other;
}
cv::Mat& Image::get_mipmap(int level){
if (mipmaps.find(level)!=mipmaps.end()) return mipmaps[level];
//levels start at 1
int nw=max(1.0,w/pow(2,level));
int nh=max(1.0,h/pow(2,level));
cv::Mat mip;;
cv::resize(rgb,mip,cv::Size(nw,nh),0,0,cv::INTER_AREA );
mipmaps[level]=mip;
return mipmaps[level];
}
}
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