IntelliShapedImage.cpp

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#include "Image/IntelliShapedImage.h"
#include "IntelliHelper/IntelliHelper.h"
#include <QPainter>
#include <QRect>
#include <QDebug>
 
IntelliShapedImage::IntelliShapedImage(int weight, int height)
        : IntelliRasterImage(weight, height){
}
 
IntelliShapedImage::~IntelliShapedImage(){
 
}
 
QImage IntelliShapedImage::getDisplayable(int alpha){
        return getDisplayable(imageData.size(),alpha);
}
 
IntelliImage* IntelliShapedImage::getDeepCopy(){
        IntelliShapedImage* shaped = new IntelliShapedImage(imageData.width(), imageData.height());
        shaped->setPolygon(this->polygonData);
        shaped->imageData.fill(Qt::transparent);
        return shaped;
}
 
void IntelliShapedImage::calculateVisiblity(){
        if(polygonData.size()<=2) {
                QColor clr;
                for(int y=0; y<imageData.height(); y++) {
                        for(int x=0; x<imageData.width(); x++) {
                                clr = imageData.pixel(x,y);
                                clr.setAlpha(255);
                                imageData.setPixelColor(x,y,clr);
                        }
                }
                return;
        }
        QColor clr;
        for(int y=0; y<imageData.height(); y++) {
                for(int x=0; x<imageData.width(); x++) {
                        QPoint ptr(x,y);
                        clr = imageData.pixelColor(x,y);
                        bool isInPolygon = IntelliHelper::isInPolygon(triangles, ptr);
                        if(isInPolygon) {
                                clr.setAlpha(std::min(255, clr.alpha()));
                        }else{
                                clr.setAlpha(0);
                        }
                        imageData.setPixelColor(x,y,clr);
                }
        }
}
 
QImage IntelliShapedImage::getDisplayable(const QSize& displaySize, int alpha){
        QImage copy = imageData;
        for(int y = 0; y<copy.height(); y++) {
                for(int x = 0; x<copy.width(); x++) {
                        QColor clr = copy.pixelColor(x,y);
                        clr.setAlpha(std::min(alpha,clr.alpha()));
                        copy.setPixelColor(x,y, clr);
                }
        }
        return copy.scaled(displaySize,Qt::IgnoreAspectRatio);
}
 
void IntelliShapedImage::setPolygon(const std::vector<QPoint>& polygonData){
        if(polygonData.size()<3) {
                this->polygonData.clear();
        }else{
                this->polygonData.clear();
                for(auto element:polygonData) {
                        this->polygonData.push_back(QPoint(element.x(), element.y()));
                }
                triangles = IntelliHelper::calculateTriangles(polygonData);
        }
        calculateVisiblity();
        return;
}