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;
}