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Integrated Polygon Test

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Use calculate traingles and the isInPolygon with theese triangles, this is done because of performance reasons
This commit is contained in:
Sonaion
2019-12-18 16:32:11 +01:00
parent 21ade76563
commit 4953abc791
5 changed files with 150 additions and 22 deletions
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23
src/Image/IntelliShapedImage.cpp
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@@ -35,26 +35,18 @@ void IntelliShapedImage::calculateVisiblity(){
}
return;
}
QPoint A = polygonData[0];
QColor clr;
for(int y=0; y<imageData.height(); y++){
for(int x=0; x<imageData.width(); x++){
int cutNumeber=0;
for(int i=1; i<static_cast<int>(polygonData.size()-1); i++){
QPoint B = polygonData[static_cast<size_t>(i)];
QPoint C = polygonData[static_cast<size_t>(i+1)];
QPoint P(x,y);
cutNumeber+=IntelliHelper::isInTriangle(A,B,C,P);
}
if(cutNumeber%2==0){
clr = imageData.pixelColor(x,y);
clr.setAlpha(0);
imageData.setPixelColor(x,y,clr);
}else{
clr = imageData.pixelColor(x,y);
QPoint ptr(x,y);
clr = imageData.pixelColor(x,y);
bool isInPolygon = IntelliHelper::isInPolygon(triangles, ptr);
if(isInPolygon){
clr.setAlpha(std::min(255, clr.alpha()));
imageData.setPixelColor(x,y,clr);
}else{
clr.setAlpha(0);
}
imageData.setPixelColor(x,y,clr);
}
}
}
@@ -79,6 +71,7 @@ void IntelliShapedImage::setPolygon(const std::vector<QPoint>& polygonData){
for(auto element:polygonData){
this->polygonData.push_back(QPoint(element.x(), element.y()));
}
triangles = IntelliHelper::calculateTriangles(polygonData);
}
calculateVisiblity();
return;