bool Clipping::SutherlandHodgmanPolygonClip(Object* p){
auto &input = p->getNCoords();
Coordinates tmp;
clipLeft(input, tmp);
clipRight(tmp, input);
clipBottom(input, tmp);
clipTop(tmp, input);
return (input.size() != 0);
}
void BodyContour::clipBottom(int x, int& y, int imageHeight) const
{
clipBottom(x, y);
//clippedY can be outside the image
if(y < 0)
{
y = 0;
}
else if(y >= imageHeight)
{
y = imageHeight - 1;
}
}
bool Clipping::SutherlandHodgmanPolygonClip(Object* p){
auto input = p->getNCoords();
Coordinates tmp;
Coordinates output;
clipLeft(input, tmp);
clipRight(tmp, output);
clipTop(output, tmp);
clipBottom(tmp, output);
if(output.size() == 0)
return false;
p->setNCoord(output);
return true;
}
void Triangle2HeightField::clipTriangleAgainstHeightField(const osg::Vec2d& v1, const osg::Vec2d& v2, const osg::Vec2d& v3,
std::vector<osg::Vec2d>& result)
{
std::vector<osg::Vec2d>& in = result;
in.clear();
in.push_back(v1);
in.push_back(v2);
in.push_back(v3);
std::vector<osg::Vec2d> out;
clipRight(in, out, _heightField->getNumColumns()-1);
in.clear();
clipLeft(out, in, 0);
out.clear();
clipTop(in, out, _heightField->getNumRows()-1);
in.clear();
clipBottom(out, in, 0);
}
void BodyContour::draw() const
{
DECLARE_DEBUG_DRAWING("representation:BodyContour", "drawingOnImage");
DECLARE_DEBUG_DRAWING("representation:BodyContour:maxY", "drawingOnImage");
COMPLEX_DRAWING("representation:BodyContour",
{
for(std::vector<Line>::const_iterator i = lines.begin(); i != lines.end(); ++i)
LINE("representation:BodyContour", i->p1.x, i->p1.y, i->p2.x, i->p2.y, 1,
Drawings::ps_solid, ColorRGBA(255, 0, 255));
for(int x = 0; x < cameraResolution.x; x += 10)
{
int y = cameraResolution.y;
clipBottom(x, y);
LINE("representation:BodyContour", x, y, x, cameraResolution.y, 1,
Drawings::ps_solid, ColorRGBA(255, 0, 255));
}
});
bool Clipper::clip(Polygon &polygon, int clipFlagsOr, const DrawCall &draw)
{
if(clipFlagsOr & CLIP_FRUSTUM)
{
if(clipFlagsOr & CLIP_NEAR) clipNear(polygon);
if(polygon.n >= 3) {
if(clipFlagsOr & CLIP_FAR) clipFar(polygon);
if(polygon.n >= 3) {
if(clipFlagsOr & CLIP_LEFT) clipLeft(polygon);
if(polygon.n >= 3) {
if(clipFlagsOr & CLIP_RIGHT) clipRight(polygon);
if(polygon.n >= 3) {
if(clipFlagsOr & CLIP_TOP) clipTop(polygon);
if(polygon.n >= 3) {
if(clipFlagsOr & CLIP_BOTTOM) clipBottom(polygon);
}}}}}
}
return polygon.n >= 3;
}
