wxSVGRect wxSVGLineElement::GetBBox(wxSVG_COORDINATES coordinates)
{
wxSVGPoint p1 = wxSVGPoint(GetX1().GetAnimVal(), GetY1().GetAnimVal());
wxSVGPoint p2 = wxSVGPoint(GetX2().GetAnimVal(), GetY2().GetAnimVal());
if (coordinates != wxSVG_COORDINATES_USER)
{
wxSVGMatrix matrix = GetMatrix(coordinates);
p1 = p1.MatrixTransform(matrix);
p2 = p2.MatrixTransform(matrix);
}
double x1 = p1.GetX();
double y1 = p1.GetY();
double x2 = p2.GetX();
double y2 = p2.GetY();
wxSVGRect bbox(x1, y1, x2 - x1, y2 - y1);
if (x1 > x2)
{
bbox.SetX(x2);
bbox.SetWidth(x1 - x2);
}
if (y1 > y2)
{
bbox.SetY(y2);
bbox.SetHeight(y1 - y2);
}
return bbox;
}
void wxSVGCtrlBase::MoveElement(wxSVGElement* elem, double Xposition, double Yposition) {
if (elem->GetDtd() == wxSVG_RECT_ELEMENT) {
double stroke_width = 0;
if (((wxSVGRectElement*)elem)->GetStroke().GetPaintType() != wxSVG_PAINTTYPE_NONE)
stroke_width = ((wxSVGRectElement*)elem)->GetStrokeWidth();
wxSVGMatrix CTM = ((wxSVGRectElement*)elem)->GetCTM();
double denom = CTM.GetB()*CTM.GetC() - CTM.GetA()*CTM.GetD();
double x = (CTM.GetC()*(Yposition-CTM.GetF()) - CTM.GetD()*(Xposition-CTM.GetE())) / denom;
double y = (CTM.GetB()*(Xposition-CTM.GetE()) - CTM.GetA()*(Yposition-CTM.GetF())) / denom;
wxSVGLength Xvalue(x + stroke_width / 2);
wxSVGLength Yvalue(y + stroke_width / 2);
((wxSVGRectElement*)elem)->SetX(Xvalue);
((wxSVGRectElement*)elem)->SetY(Yvalue);
} else {
wxSVGTransformable* element = wxSVGTransformable::GetSVGTransformable(*elem);
wxSVGMatrix CTM = element->GetCTM();
wxSVGTransformList transforms = element->GetTransform().GetBaseVal();
wxSVGMatrix matrix = transforms[(int)transforms.Count()-1].GetMatrix();
wxSVGRect bbox = element->GetResultBBox(wxSVG_COORDINATES_VIEWPORT);
wxSVGPoint LeftUp = wxSVGPoint(bbox.GetX(), bbox.GetY());
wxSVGMatrix new_matrix = wxSVGMatrix();
new_matrix = new_matrix.Translate(Xposition - LeftUp.GetX(), Yposition - LeftUp.GetY());
new_matrix = matrix.Multiply(CTM.Inverse().Multiply(new_matrix.Multiply(CTM)));
transforms[transforms.Count()-1].SetMatrix(new_matrix);
element->SetTransform(transforms);
}
}
wxSVGRect wxSVGEllipseElement::GetBBox(wxSVG_COORDINATES coordinates) {
if (coordinates == wxSVG_COORDINATES_USER)
return wxSVGRect(GetCx().GetBaseVal() - GetRx().GetBaseVal(), GetCy().GetBaseVal() - GetRy().GetBaseVal(),
2 * GetRx().GetBaseVal(), 2 * GetRy().GetBaseVal());
wxSVGMatrix matrix = GetMatrix(coordinates);
double angles[4];
angles[0] = atan((GetRy().GetBaseVal() * matrix.GetC()) / (GetRx().GetBaseVal() * matrix.GetA()));
angles[1] = atan((GetRy().GetBaseVal() * matrix.GetD()) / (GetRx().GetBaseVal() * matrix.GetB()));
angles[2] = angles[0] + pi;
angles[3] = angles[1] + pi;
wxSVGPointList points = wxSVGPointList();
for (int i = 0; i < 4; i++) {
points.Add(wxSVGPoint(GetRx().GetBaseVal() * cos(angles[i]) + GetCx().GetBaseVal(),
GetRy().GetBaseVal() * sin(angles[i]) + GetCy().GetBaseVal()));
}
wxSVGPoint p0 = points[0].MatrixTransform(matrix);
wxSVGRect bbox(p0.GetX(), p0.GetY(), 0, 0);
wxSVGPoint pi = wxSVGPoint();
for (int i = 1; i < (int) points.Count(); i++) {
pi = points[i].MatrixTransform(matrix);
if (bbox.GetX() > pi.GetX()) {
bbox.SetWidth(bbox.GetWidth() + bbox.GetX() - pi.GetX());
bbox.SetX(pi.GetX());
}
if (bbox.GetY() > pi.GetY()) {
bbox.SetHeight(bbox.GetHeight() + bbox.GetY() - pi.GetY());
bbox.SetY(pi.GetY());
}
if (bbox.GetX() + bbox.GetWidth() < pi.GetX())
bbox.SetWidth(pi.GetX() - bbox.GetX());
if (bbox.GetY() + bbox.GetHeight() < pi.GetY())
bbox.SetHeight(pi.GetY() - bbox.GetY());
}
return bbox;
}
wxSVGPoint wxSVGSVGElement::CreateSVGPoint() const {
return wxSVGPoint();
}