bool MgEllipse::setCircle(const Point2d& center, float radius)
{
if (radius < _MGZERO)
return false;
Box2d rect(center, radius * 2, 0);
setRectWithAngle(rect.leftTop(), rect.rightBottom(), getAngle(), center);
return true;
}
void MgBaseRect::_transform(const Matrix2d& mat)
{
for (int i = 0; i < 4; i++)
_points[i] *= mat;
Box2d rect(getRect());
setRectWithAngle(rect.leftTop(), rect.rightBottom(), getAngle(), rect.center());
__super::_transform(mat);
}
void MgEllipse::setRadius(float rx, float ry)
{
rx = fabsf(rx);
ry = fabsf(ry);
if (ry < _MGZERO)
ry = rx;
Box2d rect(getCenter(), rx * 2, ry * 2);
setRectWithAngle(rect.leftTop(), rect.rightBottom(), getAngle(), getCenter());
}
bool MgBaseRect::_setHandlePoint(int index, const Point2d& pt, float)
{
if (getFlag(kMgSquare)) {
if (isCurve() && !isEmpty(_MGZERO)) {
float olddist = _getHandlePoint(index).distanceTo(getCenter());
transform(Matrix2d::scaling(pt.distanceTo(getCenter()) / olddist, getCenter()));
}
else {
Matrix2d mat(Matrix2d::rotation(-getAngle(), getCenter()));
Point2d pt2(pt * mat);
Box2d rect(getRect());
mgnear::moveRectHandle(rect, index, pt2);
if (4 == index || 6 == index) {
rect = Box2d(rect.center(), rect.height(), rect.height());
}
else {
rect = Box2d(rect.center(), rect.width(), rect.width());
}
setRectWithAngle(rect.leftTop(), rect.rightBottom(), getAngle(),
rect.center() * mat.inverse());
}
}
else {
int index2 = index / 4 * 4 + (index % 4 + 2) % 4;
Point2d corner(_getHandlePoint(index2));
Matrix2d mat(Matrix2d::rotation(-getAngle(), corner));
Box2d rect(_getHandlePoint(0) * mat, _getHandlePoint(2) * mat);
Point2d pt2(pt * mat);
mgnear::moveRectHandle(rect, index, pt2);
setRectWithAngle(rect.leftTop(), rect.rightBottom(), getAngle(), corner);
}
update();
return true;
}
void MgBaseRect::setRect2P(const Point2d& pt1, const Point2d& pt2)
{
setRectWithAngle(pt1, pt2, 0, pt1);
}
