bool GiGraphics::drawRect(const GiContext* ctx, const Box2d& rect,
bool modelUnit)
{
if (rect.isEmpty() && ctx && m_impl->canvas) {
rawRect(ctx, 0, 0, 0, 0);
return false;
}
Point2d points[4] = {
rect.leftBottom(), rect.rightBottom(),
rect.rightTop(), rect.leftTop()
};
return !rect.isEmpty() && drawPolygon(ctx, 4, points, modelUnit);
}
bool GiGraphics::_drawPolygon(const GiContext* ctx, int count, const Point2d* points,
bool m2d, bool fill, bool edge, bool modelUnit)
{
GiContext context (ctx ? *ctx : m_impl->ctx);
if (!edge)
context.setNullLine();
if (!fill)
context.setNoFillColor();
if (context.isNullLine() && !context.hasFillColor())
return false;
vector<Point2d> pxpoints;
Point2d pt1, pt2;
Matrix2d matD(S2D(xf(), modelUnit));
pxpoints.resize(count);
Point2d *pxs = &pxpoints.front();
int n = 0;
for (int i = 0; i < count; i++) {
pt2 = points[i];
if (m2d)
pt2 *= matD;
if (i == 0 || count <= 4
|| fabsf(pt1.x - pt2.x) > 2
|| fabsf(pt1.y - pt2.y) > 2) {
pt1 = pt2;
pxs[n++] = pt1;
}
}
if (n == 4 && m2d
&& mgEquals(pxs[0].x, pxs[3].x) && mgEquals(pxs[1].x, pxs[2].x)
&& mgEquals(pxs[0].y, pxs[1].y) && mgEquals(pxs[2].y, pxs[3].y))
{
Box2d rc(pxs[0].x, pxs[0].y, pxs[2].x, pxs[2].y, true);
return rawRect(&context, rc.xmin, rc.ymin, rc.width(), rc.height());
}
return rawPolygon(&context, pxs, n);
}
