bool GiGraphics::drawQuadSplines(const GiContext* ctx, int count, const Point2d* ctlpts,
bool closed, bool modelUnit)
{
if (count < 3 || !ctlpts || isStopping())
return false;
const Box2d wndrect (DRAW_RECT(m_impl, modelUnit));
const Matrix2d matD(S2D(xf(), modelUnit));
Point2d mid, pt;
rawBeginPath();
for (int i = 0; i < (closed ? count : count - 2); i++) {
if (i == 0) {
pt = (closed ? (ctlpts[0] + ctlpts[1]) / 2 : ctlpts[0]) * matD;
rawMoveTo(pt.x, pt.y);
}
pt = ctlpts[(i+1) % count] * matD;
if (closed || i + 3 < count)
mid = (ctlpts[(i+1) % count] + ctlpts[(i+2) % count]) / 2 * matD;
else
mid = ctlpts[i+2] * matD;
rawQuadTo(pt.x, pt.y, mid.x, mid.y);
}
if (closed) {
rawClosePath();
}
return rawEndPath(ctx, closed);
}
bool GiGraphics::drawPath_(const GiContext* ctx, const MgPath& path, bool fill, const Matrix2d& matD)
{
int n = path.getCount();
if (n == 0 || isStopping())
return false;
const Point2d* pts = path.getPoints();
const char* types = path.getTypes();
Point2d ends, cp1, cp2;
bool matsame = matD.isIdentity();
rawBeginPath();
for (int i = 0; i < n; i++) {
switch (types[i] & ~kMgCloseFigure) {
case kMgMoveTo:
ends = matsame ? pts[i] : (pts[i] * matD);
rawMoveTo(ends.x, ends.y);
break;
case kMgLineTo:
ends = matsame ? pts[i] : (pts[i] * matD);
rawLineTo(ends.x, ends.y);
break;
case kMgBezierTo:
if (i + 2 >= n)
return false;
cp1 = matsame ? pts[i] : (pts[i] * matD);
cp2 = matsame ? pts[i+1] : (pts[i+1] * matD);
ends = matsame ? pts[i+2] : (pts[i+2] * matD);
rawBezierTo(cp1.x, cp1.y, cp2.x, cp2.y, ends.x, ends.y);
i += 2;
break;
case kMgQuadTo:
if (i + 1 >= n)
return false;
cp1 = matsame ? pts[i] : (pts[i] * matD);
ends = matsame ? pts[i+1] : (pts[i+1] * matD);
rawQuadTo(cp1.x, cp1.y, ends.x, ends.y);
i++;
break;
default:
return false;
}
if (types[i] & kMgCloseFigure)
rawClosePath();
}
return rawEndPath(ctx, fill);
}
bool GiGraphics::drawQuadSplines(const GiContext* ctx, int count,
const Point2d* ctlpts, bool modelUnit)
{
if (m_impl->drawRefcnt == 0 || count < 3 || ctlpts == NULL)
return false;
GiLock lock (&m_impl->drawRefcnt);
const Box2d wndrect (DRAW_RECT(m_impl, modelUnit));
const Matrix2d matD(S2D(xf(), modelUnit));
Point2d mid1, mid2, pt, pt2;
int n = 0;
rawBeginPath();
for (int i = 0; i + 2 < count; i++) {
if (Box2d(3, ctlpts + i).isIntersect(wndrect)) {
pt2 = ctlpts[i+2];
mid1 = (ctlpts[i] + ctlpts[i+1]) / 2 * matD;
mid2 = (ctlpts[i+1] + pt2) / 2 * matD;
if (n++ == 0) {
pt = ctlpts[i] * matD;
rawMoveTo(pt.x, pt.y);
rawLineTo(mid1.x, mid1.y);
}
pt = ctlpts[i+1] * matD;
rawQuadTo(pt.x, pt.y, mid2.x, mid2.y);
}
else if (n > 0) {
pt = pt2 * matD;
rawLineTo(pt.x, pt.y);
n = 0;
}
}
if (n > 0) {
pt = pt2 * matD;
rawLineTo(pt.x, pt.y);
}
return rawEndPath(ctx, false);
}