// poly makes either a polygon or polyline
void poly(VGfloat * x, VGfloat * y, VGint n, VGbitfield flag) {
VGfloat points[n * 2];
VGPath path = newpath();
interleave(x, y, n, points);
vguPolygon(path, points, n, VG_FALSE);
vgDrawPath(path, flag);
vgDestroyPath(path);
}
void createPrimitives()
{
VGfloat points[] = {-30,-30, 30,-30, 0,30};
line = testCreatePath();
vguLine(line, -30,-30,30,30);
primitives[0] = line;
polyOpen = testCreatePath();
vguPolygon(polyOpen, points, 3, VG_FALSE);
primitives[1] = polyOpen;
polyClosed = testCreatePath();
vguPolygon(polyClosed, points, 3, VG_TRUE);
primitives[2] = polyClosed;
rect = testCreatePath();
vguRect(rect, -50,-30, 100,60);
primitives[3] = rect;
rectRound = testCreatePath();
vguRoundRect(rectRound, -50,-30, 100,60, 30,30);
primitives[4] = rectRound;
ellipse = testCreatePath();
vguEllipse(ellipse, 0,0, 100, 100);
primitives[5] = ellipse;
arcOpen = testCreatePath();
vguArc(arcOpen, 0,0, 100,60, 0, 270, VGU_ARC_OPEN);
primitives[6] = arcOpen;
arcChord = testCreatePath();
vguArc(arcChord, 0,0, 100,60, 0, 270, VGU_ARC_CHORD);
primitives[7] = arcChord;
arcPie = testCreatePath();
vguArc(arcPie, 0,0, 100,60, 0, 270, VGU_ARC_PIE);
primitives[8] = arcPie;
}
void PainterOpenVG::drawPolygon(size_t numPoints, const FloatPoint* points, VGbitfield specifiedPaintModes)
{
ASSERT(m_state);
VGbitfield paintModes = 0;
if (!m_state->strokeDisabled())
paintModes |= VG_STROKE_PATH;
if (!m_state->fillDisabled())
paintModes |= VG_FILL_PATH;
paintModes &= specifiedPaintModes;
if (!paintModes)
return;
m_surface->makeCurrent();
// Path segments: all points + "close path".
const VGint numSegments = numPoints + 1;
const VGint numCoordinates = numPoints * 2;
VGPath path = vgCreatePath(
VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
1.0 /* scale */, 0.0 /* bias */,
numSegments /* expected number of segments */,
numCoordinates /* expected number of total coordinates */,
VG_PATH_CAPABILITY_APPEND_TO);
ASSERT_VG_NO_ERROR();
Vector<VGfloat> vgPoints(numCoordinates);
for (int i = 0; i < numPoints; ++i) {
vgPoints[i*2] = points[i].x();
vgPoints[i*2 + 1] = points[i].y();
}
if (vguPolygon(path, vgPoints.data(), numPoints, VG_TRUE /* closed */) == VGU_NO_ERROR) {
vgDrawPath(path, paintModes);
ASSERT_VG_NO_ERROR();
}
vgDestroyPath(path);
ASSERT_VG_NO_ERROR();
}
