void SCgContour::updateShape()
{
prepareGeometryChange();
mShape = QPainterPath();
// Generate control points to be used for path drawing
PointFVector points;
quint32 pointsSize = mPoints.size();
for (quint32 i = 0; i < pointsSize; i++)
{
QPointF p2 = mPoints[(i + 1) % pointsSize];
QPointF p1 = mPoints[i];
QVector2D dir(p2 - p1);
// In case two points are placed close to each other
// we need to adjust corner radius.
qreal cornerRadiusAdjusted = cornerRadius;
qreal dirLength = dir.length();
if(dirLength < cornerRadius * 2)
cornerRadiusAdjusted = dirLength / 2;
dir.normalize();
QPointF dv = dir.toPointF() * cornerRadiusAdjusted;
points.push_back(p1);
points.push_back(p1 + dv);
points.push_back(p2 - dv);
}
// Draw path using generated points
quint32 psz3 = pointsSize * 3;
for (quint32 i = 0; i < psz3; i += 3)
{
if (i == 0)
mShape.moveTo(points[i + 1]);
mShape.lineTo(points[i + 2]);
mShape.quadTo(points[(i + 3) % psz3], points[(i + 4) % psz3]);
}
mShape.closeSubpath();
mShapeNormal = mShape;
QPainterPathStroker path_stroker;
path_stroker.setWidth(SCgAlphabet::lineWidthForShape() + 2);
mShape = path_stroker.createStroke(mShape);
mLineShape = mShape;
mShape = mShapeNormal.united(mShape);
updateConnected();
update();
}
void SCgContour::updateShape()
{
prepareGeometryChange();
mShape = QPainterPath();
PointFVector points;
quint32 pointsSize = mPoints.size();
for (quint32 i = 0; i < pointsSize; i++)
{
QPointF p2 = mPoints[(i + 1) % pointsSize];
QPointF p1 = mPoints[i];
QVector2D dir(p2 - p1);
dir.normalize();
QPointF dv = dir.toPointF() * CONTOUR_CORNER_RADIUS;
points.push_back(p1);
points.push_back(p1 + dv);
points.push_back(p2 - dv);
}
// draw path
quint32 psz3 = pointsSize * 3;
for (quint32 i = 0; i < pointsSize; i++)
{
quint32 idx = i * 3;
if (i == 0)
mShape.moveTo(points[idx + 1]);
mShape.lineTo(points[idx + 2]);
mShape.quadTo(points[(idx + 3) % psz3], points[(idx + 4) % psz3]);
}
mShape.closeSubpath();
mShapeNormal = mShape;
QPainterPathStroker path_stroker;
//path_stroker.setJoinStyle(Qt::MiterJoin);
path_stroker.setWidth(SCgAlphabet::lineWidthForShape() + 2);
mShape = path_stroker.createStroke(mShape);
mLineShape = mShape;
mShape = mShapeNormal.united(mShape);
updateConnected();
update();
}
void CAggMemoryDC::Lines(
const PointFVector& pts,
const Color& clr,
const REAL width/*=1.0*/)
{
if (m_buf==0)
return;
unsigned count=pts.size()/2;
ATLASSERT(count>0);
ATLASSERT((float)count/2.0f>0);
pixel_format pixf(m_rbuf);
ren_base renb(pixf);
solid_renderer ren_solid(renb);
m_path.remove_all();
for(unsigned i=0; i<count; ++i)
{
m_path.move_to(pts[i*2].x, pts[i*2].y);
m_path.line_to(pts[i*2+1].x, pts[i*2+1].y);
}
typedef agg::conv_stroke<conv_path_trans_type> conv_stroke_outline;
conv_stroke_outline stroke(m_transpath);
stroke.width(width);
m_ras_aa.add_path(stroke);
ren_solid.color(agg::rgba8(clr.GetR(), clr.GetG(), clr.GetB(), clr.GetA()));
agg::render_scanlines(m_ras_aa, m_sl, ren_solid);
}
void SCgContour::setPoints(const PointFVector &points)
{
if (points.size() < 3)
return;
SCgPointObject::setPoints(points);
}
