bool
get_path_storage(agg::path_storage& path, const control_point* points,
int32 count, bool closed)
{
if (count > 1) {
path.move_to(points[0].point.x, points[0].point.y);
for (int32 i = 1; i < count; i++) {
path.curve4(points[i - 1].point_out.x, points[i - 1].point_out.y,
points[i].point_in.x, points[i].point_in.y,
points[i].point.x, points[i].point.y);
}
if (closed) {
// curve from last to first control point
path.curve4(
points[count - 1].point_out.x, points[count - 1].point_out.y,
points[0].point_in.x, points[0].point_in.y,
points[0].point.x, points[0].point.y);
path.close_polygon();
}
return true;
}
return false;
}
void scene_renderer_t::convert_to_path( const shape_t& s, agg::path_storage& path, const Imath::V2i& offset, int subsample) const
{
path.remove_all();
Imath::V2f p0, p1, p2;
Imath::V2f shape_offset = s.offset();
Imath::M33f m( s.global_xform());
p0 = transform_point( s.triples()[0].p1(), shape_offset, m, subsample, offset);
path.move_to( p0.x, p0.y);
for( int i = 0; i < s.triples().size() - 1; ++i)
{
p2 = transform_point( s.triples()[i].p2(), shape_offset, m, subsample, offset);
p0 = transform_point( s.triples()[i+1].p0(), shape_offset, m, subsample, offset);
p1 = transform_point( s.triples()[i+1].p1(), shape_offset, m, subsample, offset);
path.curve4( p2.x, p2.y, p0.x, p0.y, p1.x, p1.y);
}
// last segment
p2 = transform_point( s.triples()[s.triples().size()-1].p2(), shape_offset, m, subsample, offset);
p0 = transform_point( s.triples()[0].p0(), shape_offset, m, subsample, offset);
p1 = transform_point( s.triples()[0].p1(), shape_offset, m, subsample, offset);
path.curve4( p2.x, p2.y, p0.x, p0.y, p1.x, p1.y);
path.close_polygon();
}
void ASSDrawEngine::AddDrawCmdToAGGPathStorage(DrawCmd* cmd, agg::path_storage& path, DRAWCMDMODE mode)
{
if (mode == HILITE && cmd->prev)
path.move_to(cmd->prev->m_point->x(), cmd->prev->m_point->y());
switch(cmd->type)
{
case M:
path.move_to(cmd->m_point->x(),cmd->m_point->y());
break;
case B:
if (cmd->initialized)
{
//path.move_to(cmd->prev->m_point->x(),cmd->prev->m_point->y());
PointList::iterator iterate = cmd->controlpoints.begin();
int x[2], y[2];
x[0] = (*iterate)->x();
y[0] = (*iterate)->y();
iterate++;
x[1] = (*iterate)->x();
y[1] = (*iterate)->y();
path.curve4(x[0], y[0], x[1], y[1], cmd->m_point->x(),cmd->m_point->y());
break;
}
case L:
if (mode == CTRL_LN)
path.move_to(cmd->m_point->x(),cmd->m_point->y());
else
path.line_to(cmd->m_point->x(),cmd->m_point->y());
break;
case S:
unsigned np = cmd->controlpoints.size();
agg::pod_array<double> m_polygon(np * 2);
unsigned _pn = 0;
PointList::iterator iterate = cmd->controlpoints.begin();
while (iterate != cmd->controlpoints.end())
{
m_polygon[_pn] = (*iterate)->x(); _pn++;
m_polygon[_pn] = (*iterate)->y(); _pn++;
iterate++;
}
//m_polygon[_pn++] = cmd->m_point->x();
//m_polygon[_pn++] = cmd->m_point->y();
//path.move_to(cmd->prev->m_point->x(),cmd->prev->m_point->y());
if (mode == CTRL_LN)
{
_pn = 0;
while (_pn < np * 2)
{
path.line_to((int) m_polygon[_pn],(int) m_polygon[_pn + 1]);
_pn += 2;
}
path.line_to(cmd->m_point->x(), cmd->m_point->y());
}
else
{
//path.line_to((int) m_polygon[0],(int) m_polygon[1]);
aggpolygon poly(&m_polygon[0], np, false, false);
agg::conv_bcspline<agg::simple_polygon_vertex_source> bspline(poly);
bspline.interpolation_step(0.01);
agg::path_storage npath;
npath.join_path(bspline);
path.join_path(npath);
if (mode == HILITE)
path.move_to((int) m_polygon[np * 2 - 2], (int) m_polygon[np * 2 - 1] );
path.line_to(cmd->m_point->x(), cmd->m_point->y());
}
break;
}
}