本文整理汇总了C++中LineBuffer::bounds方法的典型用法代码示例。如果您正苦于以下问题：C++ LineBuffer::bounds方法的具体用法？C++ LineBuffer::bounds怎么用？C++ LineBuffer::bounds使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LineBuffer的用法示例。
在下文中一共展示了LineBuffer::bounds方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: ProcessArea
///////////////////////////////////////////////////////////////////////////////
// Called when applying an area style on a feature geometry. Area styles can
// can only be applied to polygon feature geometry types.
void SE_Renderer::ProcessArea(SE_ApplyContext* ctx, SE_RenderAreaStyle* style)
{
// the feature geometry we're applying the style on...
LineBuffer* featGeom = ctx->geometry;
// can't apply an area style to point and linestring geometry types
switch (featGeom->geom_type())
{
case GeometryType_Point:
case GeometryType_MultiPoint:
case GeometryType_LineString:
case GeometryType_MultiLineString:
case GeometryType_CurveString:
case GeometryType_MultiCurveString:
return;
}
SE_Matrix w2s;
GetWorldToScreenTransform(w2s);
//--------------------------------------------------------------
// special code to handle simple solid fill styles
//--------------------------------------------------------------
if (style->solidFill)
{
// just draw it and bail out of the layout function
SE_RenderPolygon* rp = (SE_RenderPolygon*)style->symbol[0];
if (m_bSelectionMode)
DrawScreenPolygon(featGeom, &w2s, m_selFillColor);
else
DrawScreenPolygon(featGeom, &w2s, rp->fill);
return;
}
// transform the feature geometry to rendering space
LineBuffer* xfgeom = LineBufferPool::NewLineBuffer(m_pPool, featGeom->point_count());
std::auto_ptr<LineBuffer> spLB(xfgeom);
*xfgeom = *featGeom;
int size = featGeom->point_count();
for (int i=0; i<size; ++i)
w2s.transform(xfgeom->x_coord(i), xfgeom->y_coord(i));
// recompute the bounds
RS_Bounds& bounds = const_cast<RS_Bounds&>(xfgeom->bounds());
bounds.minx = bounds.miny = bounds.minz = +DBL_MAX;
bounds.maxx = bounds.maxy = bounds.maxz = -DBL_MAX;
xfgeom->ComputeBounds(bounds);
// account for any viewport rotation
SE_AreaPositioning ap(xfgeom, style, GetWorldToScreenRotation());
double baserot = ap.PatternRotation();
SE_Matrix xform;
SE_Matrix xformbase = *ctx->xform;
xformbase.rotate(baserot);
for (const Point2D* pos = ap.NextLocation(); pos != NULL; pos = ap.NextLocation())
{
xform = xformbase;
xform.translate(pos->x, pos->y);
DrawSymbol(style->symbol, xform, baserot, style->addToExclusionRegion);
}
LineBufferPool::FreeLineBuffer(m_pPool, spLB.release());
}