Functions | |
bool | GEOM_FADE2D::isSimplePolygon (std::vector< Segment2 > &vSegments) |
isSimplePolygon More... | |
void | GEOM_FADE2D::getDirectedEdges (std::vector< Triangle2 *> &vT, std::vector< Edge2 > &vDirectedEdgesOut) |
Get directed edge The directed edges of vT are returned vDirectedEdgesOut . Directed means that each edge (a,b) with two adjacent triangles in vT is returned twice, as edge(a,b) and edge(b,a). | |
void | GEOM_FADE2D::getUndirectedEdges (std::vector< Triangle2 *> &vT, std::vector< Edge2 > &vUndirectedEdgesOut) |
Get undirected edges. More... | |
bool | GEOM_FADE2D::fillHole (std::vector< std::pair< Segment2, Vector2 > > vPolygonSegments, bool bWithRefine, bool bVerbose, std::vector< Point2 > &vCornersOut) |
Fill a hole in a 3D mesh with triangles (deprecated) More... | |
void | GEOM_FADE2D::edgesToPolygons (std::vector< Edge2 > &vEdgesIn, std::vector< std::vector< Edge2 > > &vvPolygonsOut, std::vector< Edge2 > &vRemainingOut) |
Create polygons from a set of edges. More... | |
void | GEOM_FADE2D::getBorders (const std::vector< Triangle2 *> &vT, std::vector< Segment2 > &vBorderSegmentsOut) |
Get Borders. More... | |
bool | GEOM_FADE2D::sortRing (std::vector< Segment2 > &vRing) |
Sort a vector of Segments. More... | |
bool | GEOM_FADE2D::sortRingCCW (std::vector< Segment2 > &vRing) |
Sort a vector of Segments. More... | |
Orientation2 | GEOM_FADE2D::getOrientation2 (const Point2 *p0, const Point2 *p1, const Point2 *p2) |
Get the orientation of three points. More... | |
Orientation2 | GEOM_FADE2D::getOrientation2_mt (const Point2 *p0, const Point2 *p1, const Point2 *p2) |
Get Orientation2 (MT) More... | |
void GEOM_FADE2D::edgesToPolygons | ( | std::vector< Edge2 > & | vEdgesIn, |
std::vector< std::vector< Edge2 > > & | vvPolygonsOut, | ||
std::vector< Edge2 > & | vRemainingOut | ||
) |
A number of methods in Fade returns an unorganized set of edges that delimit a certain area. But sometimes it is more beneficial to have these edges organized as a set of one or more polygons. This is the purpose of the present method.
[in] | vEdgesIn | is a vector of oriented edges |
[out] | vvPolygonsOut | contains one vector<Edge2> for each polygon found in the input data. |
[out] | vRemainingOut | is used to return unusable remaining edges |
The present function adds one vector<Edge2> to vvPolygonsOut
for each polygon found in vEdgesIn
. Each such polygon starts with the leftmost vertex (and when two or more vertices share the smallest x-coordiante then the one of them with the smallest y-coordinate is chosen). Edges that do not form a closed polygon are returned in vRemainingOut
.
bool GEOM_FADE2D::fillHole | ( | std::vector< std::pair< Segment2, Vector2 > > | vPolygonSegments, |
bool | bWithRefine, | ||
bool | bVerbose, | ||
std::vector< Point2 > & | vCornersOut | ||
) |
This function was experimental and is now deprecated because 3D point cloud meshing has been moved to the WOF library.
[in] | vPolygonSegments | contains the segments of a closed, simple input polygon along with normal vectors. The segments are counterclockwise oriented and ordered with respect to the surface to be created. Check twice, the orientation is very important. The normal vectors point in the direction of the thought surface at the segment i.e., if a hole is filled, the normal vector of an adjecent triangle is taken but if a T-joint is filled the normal vector should be the average normal of the two triangles at the edge. |
[in] | bWithRefine | specifies if additional vertices shall be created. (bWithRefine=true is experimental, don't use currently) |
[in] | bVerbose | specifies if warnings shall be printed to stdout |
[out] | vCornersOut | contains the created fill triangles, 3 corners per triangle, counterclockwise oriented. |
void GEOM_FADE2D::getBorders | ( | const std::vector< Triangle2 *> & | vT, |
std::vector< Segment2 > & | vBorderSegmentsOut | ||
) |
Computes the border of the triangles in vT
. The border consists of all edges having only one adjacent triangle in vT.
[in] | vT | are the input triangles |
[out] | vBorderSegmentsOut | is used to return all border segments |
Orientation2 GEOM_FADE2D::getOrientation2 | ( | const Point2 * | p0, |
const Point2 * | p1, | ||
const Point2 * | p2 | ||
) |
This function returns the exact orientation of the points p0
, p1
, p2
Possible values are
ORIENTATION2_COLLINEAR if p0
, p1
, p2
are located on a line,
ORIENTATION2_CCW if p0
, p1
, p2
are counterclockwise oriented
ORIENTATION2_CW if p0
, p1
, p2
are clockwise oriented
Not thread-safe but a bit faster than the thread-safe version
Orientation2 GEOM_FADE2D::getOrientation2_mt | ( | const Point2 * | p0, |
const Point2 * | p1, | ||
const Point2 * | p2 | ||
) |
This version is thread-safe.
void GEOM_FADE2D::getUndirectedEdges | ( | std::vector< Triangle2 *> & | vT, |
std::vector< Edge2 > & | vUndirectedEdgesOut | ||
) |
A unique set of edges of vT
is returned.
bool GEOM_FADE2D::isSimplePolygon | ( | std::vector< Segment2 > & | vSegments | ) |
[in] | vSegments | specifies segments to be checked. Degenerate segments (0-length) are ignored. |
vSegments
contains a closed polygon without selfintersections. False otherwise. bool GEOM_FADE2D::sortRing | ( | std::vector< Segment2 > & | vRing | ) |
The segments in vRing are reoriented and sorted such that subsequent segments join at the endpoints.
bool GEOM_FADE2D::sortRingCCW | ( | std::vector< Segment2 > & | vRing | ) |
The segments in vRing are reoriented and sorted such that the resulting polygon is counterclockwise oriented and subsequent segments join at the endpoints.