A PartitionedTessellatedPath represents partitioning a TessellatedPath for quick computation of what TessellatedPath::segment intersect a region. More...
#include <partitioned_tessellated_path.hpp>
Classes | |
| class | Subset |
| A Subset represents a handle to a portion of a PartitionedTessellatedPath. The handle is invalid once the PartitionedTessellatedPath from which it comes goes out of scope. Do not save these handle values without also saving a handle of the PartitionedTessellatedPath from which they come. More... | |
| class | SubsetSelection |
Public Types | |
| typedef TessellatedPath::cap | cap |
| typedef TessellatedPath::join | join |
| typedef TessellatedPath::segment | segment |
| typedef TessellatedPath::segment_chain | segment_chain |
Public Member Functions | |
| PartitionedTessellatedPath (c_array< const segment_chain > chains, c_array< const join > joins, c_array< const cap > caps) | |
| c_array< const cap > | caps (void) const |
| bool | has_arcs (void) const |
| c_array< const join > | joins (void) const |
| unsigned int | number_subsets (void) const |
| Subset | root_subset (void) const |
| void | select_subsets (c_array< const vec3 > clip_equations, const float3x3 &clip_matrix_local, const vec2 &one_pixel_width, c_array< const float > geometry_inflation, bool select_miter_joins, SubsetSelection &dst) const |
| Subset | subset (unsigned int I) const |
 Public Member Functions inherited from fastuidraw::reference_counted_base< T, Counter > | |
| reference_counted_base (void) | |
Friends | |
| class | TessellatedPath |
Additional Inherited Members | |
| Static Public Member Functions inherited from fastuidraw::reference_counted_base< T, Counter > | |
| static void | add_reference (const reference_counted_base< T, Counter > *p) |
| static void | remove_reference (const reference_counted_base< T, Counter > *p) |
Detailed Description
A PartitionedTessellatedPath represents partitioning a TessellatedPath for quick computation of what TessellatedPath::segment intersect a region.
The partitioning creates reectangular regions of the source TessellatedPath that are disjoint. One side effect of that is that a TessellatedPath::segment value from the source TessellatedPath may be split into multiple TessellatedPath::segment values.
Definition at line 50 of file partitioned_tessellated_path.hpp.
Member Typedef Documentation
◆ cap
A cap is the same as found in TessellatedPath
Definition at line 72 of file partitioned_tessellated_path.hpp.
◆ join
A join is the same as found in TessellatedPath
Definition at line 67 of file partitioned_tessellated_path.hpp.
◆ segment
A segment is the same as found in TessellatedPath
Definition at line 57 of file partitioned_tessellated_path.hpp.
◆ segment_chain
A segment_chain is the same as found in TessellatedPath
Definition at line 62 of file partitioned_tessellated_path.hpp.
Constructor & Destructor Documentation
◆ PartitionedTessellatedPath()
| fastuidraw::PartitionedTessellatedPath::PartitionedTessellatedPath | ( | c_array< const segment_chain > | chains, |
| c_array< const join > | joins, | ||
| c_array< const cap > | caps | ||
| ) |
Constuct a PartitionedTessellatedPath from arrays of segment_chain, join and caps values. Values are -COPIED- from the passed arrays.
- Parameters
-
chains segment chain values to copy and partition joins join values to copy and partition caps cap values to copy and partition
Member Function Documentation
◆ caps()
Returns the caps of the path.
◆ has_arcs()
| bool fastuidraw::PartitionedTessellatedPath::has_arcs | ( | void | ) | const |
Returns true if any of the segment values of any of the segment_chain values of any of the Subset::segment_chains() has segment::m_type equal to TessellatedPath::arc_segment.
◆ joins()
Returns the joins of the path.
◆ number_subsets()
| unsigned int fastuidraw::PartitionedTessellatedPath::number_subsets | ( | void | ) | const |
Returns the number of Subset objects of the StrokedPath.
◆ root_subset()
| Subset fastuidraw::PartitionedTessellatedPath::root_subset | ( | void | ) | const |
Returns the root-subset of the StrokedPath, this is the Subset that includes the entire StrokedPath.
◆ select_subsets()
| void fastuidraw::PartitionedTessellatedPath::select_subsets | ( | c_array< const vec3 > | clip_equations, |
| const float3x3 & | clip_matrix_local, | ||
| const vec2 & | one_pixel_width, | ||
| c_array< const float > | geometry_inflation, | ||
| bool | select_miter_joins, | ||
| SubsetSelection & | dst | ||
| ) | const |
Given a set of clip equations in clip coordinates and a tranformation from local coordiante to clip coordinates, compute what Subset are not completely culled by the clip equations.
- Parameters
-
clip_equations array of clip equations clip_matrix_local 3x3 transformation from local (x, y, 1) coordinates to clip coordinates. one_pixel_width holds the size of a single pixel in normalized device coordinates geometry_inflation amount path geometry is inflated, array is indexed by the enumeration PathEnums::path_geometry_inflation_index_t select_miter_joins if true, when selecting what joins are in the area, enlarge the join footprint for if the joins are stroked as a type of miter join. [out] dst location to which to write the subset-selection.
◆ subset()
| Subset fastuidraw::PartitionedTessellatedPath::subset | ( | unsigned int | I | ) | const |
Return the named Subset object of the StrokedPath.
The documentation for this class was generated from the following file:
- /home/kevin/fastuidraw.krogueintel/inc/fastuidraw/partitioned_tessellated_path.hpp
