A StrokingDataSelector is an interface to assist Painter to select correct LOD for rounded joins and caps when drawing rounded joins and caps. In addition it also informs Painter if stroking via arcs is possible with the stroking parameters. More...
#include <painter_stroke_shader.hpp>
Public Member Functions | |
| virtual bool | arc_stroking_possible (c_array< const uvec4 > data) const =0 |
| virtual float | compute_thresh (c_array< const uvec4 > data, float path_magnification, float curve_flatness) const =0 |
| virtual bool | data_compatible (c_array< const uvec4 > data) const =0 |
| virtual void | stroking_distances (c_array< const uvec4 > data, c_array< float > out_values) const =0 |
 Public Member Functions inherited from fastuidraw::reference_counted_base< T, Counter > | |
| reference_counted_base (void) | |
Additional Inherited Members | |
| Public Types inherited from fastuidraw::PathEnums | |
| enum | edge_type_t { starts_new_edge, continues_edge } |
| enum | path_geometry_inflation_index_t { pixel_space_distance = 0, item_space_distance, pixel_space_distance_miter_joins, item_space_distance_miter_joins, path_geometry_inflation_index_count } |
| 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 StrokingDataSelector is an interface to assist Painter to select correct LOD for rounded joins and caps when drawing rounded joins and caps. In addition it also informs Painter if stroking via arcs is possible with the stroking parameters.
Definition at line 48 of file painter_stroke_shader.hpp.
Member Function Documentation
◆ arc_stroking_possible()
|
pure virtual |
To be implemented by a derived class to specify if arc-stroking is possible with the stroking parameters.
- Parameters
-
data packed data to be sent to the shader
◆ compute_thresh()
|
pure virtual |
To be implemented by a derived class to compute the value used to select rounded join level of detail (StrokedPath::rounded_joins()) and rounded cap level of detail (StrokedPath::rounded_caps()).
- Parameters
-
data packed data to be sent to the shader path_magnification by how much the path is magnified from its native coordiantes to pixel coordinates. curve_flatness curve flatness
◆ data_compatible()
|
pure virtual |
To be implemented by a derived class to specify if the passed data is suitable for it.
- Parameters
-
data packed data to be sent to the shader
◆ stroking_distances()
|
pure virtual |
To be implemented by a derived class to give by how much the stroking gives thickness to the stroked path. These values are geometrically added together. The intersection test performed is to first inflate the bounding boxes in local coordinates by the output out_item_space_distance, then to convert the box to clip-coordinates and then push each clip-equation by *out_pixel_space_distance
- Parameters
-
data packed data to be sent to the shader [out] out_values output with array indexed as according to path_geometry_inflation_index_t
The documentation for this class was generated from the following file:
- /home/kevin/fastuidraw.krogueintel/inc/fastuidraw/painter/shader/painter_stroke_shader.hpp
