fastuidraw::PathContour::interpolator_generic Class Reference

Interpolator generic implements tessellation by recursion and relying on analytic derivative provided by derived class. More...

#include <path.hpp>

Inheritance diagram for fastuidraw::PathContour::interpolator_generic:

Classes
class	tessellated_region

Public Member Functions
	interpolator_generic (PathContour &contour, const vec2 &end, enum PathEnums::edge_type_t tp)
virtual unsigned int	minimum_tessellation_recursion (void) const =0
virtual reference_counted_ptr< tessellation_state >	produce_tessellation (const TessellatedPath::TessellationParams &tess_params, TessellatedPath::SegmentStorage *out_data, float *out_max_distance) const
virtual void	tessellate (reference_counted_ptr< tessellated_region > in_region, reference_counted_ptr< tessellated_region > *out_regionA, reference_counted_ptr< tessellated_region > *out_regionB, vec2 *out_p) const =0
Public Member Functions inherited from fastuidraw::PathContour::interpolator_base
	interpolator_base (PathContour &contour, const vec2 &end, enum PathEnums::edge_type_t tp)
virtual enum return_code	add_to_builder (ShaderFilledPath::Builder *builder, float tol) const
virtual void	approximate_bounding_box (Rect *out_bb) const =0
virtual reference_counted_ptr< interpolator_base >	deep_copy (PathContour &contour) const =0
enum PathEnums::edge_type_t	edge_type (void) const
const vec2 &	end_pt (void) const
virtual bool	is_flat (void) const =0
const vec2 &	start_pt (void) const
Public Member Functions inherited from fastuidraw::reference_counted_base< T, Counter >
	reference_counted_base (void)

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

Interpolator generic implements tessellation by recursion and relying on analytic derivative provided by derived class.

Definition at line 249 of file path.hpp.

Constructor & Destructor Documentation

interpolator_generic()

fastuidraw::PathContour::interpolator_generic::interpolator_generic ( PathContour &  contour, const vec2 &  end, enum PathEnums::edge_type_t  tp  )

inline

Ctor.

Parameters

contour	PathContour to which the interpolator is added, the start point of the interpolator will be ending point of PathContour::prev_interpolator().
end	end point of the edge of this interpolator
tp	nature the edge represented by this interpolator_base

Definition at line 293 of file path.hpp.

Member Function Documentation

minimum_tessellation_recursion()

virtual unsigned int fastuidraw::PathContour::interpolator_generic::minimum_tessellation_recursion ( void  ) const

pure virtual

To be implemented by a derived class to return a reasonable lower bound on the needed number of times the edge should be cut in half in order to capture its shape.

Implemented in fastuidraw::PathContour::bezier.

produce_tessellation()

virtual reference_counted_ptr<tessellation_state> fastuidraw::PathContour::interpolator_generic::produce_tessellation ( const TessellatedPath::TessellationParams &  tess_params, TessellatedPath::SegmentStorage *  out_data, float *  out_max_distance  ) const

virtual

To be implemented by a derived class to produce the arc-tessellation from start_pt() to end_pt(). In addition, for recursive tessellation, returns the tessellation state to be queried for recursion depth and reused to refine the tessellation. If the tessellation routine is not recursive in nature, return nullptr.

Parameters

tess_params	tessellation parameters
out_data	location to which to write the tessellations
out_max_distance	location to which to write an upperbound for the distance between the curve and the tesseallation approximation.

Implements fastuidraw::PathContour::interpolator_base.

tessellate()

virtual void fastuidraw::PathContour::interpolator_generic::tessellate ( reference_counted_ptr< tessellated_region >  in_region, reference_counted_ptr< tessellated_region > *  out_regionA, reference_counted_ptr< tessellated_region > *  out_regionB, vec2 *  out_p  ) const

pure virtual

To be implemented by a derived to assist in recursive tessellation.

Parameters

in_region	region to divide in half, a nullptr value indicates that the region is the entire interpolator.
out_regionA	location to which to write the first half
out_regionB	location to which to write the second half
out_p	location to which to write the position of the point on the curve in the middle (with repsect to time) of in_region

Implemented in fastuidraw::PathContour::bezier.

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The documentation for this class was generated from the following file:

• /home/kevin/fastuidraw.krogueintel/inc/fastuidraw/path.hpp