46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
#ifndef TRIANGULATOR_SIMPLE_H_
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#define TRIANGULATOR_SIMPLE_H_
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#include <Eina.h>
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#include "efl/interfaces/efl_gfx_types.eot.h"
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typedef Efl_Gfx_Path_Command_Type Efl_Gfx_Path_Command;
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typedef struct _Triangulator_Simple Triangulator_Simple;
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struct _Triangulator_Simple
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{
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Eina_Inarray *vertices;
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Eina_Inarray *stops; //list of contours need to be drawn as separate triangle fan.
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float minx;
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float miny;
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float maxx;
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float maxy;
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};
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/**
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* Creates a new simple triangulator.
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*
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*/
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Triangulator_Simple * triangulator_simple_new(void);
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/**
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* Frees the given triangulator and any associated resource.
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*
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* st The given triangulator.
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*/
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void triangulator_simple_free(Triangulator_Simple *st);
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/**
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* Process the command list to generate triangle fans.
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* The alogrithm handles multiple contours by providing the list of stops.
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*
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* cmds : commnad list
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* pts : point list.
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* convex : shape is convex or not.
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*
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* output: If the shape is convex then, the triangle fan will exactly fill the shape. but if its not convex, it will overflow
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* to outside shape, in that case user has to use stencil method (2 pass drawing) to fill the shape.
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*/
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void triangulator_simple_process(Triangulator_Simple *st, const Efl_Gfx_Path_Command *cmds, const double *pts, Eina_Bool convex);
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#endif // #endif // TRIANGULATOR_SIMPLE_H_
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