workbench/libs/mesa/src/gallium/state_trackers/vega/polygon.h

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  26
  27 #ifndef POLYGON_H
  28 #define POLYGON_H
  29
  30 #include "VG/openvg.h"
  31
  32 struct polygon;
  33 struct vg_context;
  34 struct vg_paint;
  35 struct array;
  36
  37 struct polygon *polygon_create(int size);
  38 struct polygon *polygon_create_from_data(float *data, int size);
  39 void            polygon_destroy(struct polygon *poly);
  40
  41 void            polygon_resize(struct polygon *poly, int new_size);
  42 int             polygon_size(struct polygon *poly);
  43
  44 int             polygon_vertex_count(struct polygon *poly);
  45 float *         polygon_data(struct polygon *poly);
  46
  47 void            polygon_vertex_append(struct polygon *p,
  48                                       float x, float y);
  49 void            polygon_append_polygon(struct polygon *dst,
  50                                        struct polygon *src);
  51 void            polygon_set_vertex(struct polygon *p, int idx,
  52                                    float x, float y);
  53 void            polygon_vertex(struct polygon *p, int idx,
  54                                float *vertex);
  55
  56 void            polygon_bounding_rect(struct polygon *p,
  57                                       float *rect);
  58 int             polygon_contains_point(struct polygon *p,
  59                                        float x, float y);
  60
  61 VGboolean       polygon_is_closed(struct polygon *p);
  62
  63 void polygon_fill(struct polygon *p, struct vg_context *pipe);
  64
  65 /* TODO: make a file/module around this struct
  66  */
  67 struct polygon_array {
  68    struct array *array;
  69    VGfloat min_x, max_x;
  70    VGfloat min_y, max_y;
  71 };
  72
  73 void polygon_array_fill(struct polygon_array *polyarray, struct vg_context *ctx);
  74
  75 #endif