src/gallium/state_trackers/vega/arc.h

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  26
  27 #ifndef ARC_H
  28 #define ARC_H
  29
  30 #include "VG/openvg.h"
  31
  32 struct polygon;
  33 struct matrix;
  34 struct stroker;
  35 struct path;
  36
  37 struct arc {
  38    VGPathSegment type;
  39
  40    VGfloat cx, cy;
  41
  42    VGfloat a, b;
  43
  44    VGfloat theta;
  45    VGfloat cos_theta, sin_theta;
  46
  47    VGfloat eta1;
  48    VGfloat eta2;
  49
  50    VGfloat x1, y1, x2, y2;
  51
  52    VGboolean is_valid;
  53 };
  54
  55 void arc_init(struct arc *arc,
  56               VGPathSegment type,
  57               VGfloat x1, VGfloat y1,
  58               VGfloat x2, VGfloat y2,
  59               VGfloat rh, VGfloat rv,
  60               VGfloat rot);
  61
  62 void arc_add_to_polygon(struct arc *arc,
  63                         struct polygon *poly,
  64                         struct matrix *matrix);
  65
  66
  67 void arc_to_path(struct arc *arc,
  68                  struct path *p,
  69                  struct matrix *matrix);
  70
  71 void arc_stroke_cb(struct arc *arc,
  72                    struct stroker *stroke,
  73                    struct matrix *matrix);
  74
  75 void arc_stroker_emit(struct arc *arc,
  76                       struct stroker *stroke,
  77                       struct matrix *matrix);
  78
  79
  80 #endif