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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009 VMware, Inc.  All Rights Reserved.
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person obtaining a
  6.  * copy of this software and associated documentation files (the
  7.  * "Software"), to deal in the Software without restriction, including
  8.  * without limitation the rights to use, copy, modify, merge, publish,
  9.  * distribute, sub license, and/or sell copies of the Software, and to
  10.  * permit persons to whom the Software is furnished to do so, subject to
  11.  * the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the
  14.  * next paragraph) shall be included in all copies or substantial portions
  15.  * of the Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20.  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24.  *
  25.  **************************************************************************/
  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
  76.