src/gallium/state_trackers/vega/polygon.h

   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