1#include "eglcommon.h"
2
3#include <VG/openvg.h>
4
5#include <math.h>
6#include <stdlib.h>
7
8const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
9const VGfloat color[4] = {0.0, 0.0, 0.0, 1.0};
10
11VGPath path;
12VGPaint paint;
13
14static void
15init(void)
16{
17   VGfloat clearColor[] = {1.0f, 1.0f, 1.0f, 1.0f};/* white color */
18   VGfloat fillColor[] = {1.0f, 0.0f, 0.0f, 1.0f};/* red color */
19   static const VGubyte segments[4] = {VG_MOVE_TO_ABS,
20                                       VG_SCCWARC_TO_ABS,
21                                       VG_SCCWARC_TO_ABS,
22                                       VG_CLOSE_PATH};
23   VGfloat data[12];
24   const VGfloat cx = 0, cy=29, width=80, height=40;
25   const VGfloat hw = width * 0.5f;
26   const VGfloat hh = height * 0.5f;
27
28   data[0] = cx + hw;
29   data[1] = cy;
30   data[2] = hw;
31   data[3] = hh;
32   data[4] = 0;
33   data[5] = cx - hw;
34   data[6] = cy;
35   data[7] = hw;
36   data[8] = hh;
37   data[9] = 0;
38   data[10] = data[0];
39   data[11] = cy;
40
41   vgSetfv(VG_CLEAR_COLOR, 4, clearColor);
42   vgSeti(VG_RENDERING_QUALITY, VG_RENDERING_QUALITY_NONANTIALIASED);
43
44
45   path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
46                       1.0f, 0.0f, 0, 0, VG_PATH_CAPABILITY_ALL);
47   if (path == VG_INVALID_HANDLE) {
48      return;
49   }
50   paint = vgCreatePaint();
51   if (paint == VG_INVALID_HANDLE) {
52      vgDestroyPath(path);
53      return;
54   }
55
56   vgAppendPathData(path, 4, segments, data);
57   vgSetParameterfv(paint, VG_PAINT_COLOR, 4, fillColor);
58   vgSetParameteri( paint, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
59   vgSetPaint(paint, VG_FILL_PATH);
60}
61
62/* new window size or exposure */
63static void
64reshape(int w, int h)
65{
66}
67
68static void
69draw(void)
70{
71   vgClear(0, 0, window_width(), window_height());
72   vgLoadIdentity();
73   vgTranslate(50, 21);
74   vgDrawPath(path, VG_FILL_PATH);
75   vgFlush();
76}
77
78
79int main(int argc, char **argv)
80{
81   set_window_size(100, 100);
82   return run(argc, argv, init, reshape,
83              draw, 0);
84}
85