progs/openvg/trivial/coord.c

   1 #include "eglcommon.h"
   2
   3 #include <VG/openvg.h>
   4
   5 const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
   6 const VGfloat color[4] = {0.4, 0.1, 1.0, 1.0};
   7
   8 VGPath path;
   9 VGPaint fill;
  10
  11
  12 static void
  13 init(void)
  14 {
  15    /* Absent VG_CLOSE_PATH */
  16    VGubyte commands[] = {VG_MOVE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS,
  17                          VG_MOVE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS};
  18    VGfloat clearColor[] = {1.0f, 1.0f, 1.0f, 1.0f};/* white color */
  19    VGfloat fillColor[] = {1.0f, 0.0f, 0.0f, 1.0f};/* red color */
  20    VGfloat coords[] = {-16.0f, -16.0f, 0.0f, -16.0f, 0.0f, 0.0f, -16.0f, 0.0f,
  21                        0.0f, 0.0f, 16.0f, 0.0f, 16.0f, 16.0f, 0.0f, 16.0f};
  22
  23    vgSetfv(VG_CLEAR_COLOR, 4, clearColor);
  24    vgSeti(VG_RENDERING_QUALITY, VG_RENDERING_QUALITY_NONANTIALIASED);
  25
  26    vgSeti(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE);
  27    vgLoadIdentity();
  28    vgTranslate(32.0f, 32.0f);
  29
  30    path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1.0f, 0.0f, 0, 0,
  31                        VG_PATH_CAPABILITY_ALL);
  32    if (path == VG_INVALID_HANDLE)
  33       return;
  34    fill = vgCreatePaint();
  35    if (fill == VG_INVALID_HANDLE) {
  36       vgDestroyPath(path);
  37       return;
  38    }
  39    vgAppendPathData(path, 8, commands, coords);
  40    vgSetPaint(fill, VG_FILL_PATH);
  41    vgSetParameterfv(fill, VG_PAINT_COLOR, 4, fillColor);
  42    vgSetParameteri(fill, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
  43 }
  44
  45 /* new window size or exposure */
  46 static void
  47 reshape(int w, int h)
  48 {
  49 }
  50
  51 static void
  52 draw(void)
  53 {
  54    vgClear(0, 0, window_width(), window_height());
  55    vgDrawPath(path, VG_FILL_PATH);
  56
  57    vgFlush();
  58 }
  59
  60
  61 int main(int argc, char **argv)
  62 {
  63    set_window_size(64, 64);
  64    return run(argc, argv, init, reshape,
  65               draw, 0);
  66 }