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#include "eglcommon.h"
#include <VG/openvg.h>
#include <stdio.h>
#include <string.h>
static const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
static VGPath path;
static VGPaint fill;
VGColorRampSpreadMode spread = VG_COLOR_RAMP_SPREAD_PAD;
static void
init(void)
{
VGubyte commands[5] = {VG_MOVE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS, VG_CLOSE_PATH};
VGfloat coords[8] = {0.0f,0.0f, 32.0f,0.0f, 32.0f,32.0f, 0.0f,32.0f };
VGfloat rampStop[20] = {-0.5f, 1.0f, 1.0f, 1.0f, 1.0f,
0.25f, 1.0f, 0.0f, 0.0f, 1.0f,
0.75f, 0.0f, 0.0f, 1.0f, 1.0f,
1.5f, 0.0f, 0.0f, 0.0f, 0.0f};
VGfloat defaultColor[] = {1.0f, 1.0f, 1.0f, 1.0f};
VGfloat linearGradient[4] = {0.0f, 0.0f, 0.0f, 32.0f};
path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F,
1.0f, 0.0f, 0, 0, VG_PATH_CAPABILITY_ALL);
if (path == VG_INVALID_HANDLE)
return;
fill = vgCreatePaint();
if (fill == VG_INVALID_HANDLE) {
vgDestroyPath(path);
return;
}
vgSetfv(VG_CLEAR_COLOR, 4, defaultColor);
vgSeti(VG_RENDERING_QUALITY, VG_RENDERING_QUALITY_NONANTIALIASED);
vgAppendPathData(path, 5, commands, coords);
vgSetPaint(fill, VG_FILL_PATH);
vgSetParameteri(fill, VG_PAINT_TYPE, VG_PAINT_TYPE_LINEAR_GRADIENT);
vgSetParameteri(fill, VG_PAINT_COLOR_RAMP_SPREAD_MODE,
VG_COLOR_RAMP_SPREAD_REPEAT);
vgSetParameterfv(fill, VG_PAINT_LINEAR_GRADIENT, 4, linearGradient);
vgSetParameterfv(fill, VG_PAINT_COLOR_RAMP_STOPS, 20, rampStop);
}
/* new window size or exposure */
static void
reshape(int w, int h)
{
vgLoadIdentity();
}
static void
draw(void)
{
vgClear(0, 0, window_width(), window_height());
vgDrawPath(path, VG_FILL_PATH);
vgFlush();
}
int main(int argc, char **argv)
{
if (argc > 1) {
const char *arg = argv[1];
if (!strcmp("-pad", arg))
spread = VG_COLOR_RAMP_SPREAD_PAD;
else if (!strcmp("-repeat", arg))
spread = VG_COLOR_RAMP_SPREAD_REPEAT;
else if (!strcmp("-reflect", arg))
spread = VG_COLOR_RAMP_SPREAD_REFLECT;
}
switch(spread) {
case VG_COLOR_RAMP_SPREAD_PAD:
printf("Using spread mode: pad\n");
break;
case VG_COLOR_RAMP_SPREAD_REPEAT:
printf("Using spread mode: repeat\n");
break;
case VG_COLOR_RAMP_SPREAD_REFLECT:
printf("Using spread mode: reflect\n");
}
set_window_size(200, 200);
return run(argc, argv, init, reshape,
draw, 0);
}
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