diff options
author | Chia-I Wu <[email protected]> | 2010-04-01 14:20:24 +0800 |
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committer | Chia-I Wu <[email protected]> | 2010-04-01 22:25:48 +0800 |
commit | fc3ddd4b566380e7684c780450016e3e191a4160 (patch) | |
tree | 539e4eb39fb89a9ebb83116deef9c5d5ebc57e4d /progs/egl/openvg/trivial/lingrad.c | |
parent | 7f231cab2b7c13ba70d6aa694f74b6d6eee6470f (diff) |
progs/openvg: Move OpenVG demos to a subdirectory of progs/egl.
That is, move
progs/openvg/demos to progs/egl/openvg,
progs/openvg/trivial to progs/egl/openvg/trivial.
Diffstat (limited to 'progs/egl/openvg/trivial/lingrad.c')
-rw-r--r-- | progs/egl/openvg/trivial/lingrad.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/progs/egl/openvg/trivial/lingrad.c b/progs/egl/openvg/trivial/lingrad.c new file mode 100644 index 00000000000..bcaad1f1015 --- /dev/null +++ b/progs/egl/openvg/trivial/lingrad.c @@ -0,0 +1,87 @@ +#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) +{ + static const VGubyte sqrCmds[5] = {VG_MOVE_TO_ABS, VG_HLINE_TO_ABS, VG_VLINE_TO_ABS, VG_HLINE_TO_ABS, VG_CLOSE_PATH}; + static const VGfloat sqrCoords[5] = {0.0f, 0.0f, 400.0f, 400.0f, 0.0f}; + + VGfloat rampStop[] = {0.00f, 1.0f, 1.0f, 1.0f, 1.0f, + 0.33f, 1.0f, 0.0f, 0.0f, 1.0f, + 0.66f, 0.0f, 1.0f, 0.0f, 1.0f, + 1.00f, 0.0f, 0.0f, 1.0f, 1.0f}; + VGfloat linearGradient[4] = {100.0f, 100.0f, 300.0f, 300.0f}; + + path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1, 0, 0, 0, + VG_PATH_CAPABILITY_APPEND_TO); + vgAppendPathData(path, 5, sqrCmds, sqrCoords); + + fill = vgCreatePaint(); + vgSetPaint(fill, VG_FILL_PATH); + + vgSetParameteri(fill, VG_PAINT_TYPE, VG_PAINT_TYPE_LINEAR_GRADIENT); + vgSetParameteri(fill, VG_PAINT_COLOR_RAMP_SPREAD_MODE, spread); + vgSetParameterfv(fill, VG_PAINT_LINEAR_GRADIENT, 4, linearGradient); + vgSetParameterfv(fill, VG_PAINT_COLOR_RAMP_STOPS, 20, rampStop); + + vgSetfv(VG_CLEAR_COLOR, 4, white_color); +} + +/* 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(400, 400); + + return run(argc, argv, init, reshape, + draw, 0); +} |