diff options
author | Zack Rusin <zackr@vmware.com> | 2009-05-01 12:41:38 -0400 |
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committer | Zack Rusin <zackr@vmware.com> | 2009-05-01 12:51:59 -0400 |
commit | 544dd4b11f7be76bb00fe29a60eaf2772dcc69ca (patch) | |
tree | 5aafdef60cc47ba38dd3aa1de57322d257093f7a /progs/openvg/trivial/star-oddeven.c | |
parent | fbceedd2dee967b426ee187205941c6506769ea5 (diff) |
OpenVG 1.0 State Tracker
Import of the OpenVG 1.0 state tracker for Gallium.
Diffstat (limited to 'progs/openvg/trivial/star-oddeven.c')
-rw-r--r-- | progs/openvg/trivial/star-oddeven.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/progs/openvg/trivial/star-oddeven.c b/progs/openvg/trivial/star-oddeven.c new file mode 100644 index 00000000000..17311cf720a --- /dev/null +++ b/progs/openvg/trivial/star-oddeven.c @@ -0,0 +1,102 @@ +#include "eglcommon.h" + +#include <VG/openvg.h> + +const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0}; +const VGfloat green_color[4] = {0.0, 1.0, 0.0, 0.8}; +const VGfloat black_color[4] = {0.0, 0.0, 0.0, 1.0}; + +VGPath path; +VGPaint fill; + + +static void draw_point(VGfloat x, VGfloat y) +{ + + static const VGubyte cmds[] = {VG_MOVE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS, + VG_LINE_TO_ABS, VG_CLOSE_PATH}; + const VGfloat coords[] = { x - 2, y - 2, + x + 2, y - 2, + x + 2, y + 2, + x - 2, y + 2}; + VGPath path; + VGPaint fill; + + path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1, 0, 0, 0, + VG_PATH_CAPABILITY_ALL); + vgAppendPathData(path, 5, cmds, coords); + + fill = vgCreatePaint(); + vgSetParameterfv(fill, VG_PAINT_COLOR, 4, black_color); + vgSetPaint(fill, VG_FILL_PATH); + + vgDrawPath(path, VG_FILL_PATH); + + vgDestroyPath(path); + vgDestroyPaint(fill); +} + +static void draw_marks(VGPath path) +{ + VGfloat point[2], tangent[2]; + int i = 0; + + for (i = 0; i < 1300; i += 50) { + vgPointAlongPath(path, 0, 6, i, + point + 0, point + 1, + tangent + 0, tangent + 1); + draw_point(point[0], point[1]); + } +} + +static void +init(void) +{ + static const VGubyte cmds[6] = {VG_MOVE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS, VG_LINE_TO_ABS, + VG_LINE_TO_ABS, VG_CLOSE_PATH}; + static const VGfloat coords[] = { 0, 200, + 300, 200, + 50, 0, + 150, 300, + 250, 0}; + path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1, 0, 0, 0, + VG_PATH_CAPABILITY_ALL); + vgAppendPathData(path, 6, cmds, coords); + + fill = vgCreatePaint(); + vgSetParameterfv(fill, VG_PAINT_COLOR, 4, green_color); + vgSetPaint(fill, VG_FILL_PATH); + + vgSetfv(VG_CLEAR_COLOR, 4, white_color); +} + +/* new window size or exposure */ +static void +reshape(int w, int h) +{ + vgLoadIdentity(); +} + +static void +draw(void) +{ + VGfloat point[2], tangent[2]; + int i = 0; + + vgClear(0, 0, window_width(), window_height()); + + vgSetPaint(fill, VG_FILL_PATH); + vgDrawPath(path, VG_FILL_PATH); + + draw_marks(path); + + + vgFlush(); +} + + +int main(int argc, char **argv) +{ + return run(argc, argv, init, reshape, + draw, 0); +} |