96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
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#include "eglcommon.h"
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#include <VG/openvg.h>
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#include <X11/keysym.h>
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#include <stdio.h>
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const VGfloat white_color[4] = {1.0, 1.0, 1.0, 1.0};
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const VGfloat color[4] = {0.4, 0.1, 1.0, 1.0};
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VGPath path;
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VGPaint fill;
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VGint cap_style = VG_CAP_BUTT;
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static void
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init(void)
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{
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static const VGubyte cmds[] = {VG_MOVE_TO_ABS,
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VG_LINE_TO_ABS,
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VG_LINE_TO_ABS
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};
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#if 1
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static const VGfloat coords[] = {100, 100, 150, 100,
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150, 200
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};
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#else
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static const VGfloat coords[] = {100, 20, 100, 220,
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};
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#endif
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VGfloat dash_pattern[2] = { 20.f, 20.f };
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path = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1, 0, 0, 0,
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VG_PATH_CAPABILITY_APPEND_TO);
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vgAppendPathData(path, 3, cmds, coords);
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fill = vgCreatePaint();
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vgSetParameterfv(fill, VG_PAINT_COLOR, 4, color);
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vgSetPaint(fill, VG_FILL_PATH);
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vgSetfv(VG_CLEAR_COLOR, 4, white_color);
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vgSetf(VG_STROKE_LINE_WIDTH, 20);
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vgSeti(VG_STROKE_CAP_STYLE, cap_style);
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vgSeti(VG_STROKE_JOIN_STYLE, VG_JOIN_ROUND);
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vgSetfv(VG_STROKE_DASH_PATTERN, 2, dash_pattern);
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vgSetf(VG_STROKE_DASH_PHASE, 0.0f);
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}
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/* new window size or exposure */
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static void
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reshape(int w, int h)
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{
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vgLoadIdentity();
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}
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static void
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draw(void)
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{
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vgClear(0, 0, window_width(), window_height());
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vgDrawPath(path, VG_STROKE_PATH);
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vgFlush();
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}
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static int key_press(unsigned key)
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{
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switch(key) {
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case XK_c:
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case XK_C:
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++cap_style;
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if (cap_style > VG_CAP_SQUARE)
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cap_style = VG_CAP_BUTT;
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switch(cap_style) {
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case VG_CAP_BUTT:
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fprintf(stderr, "Cap style 'butt'\n");
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break;
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case VG_CAP_ROUND:
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fprintf(stderr, "Cap style 'round'\n");
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break;
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case VG_CAP_SQUARE:
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fprintf(stderr, "Cap style 'square'\n");
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break;
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}
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vgSeti(VG_STROKE_CAP_STYLE, cap_style);
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break;
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default:
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break;
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}
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return VG_TRUE;
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}
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int main(int argc, char **argv)
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{
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return run(argc, argv, init, reshape,
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draw, key_press);
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}
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