void twin_composite_stroke (twin_pixmap_t *dst, twin_operand_t *src, twin_coord_t src_x, twin_coord_t src_y, twin_path_t *stroke, twin_fixed_t pen_width, twin_operator_t operator) { twin_path_t *pen = twin_path_create (); twin_path_t *path = twin_path_create (); twin_matrix_t m = twin_path_current_matrix (stroke); m.m[2][0] = 0; m.m[2][1] = 0; twin_path_set_matrix (pen, m); twin_path_set_cap_style (path, twin_path_current_cap_style (stroke)); twin_path_circle (pen, 0, 0, pen_width / 2); twin_path_convolve (path, stroke, pen); twin_composite_path (dst, src, src_x, src_y, path, operator); twin_path_destroy (path); twin_path_destroy (pen); }
static void twin_clock_hand (twin_clock_t *clock, twin_angle_t angle, twin_fixed_t len, twin_fixed_t fill_width, twin_fixed_t out_width, twin_argb32_t fill_pixel, twin_argb32_t out_pixel) { twin_path_t *stroke = twin_path_create (); twin_path_t *pen = twin_path_create (); twin_path_t *path = twin_path_create (); twin_matrix_t m; twin_clock_set_transform (clock, stroke); twin_path_rotate (stroke, angle); twin_path_move (stroke, D(0), D(0)); twin_path_draw (stroke, len, D(0)); m = twin_path_current_matrix (stroke); m.m[2][0] = 0; m.m[2][1] = 0; twin_path_set_matrix (pen, m); twin_path_set_matrix (path, m); twin_path_circle (pen, 0, 0, fill_width); twin_path_convolve (path, stroke, pen); twin_paint_path (_twin_clock_pixmap(clock), fill_pixel, path); twin_paint_stroke (_twin_clock_pixmap(clock), out_pixel, path, out_width); twin_path_destroy (path); twin_path_destroy (pen); twin_path_destroy (stroke); }
void twin_demo_start (twin_screen_t *screen, const char *name, int x, int y, int w, int h) { #if 0 twin_circletext_start (screen, x, y, w, h); #endif twin_line_start (screen, x += 20, y += 20, w, h); #if 0 twin_quickbrown_start (screen, x += 20, y += 20, w, h); twin_ascii_start (screen, x += 20, y += 20, w, h); twin_jelly_start (screen, x += 20, y += 20, w, h); #endif #if 0 #if 0 path = twin_path_create (); twin_path_rotate (path, -TWIN_ANGLE_45); twin_path_translate (path, D(10), D(2)); for (s = 0; s < 40; s++) { twin_path_rotate (path, TWIN_ANGLE_11_25 / 16); twin_path_scale (path, D(1.125), D(1.125)); twin_path_move (path, D(0), D(0)); twin_path_draw (path, D(1), D(0)); twin_path_draw (path, D(1), D(1)); twin_path_draw (path, D(0), D(1)); } twin_fill (alpha, 0x00000000, TWIN_SOURCE, 0, 0, w, h); twin_fill_path (alpha, path); source.source_kind = TWIN_SOLID; source.u.argb = 0xffff0000; mask.source_kind = TWIN_PIXMAP; mask.u.pixmap = alpha; twin_composite (red, 0, 0, &source, 0, 0, &mask, 0, 0, TWIN_OVER, w, h); #endif #if 0 path = twin_path_create (); stroke = twin_path_create (); twin_path_translate (stroke, D(62), D(62)); twin_path_scale (stroke,D(60),D(60)); for (s = 0; s < 60; s++) { twin_state_t save = twin_path_save (stroke); twin_angle_t a = s * TWIN_ANGLE_90 / 15; twin_path_rotate (stroke, a); twin_path_move (stroke, D(1), 0); if (s % 5 == 0) twin_path_draw (stroke, D(0.85), 0); else twin_path_draw (stroke, D(.98), 0); twin_path_restore (stroke, &save); } twin_path_convolve (path, stroke, pen); twin_fill (alpha, 0x00000000, TWIN_SOURCE, 0, 0, w, h); twin_fill_path (alpha, path); source.source_kind = TWIN_SOLID; source.u.argb = 0xffff0000; mask.source_kind = TWIN_PIXMAP; mask.u.pixmap = alpha; twin_composite (red, 0, 0, &source, 0, 0, &mask, 0, 0, TWIN_OVER, w, h); #endif #if 0 path = twin_path_create (); stroke = twin_path_create (); twin_path_translate (stroke, D(100), D(100)); twin_path_scale (stroke, D(10), D(10)); twin_path_move (stroke, D(0), D(0)); twin_path_draw (stroke, D(10), D(0)); twin_path_convolve (path, stroke, pen); twin_fill (alpha, 0x00000000, TWIN_SOURCE, 0, 0, w, h); twin_fill_path (alpha, path); source.source_kind = TWIN_SOLID; source.u.argb = 0xffff0000; mask.source_kind = TWIN_PIXMAP; mask.u.pixmap = alpha; twin_composite (red, 0, 0, &source, 0, 0, &mask, 0, 0, TWIN_OVER, w, h); #endif #if 1 path = twin_path_create (); stroke = twin_path_create (); twin_path_move (stroke, D (10), D (40)); twin_path_draw (stroke, D (40), D (40)); twin_path_draw (stroke, D (10), D (10)); twin_path_move (stroke, D (10), D (50)); twin_path_draw (stroke, D (40), D (50)); twin_path_convolve (path, stroke, pen); twin_path_destroy (stroke); twin_fill (alpha, 0x00000000, TWIN_SOURCE, 0, 0, w, h); twin_fill_path (alpha, path, 0, 0); source.source_kind = TWIN_SOLID; source.u.argb = 0xff00ff00; mask.source_kind = TWIN_PIXMAP; mask.u.pixmap = alpha; twin_composite (blue, 0, 0, &source, 0, 0, &mask, 0, 0, TWIN_OVER, 100, 100); twin_path_destroy (path); path = twin_path_create (); stroke = twin_path_create (); twin_path_move (stroke, D (50), D (50)); twin_path_curve (stroke, D (70), D (70), D (80), D (70), D (100), D (50)); twin_fill (alpha, 0x00000000, TWIN_SOURCE, 0, 0, w, h); twin_fill_path (alpha, stroke, 0, 0); source.source_kind = TWIN_SOLID; source.u.argb = 0xffff0000; mask.source_kind = TWIN_PIXMAP; mask.u.pixmap = alpha; twin_composite (blue, 0, 0, &source, 0, 0, &mask, 0, 0, TWIN_OVER, 100, 100); twin_path_convolve (path, stroke, pen); twin_fill (alpha, 0x00000000, TWIN_SOURCE, 0, 0, w, h); twin_fill_path (alpha, path, 0, 0); source.source_kind = TWIN_SOLID; source.u.argb = 0xff0000ff; mask.source_kind = TWIN_PIXMAP; mask.u.pixmap = alpha; twin_composite (blue, 0, 0, &source, 0, 0, &mask, 0, 0, TWIN_OVER, 100, 100); #endif twin_window_show (redw); twin_window_show (bluew); #endif }