C++ (Cpp) cairo_mesh_pattern_curve_to Examples

Example #1

File: mesh-pattern-overlap.c Project: AZed/cairo

static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
    cairo_pattern_t *pattern;

    cairo_test_paint_checkered (cr);

    cairo_translate (cr, PAD, PAD);

    pattern = cairo_pattern_create_mesh ();

    cairo_mesh_pattern_begin_patch (pattern);

    cairo_mesh_pattern_move_to (pattern, 0, 0);
    cairo_mesh_pattern_curve_to (pattern,  30, -30, 60,  30, 100, 0);
    cairo_mesh_pattern_curve_to (pattern, 130, 140, 60, -40, 100, 100);
    cairo_mesh_pattern_curve_to (pattern,  60,  70, 30, 130,   0, 100);
    cairo_mesh_pattern_curve_to (pattern, -30, -40, 30, 140,   0, 0);

    cairo_mesh_pattern_set_corner_color_rgb (pattern, 0, 1, 0, 0);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 1, 0, 1, 0);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 2, 0, 0, 1);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 3, 1, 1, 0);

    cairo_mesh_pattern_end_patch (pattern);

    cairo_set_source (cr, pattern);
    cairo_paint (cr);
    cairo_pattern_destroy (pattern);

    return CAIRO_TEST_SUCCESS;
}

Example #2

File: mesh-pattern-transformed.c Project: Ashod/WinCairoRequirements

static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
    cairo_pattern_t *pattern;

    cairo_test_paint_checkered (cr);

    cairo_translate (cr, PAD, PAD);

    pattern = cairo_pattern_create_mesh ();

    cairo_mesh_pattern_begin_patch (pattern);

    cairo_mesh_pattern_move_to (pattern, 0, 0);
    cairo_mesh_pattern_curve_to (pattern, 30, -30,  60,  30, 100, 0);
    cairo_mesh_pattern_curve_to (pattern, 60,  30, 130,  60, 100, 100);
    cairo_mesh_pattern_curve_to (pattern, 60,  70,  30, 130,   0, 100);
    cairo_mesh_pattern_curve_to (pattern, 30,  70, -30,  30,   0, 0);

    cairo_mesh_pattern_set_corner_color_rgb (pattern, 0, 1, 0, 0);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 1, 0, 1, 0);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 2, 0, 0, 1);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 3, 1, 1, 0);

    cairo_mesh_pattern_end_patch (pattern);

    cairo_mesh_pattern_begin_patch (pattern);

    cairo_mesh_pattern_move_to (pattern, 50, 50);
    cairo_mesh_pattern_curve_to (pattern, 80, 20, 110, 80, 150, 50);

    cairo_mesh_pattern_curve_to (pattern, 110, 80, 180, 110, 150, 150);

    cairo_mesh_pattern_curve_to (pattern, 110, 120, 80, 180, 50, 150);

    cairo_mesh_pattern_curve_to (pattern, 80, 120, 20, 80, 50, 50);

    cairo_mesh_pattern_set_corner_color_rgba (pattern, 0, 1, 0, 0, 0.3);
    cairo_mesh_pattern_set_corner_color_rgb  (pattern, 1, 0, 1, 0);
    cairo_mesh_pattern_set_corner_color_rgba (pattern, 2, 0, 0, 1, 0.3);
    cairo_mesh_pattern_set_corner_color_rgb  (pattern, 3, 1, 1, 0);

    cairo_mesh_pattern_end_patch (pattern);

    cairo_scale (cr, .5, .5);

    cairo_set_source (cr, pattern);
    cairo_paint (cr);

    cairo_translate (cr, PAT_WIDTH, PAT_HEIGHT);
    cairo_translate (cr, PAT_WIDTH/2, PAT_HEIGHT/2);
    cairo_rotate (cr, M_PI/4);
    cairo_translate (cr, -PAT_WIDTH, -PAT_HEIGHT);
    cairo_set_source (cr, pattern);
    cairo_paint (cr);

    cairo_pattern_destroy (pattern);

    return CAIRO_TEST_SUCCESS;
}

Example #3

File: rb_cairo_pattern.c Project: jdlehman/rcairo

static VALUE
cr_mesh_pattern_curve_to (VALUE self,
                          VALUE x1, VALUE y1,
                          VALUE x2, VALUE y2,
                          VALUE x3, VALUE y3)
{
  cairo_pattern_t *pattern;

  pattern = _SELF (self);
  cairo_mesh_pattern_curve_to (pattern,
                               NUM2DBL (x1), NUM2DBL (y1),
                               NUM2DBL (x2), NUM2DBL (y2),
                               NUM2DBL (x3), NUM2DBL (y3));
  cr_pattern_check_status (pattern);
  return self;
}

Example #4

File: blur.c Project: qioixiy/notes

static void
patch_arc (cairo_pattern_t *pattern,
	   double x, double y,
	   double start, double end,
	   double radius,
	   double r, double g, double b, double a)
{
    double r_sin_A, r_cos_A;
    double r_sin_B, r_cos_B;
    double h;

    r_sin_A = radius * sin (start);
    r_cos_A = radius * cos (start);
    r_sin_B = radius * sin (end);
    r_cos_B = radius * cos (end);

    h = 4.0/3.0 * tan ((end - start) / 4.0);

    cairo_mesh_pattern_begin_patch (pattern);

    cairo_mesh_pattern_move_to (pattern, x, y);
    cairo_mesh_pattern_line_to (pattern,
				x + r_cos_A,
				y + r_sin_A);

    cairo_mesh_pattern_curve_to (pattern,
				 x + r_cos_A - h * r_sin_A,
				 y + r_sin_A + h * r_cos_A,
				 x + r_cos_B + h * r_sin_B,
				 y + r_sin_B - h * r_cos_B,
				 x + r_cos_B,
				 y + r_sin_B);

    cairo_mesh_pattern_line_to (pattern, x, y);

    cairo_mesh_pattern_set_corner_color_rgba (pattern, 0, r, g, b, a);
    cairo_mesh_pattern_set_corner_color_rgba (pattern, 1, r, g, b, 0);
    cairo_mesh_pattern_set_corner_color_rgba (pattern, 2, r, g, b, 0);
    cairo_mesh_pattern_set_corner_color_rgba (pattern, 3, r, g, b, a);

    cairo_mesh_pattern_end_patch (pattern);
}

Example #5

File: record-mesh.c Project: AZed/cairo

static cairo_pattern_t *
mesh (void)
{
    cairo_pattern_t *pattern;

    pattern = cairo_pattern_create_mesh ();

    cairo_mesh_pattern_begin_patch (pattern);

    cairo_mesh_pattern_move_to (pattern, 0, 0);
    cairo_mesh_pattern_curve_to (pattern, 30, -30,  60,  30, 100, 0);
    cairo_mesh_pattern_curve_to (pattern, 60,  30, 130,  60, 100, 100);
    cairo_mesh_pattern_curve_to (pattern, 60,  70,  30, 130,   0, 100);
    cairo_mesh_pattern_curve_to (pattern, 30,  70, -30,  30,   0, 0);

    cairo_mesh_pattern_set_corner_color_rgb (pattern, 0, 1, 0, 0);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 1, 0, 1, 0);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 2, 0, 0, 1);
    cairo_mesh_pattern_set_corner_color_rgb (pattern, 3, 1, 1, 0);

    cairo_mesh_pattern_end_patch (pattern);

    cairo_mesh_pattern_begin_patch (pattern);

    cairo_mesh_pattern_move_to (pattern, 50, 50);
    cairo_mesh_pattern_curve_to (pattern,  80,  20, 110,  80, 150, 50);
    cairo_mesh_pattern_curve_to (pattern, 110,  80, 180, 110, 150, 150);
    cairo_mesh_pattern_curve_to (pattern, 110, 120,  80, 180,  50, 150);
    cairo_mesh_pattern_curve_to (pattern,  80, 120,  20,  80,  50, 50);

    cairo_mesh_pattern_set_corner_color_rgba (pattern, 0, 1, 0, 0, 0.3);
    cairo_mesh_pattern_set_corner_color_rgb  (pattern, 1, 0, 1, 0);
    cairo_mesh_pattern_set_corner_color_rgba (pattern, 2, 0, 0, 1, 0.3);
    cairo_mesh_pattern_set_corner_color_rgb  (pattern, 3, 1, 1, 0);

    cairo_mesh_pattern_end_patch (pattern);

    return pattern;
}