C++ (Cpp) _cairo_mono_scan_converter_add_polygon示例

示例#1

文件： cairo-boxes.c 项目： lxcypp/cario

cairo_status_t
_cairo_rasterise_polygon_to_boxes (cairo_polygon_t			*polygon,
				   cairo_fill_rule_t			 fill_rule,
				   cairo_boxes_t *boxes)
{
    struct cairo_box_renderer renderer;
    cairo_scan_converter_t *converter;
    cairo_int_status_t status;
    cairo_rectangle_int_t r;

    TRACE ((stderr, "%s: fill_rule=%d\n", __FUNCTION__, fill_rule));

    _cairo_box_round_to_rectangle (&polygon->extents, &r);
    converter = _cairo_mono_scan_converter_create (r.x, r.y,
						   r.x + r.width,
						   r.y + r.height,
						   fill_rule);
    status = _cairo_mono_scan_converter_add_polygon (converter, polygon);
    if (unlikely (status))
	goto cleanup_converter;

    renderer.boxes = boxes;
    renderer.base.render_rows = span_to_boxes;

    status = converter->generate (converter, &renderer.base);
cleanup_converter:
    converter->destroy (converter);
    return status;
}

示例#2

文件： cairo-traps.c 项目： Distrotech/cairo

cairo_int_status_t
_cairo_rasterise_polygon_to_traps (cairo_polygon_t			*polygon,
				   cairo_fill_rule_t			 fill_rule,
				   cairo_antialias_t			 antialias,
				   cairo_traps_t *traps)
{
    struct cairo_trap_renderer renderer;
    cairo_scan_converter_t *converter;
    cairo_int_status_t status;
    cairo_rectangle_int_t r;

    TRACE ((stderr, "%s: fill_rule=%d, antialias=%d\n",
	    __FUNCTION__, fill_rule, antialias));
    assert(antialias == CAIRO_ANTIALIAS_NONE);

    renderer.traps = traps;
    renderer.base.render_rows = span_to_traps;

    _cairo_box_round_to_rectangle (&polygon->extents, &r);
    converter = _cairo_mono_scan_converter_create (r.x, r.y,
						   r.x + r.width,
						   r.y + r.height,
						   fill_rule);
    status = _cairo_mono_scan_converter_add_polygon (converter, polygon);
    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
	status = converter->generate (converter, &renderer.base);
    converter->destroy (converter);
    return status;
}

示例#3

文件： cairo-spans-compositor.c 项目： AlexShiLucky/luapower-all

static cairo_int_status_t
composite_polygon (const cairo_spans_compositor_t	*compositor,
		   cairo_composite_rectangles_t		 *extents,
		   cairo_polygon_t			*polygon,
		   cairo_fill_rule_t			 fill_rule,
		   cairo_antialias_t			 antialias)
{
    cairo_abstract_span_renderer_t renderer;
    cairo_scan_converter_t *converter;
    cairo_bool_t needs_clip;
    cairo_int_status_t status;

    if (extents->is_bounded)
	needs_clip = extents->clip->path != NULL;
    else
	needs_clip = !_clip_is_region (extents->clip) || extents->clip->num_boxes > 1;
    TRACE ((stderr, "%s - needs_clip=%d\n", __FUNCTION__, needs_clip));
    if (needs_clip) {
	TRACE ((stderr, "%s: unsupported clip\n", __FUNCTION__));
	return CAIRO_INT_STATUS_UNSUPPORTED;
	converter = _cairo_clip_tor_scan_converter_create (extents->clip,
							   polygon,
							   fill_rule, antialias);
    } else {
	const cairo_rectangle_int_t *r = &extents->unbounded;

	if (antialias == CAIRO_ANTIALIAS_FAST) {
	    converter = _cairo_tor22_scan_converter_create (r->x, r->y,
							    r->x + r->width,
							    r->y + r->height,
							    fill_rule, antialias);
	    status = _cairo_tor22_scan_converter_add_polygon (converter, polygon);
	} else if (antialias == CAIRO_ANTIALIAS_NONE) {
	    converter = _cairo_mono_scan_converter_create (r->x, r->y,
							   r->x + r->width,
							   r->y + r->height,
							   fill_rule);
	    status = _cairo_mono_scan_converter_add_polygon (converter, polygon);
	} else {
	    converter = _cairo_tor_scan_converter_create (r->x, r->y,
							  r->x + r->width,
							  r->y + r->height,
							  fill_rule, antialias);
	    status = _cairo_tor_scan_converter_add_polygon (converter, polygon);
	}
    }
    if (unlikely (status))
	goto cleanup_converter;

    status = compositor->renderer_init (&renderer, extents,
					antialias, needs_clip);
    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
	status = converter->generate (converter, &renderer.base);
    compositor->renderer_fini (&renderer, status);

cleanup_converter:
    converter->destroy (converter);
    return status;
}

示例#4

文件： cairo-spans-compositor.c 项目： mrobinson/cairo

static cairo_int_status_t
composite_polygon (const cairo_spans_compositor_t	*compositor,
		   cairo_composite_rectangles_t		 *extents,
		   cairo_polygon_t			*polygon,
		   cairo_fill_rule_t			 fill_rule,
		   cairo_antialias_t			 antialias)
{
    cairo_abstract_span_renderer_t renderer;
    cairo_scan_converter_t *converter;
    cairo_bool_t needs_clip;
    cairo_int_status_t status;

    needs_clip = composite_needs_clip (extents, &polygon->extents);
    if (needs_clip) {
	return CAIRO_INT_STATUS_UNSUPPORTED;
	converter = _cairo_clip_tor_scan_converter_create (extents->clip,
							   polygon,
							   fill_rule, antialias);
    } else {
	const cairo_rectangle_int_t *r = &extents->bounded;

	if (antialias == CAIRO_ANTIALIAS_FAST) {
	    converter = _cairo_tor22_scan_converter_create (r->x, r->y,
							    r->x + r->width,
							    r->y + r->height,
							    fill_rule, antialias);
	    status = _cairo_tor22_scan_converter_add_polygon (converter, polygon);
	} else if (antialias == CAIRO_ANTIALIAS_NONE) {
	    converter = _cairo_mono_scan_converter_create (r->x, r->y,
							   r->x + r->width,
							   r->y + r->height,
							   fill_rule);
	    status = _cairo_mono_scan_converter_add_polygon (converter, polygon);
	} else {
	    converter = _cairo_tor_scan_converter_create (r->x, r->y,
							  r->x + r->width,
							  r->y + r->height,
							  fill_rule, antialias);
	    status = _cairo_tor_scan_converter_add_polygon (converter, polygon);
	}
    }
    if (unlikely (status))
	goto cleanup_converter;

    status = compositor->renderer_init (&renderer, extents, needs_clip);
    if (likely (status == CAIRO_INT_STATUS_SUCCESS))
	status = converter->generate (converter, &renderer.base);
    compositor->renderer_fini (&renderer, status);

cleanup_converter:
    converter->destroy (converter);
    return status;
}