Ejemplos de _cairo_polygon_grow en C++ (Cpp)

Ejemplo n.º 1

Archivo: cairo-polygon.c Proyecto: 3oyka/cairo2

static void
_cairo_polygon_add_edge (cairo_polygon_t *polygon,
			 const cairo_point_t *p1,
			 const cairo_point_t *p2)
{
    cairo_edge_t *edge;

    /* drop horizontal edges */
    if (p1->y == p2->y)
	goto DONE;

    if (polygon->num_edges == polygon->edges_size) {
	if (! _cairo_polygon_grow (polygon))
	    return;
    }

    edge = &polygon->edges[polygon->num_edges++];
    if (p1->y < p2->y) {
	edge->edge.p1 = *p1;
	edge->edge.p2 = *p2;
	edge->clockWise = 1;
    } else {
	edge->edge.p1 = *p2;
	edge->edge.p2 = *p1;
	edge->clockWise = 0;
    }

  DONE:
    _cairo_polygon_move_to (polygon, p2);
}

Ejemplo n.º 2

Archivo: cairo-polygon.c Proyecto: amyvmiwei/firefox

void
_cairo_polygon_add_edge (cairo_polygon_t *polygon,
			 const cairo_point_t *p1,
			 const cairo_point_t *p2,
			 int		      dir)
{
    cairo_edge_t *edge;

    /* drop horizontal edges */
    if (p1->y == p2->y)
	return;

    if (polygon->num_edges == polygon->edges_size) {
	if (! _cairo_polygon_grow (polygon))
	    return;
    }

    edge = &polygon->edges[polygon->num_edges++];
    if (p1->y < p2->y) {
	edge->edge.p1 = *p1;
	edge->edge.p2 = *p2;
	edge->dir = dir;
    } else {
	edge->edge.p1 = *p2;
	edge->edge.p2 = *p1;
	edge->dir = -dir;
    }
}

Ejemplo n.º 3

Archivo: cairo-polygon.c Proyecto: mgya/xCairo

static void
_add_edge (cairo_polygon_t *polygon,
	   const cairo_point_t *p1,
	   const cairo_point_t *p2,
	   int top, int bottom,
	   int dir)
{
    cairo_edge_t *edge;

    XASSERT (top < bottom);

    if (unlikely (polygon->num_edges == polygon->edges_size)) {
	if (! _cairo_polygon_grow (polygon))
	    return;
    }

    edge = &polygon->edges[polygon->num_edges++];
    edge->line.p1 = *p1;
    edge->line.p2 = *p2;
    edge->top = top;
    edge->bottom = bottom;
    edge->dir = dir;

    if (top < polygon->extents.p1.y)
	polygon->extents.p1.y = top;
    if (bottom > polygon->extents.p2.y)
	polygon->extents.p2.y = bottom;

    if (p1->x < polygon->extents.p1.x || p1->x > polygon->extents.p2.x) {
	cairo_fixed_t x = p1->x;
	if (top != p1->y)
	    x = _cairo_edge_compute_intersection_x_for_y (p1, p2, top);
	if (x < polygon->extents.p1.x)
	    polygon->extents.p1.x = x;
	if (x > polygon->extents.p2.x)
	    polygon->extents.p2.x = x;
    }

    if (p2->x < polygon->extents.p1.x || p2->x > polygon->extents.p2.x) {
	cairo_fixed_t x = p2->x;
	if (bottom != p2->y)
	    x = _cairo_edge_compute_intersection_x_for_y (p1, p2, bottom);
	if (x < polygon->extents.p1.x)
	    polygon->extents.p1.x = x;
	if (x > polygon->extents.p2.x)
	    polygon->extents.p2.x = x;
    }
}