void Border::DoPaint(RenderContext* painter, const Rect& dest)
{
//ио->вС->об->ср
painter->FillRect(Rect(0, 0, dest.width(), top()), top_color());
painter->FillRect(Rect(0, 0, left(), dest.height()), left_color());
painter->FillRect(Rect(0, dest.height() - bottom(), dest.width(),
bottom()), bottom_color());
painter->FillRect(Rect(dest.width() - right(), 0, right(),
dest.height()), right_color());
}
void Canvas_Impl::get_gradient_colors(const Vec2f *triangles, int num_vertex, const Gradient &gradient, std::vector<Colorf> &out_colors)
{
out_colors.clear();
out_colors.reserve(num_vertex);
if (num_vertex)
{
Rectf bounding_box = get_triangles_bounding_box(triangles, num_vertex);
Sizef bounding_box_size = bounding_box.get_size();
if (bounding_box_size.width <= 0.0f)
bounding_box_size.width = 1.0f;
if (bounding_box_size.height <= 0.0f)
bounding_box_size.height = 1.0f;
Sizef bounding_box_invert_size( 1.0f / bounding_box_size.width, 1.0f / bounding_box_size.height );
for(;num_vertex>0; --num_vertex)
{
Vec2f point = *(triangles++);
point.x -= bounding_box.left;
point.y -= bounding_box.top;
point.x *= bounding_box_invert_size.width;
point.y *= bounding_box_invert_size.height;
Colorf top_color(
(gradient.top_right.r * point.x) + (gradient.top_left.r * (1.0f - point.x)),
(gradient.top_right.g * point.x) + (gradient.top_left.g * (1.0f - point.x)),
(gradient.top_right.b * point.x) + (gradient.top_left.b * (1.0f - point.x)),
(gradient.top_right.a * point.x) + (gradient.top_left.a * (1.0f - point.x)) );
Colorf bottom_color(
(gradient.bottom_right.r * point.x) + (gradient.bottom_left.r * (1.0f - point.x)),
(gradient.bottom_right.g * point.x) + (gradient.bottom_left.g * (1.0f - point.x)),
(gradient.bottom_right.b * point.x) + (gradient.bottom_left.b * (1.0f - point.x)),
(gradient.bottom_right.a * point.x) + (gradient.bottom_left.a * (1.0f - point.x)) );
Colorf color(
(bottom_color.r * point.y) + (top_color.r * (1.0f - point.y)),
(bottom_color.g * point.y) + (top_color.g * (1.0f - point.y)),
(bottom_color.b * point.y) + (top_color.b * (1.0f - point.y)),
(bottom_color.a * point.y) + (top_color.a * (1.0f - point.y)) );
out_colors.push_back(color);
}
}
}
