void Shape2D::add_rounded_line(const Pointf &start, const Pointf &end, float line_width, float cap_rounding, bool reverse)
{
float distance = start.distance(end);
Sizef size(distance, line_width);
Angle angle(start.angle_line(end));
Pointf center(start.x + size.width / 2.0f, start.y + size.height / 2.0f );
Vec2f rotated = start;
rotated.rotate(center, angle);
Vec2f origin( start.x + (start.x - rotated.x), start.y + (start.y - rotated.y));
rotated = Vec2f(0.0f, line_width/2.0f);
rotated.rotate(Vec2f(), angle);
origin.x -= rotated.x;
origin.y -= rotated.y;
add_rounded_rect(origin, size, cap_rounding, angle, reverse);
}
void Canvas::fill_circle(const Pointf ¢er, const Pointf ¢ergradient, float radius, const Gradient &gradient)
{
float offset_x = 0;
float offset_y = 0;
float rotationcount = max(5.0f, (radius - 3.0f));
float halfpi = 1.5707963267948966192313216916398f;
float turn = halfpi / rotationcount;
if(center.distance(center + centergradient) < radius)
{
offset_x = centergradient.x;
offset_y = -centergradient.y;
}
Vec4f colors[3] =
{
Vec4f(gradient.top_left.get_red(), gradient.top_left.get_green(), gradient.top_left.get_blue(), gradient.top_left.get_alpha()),
Vec4f(gradient.bottom_right.get_red(), gradient.bottom_right.get_green(), gradient.bottom_right.get_blue(), gradient.bottom_right.get_alpha()),
Vec4f(gradient.bottom_right.get_red(), gradient.bottom_right.get_green(), gradient.bottom_right.get_blue(), gradient.bottom_right.get_alpha())
};
Vec4f triangle_colors[4*3];
for (int i=0; i<3; i++)
{
triangle_colors[0*3+i] = colors[i];
triangle_colors[1*3+i] = colors[i];
triangle_colors[2*3+i] = colors[i];
triangle_colors[3*3+i] = colors[i];
}
RenderBatchTriangle *batcher = impl->batcher.get_triangle_batcher();
for(float i = 0; i < rotationcount ; i++)
{
float pos1 = cos(i * turn);
float pos2 = sin(i * turn);
float pos3 = cos((i+1) * turn);
float pos4 = sin((i+1) * turn);
Vec2f positions[4*3] =
{
// 90 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x + ((float)radius * pos1), center.y + ((float)radius * pos2)),
Vec2f(center.x + ((float)radius * pos3), center.y + ((float)radius * pos4)),
// 0 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x + ((float)radius * pos2), center.y - ((float)radius * pos1)),
Vec2f(center.x + ((float)radius * pos4), center.y - ((float)radius * pos3)),
// 270 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x - ((float)radius * pos1), center.y - ((float)radius * pos2)),
Vec2f(center.x - ((float)radius * pos3), center.y - ((float)radius * pos4)),
// 180 triangle:
Vec2f(center.x + offset_x , center.y + offset_y),
Vec2f(center.x - ((float)radius * pos2), center.y + ((float)radius * pos1)),
Vec2f(center.x - ((float)radius * pos4), center.y + ((float)radius * pos3))
};
batcher->fill_triangle(*this, positions, triangle_colors, 4*3);
}
}
