Function example_smiley

test/test.cpp:1909–1950

}

void example_smiley( canvas &that, float width, float height )
{
    float center_x = 0.5f * width;
    float center_y = 0.5f * height;
    float radius = min( width, height ) * 0.4f;
    that.set_radial_gradient( fill_style,
                              center_x, center_y, 0.0f,
                              center_x, center_y, radius );
    that.add_color_stop( fill_style, 0.0f, 1.0f, 0.9f, 0.2f, 1.0f );
    that.add_color_stop( fill_style, 0.95f, 0.95f, 0.65f, 0.15f, 1.0f );
    that.add_color_stop( fill_style, 1.0f, 0.9f, 0.55f, 0.0f, 1.0f );
    that.arc( center_x, center_y, radius, 0.0f, 6.28318531f );
    that.fill();
    that.set_linear_gradient( fill_style,
                              center_x, center_y - 0.95f * radius,
                              center_x, center_y );
    that.add_color_stop( fill_style, 0.0f, 1.0f, 1.0f, 1.0f, 0.5f );
    that.add_color_stop( fill_style, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f );
    that.begin_path();
    that.arc( center_x, center_y - 0.15f * radius, 0.8f * radius,
              0.0f, 6.28318531f );
    that.fill();
    that.set_color( stroke_style, 0.0f, 0.0f, 0.0f, 0.95f );
    that.set_line_width( 0.2f * radius );
    that.line_cap = circle;
    that.begin_path();
    that.move_to( center_x - 0.2f * radius, center_y - 0.5f * radius );
    that.line_to( center_x - 0.2f * radius, center_y - 0.2f * radius );
    that.move_to( center_x + 0.2f * radius, center_y - 0.5f * radius );
    that.line_to( center_x + 0.2f * radius, center_y - 0.2f * radius );
    that.stroke();
    that.set_color( fill_style, 0.0f, 0.0f, 0.0f, 0.95f );
    that.begin_path();
    that.move_to( center_x - 0.6f * radius, center_y + 0.1f * radius );
    that.bezier_curve_to( center_x - 0.3f * radius, center_y + 0.8f * radius,
                          center_x + 0.3f * radius, center_y + 0.8f * radius,
                          center_x + 0.6f * radius, center_y + 0.1f * radius);
    that.bezier_curve_to( center_x + 0.3f * radius, center_y + 0.3f * radius,
                          center_x - 0.3f * radius, center_y + 0.3f * radius,
                          center_x - 0.6f * radius, center_y + 0.1f * radius);
    that.fill();
}

void example_knot( canvas &that, float width, float height )
{