/* * Draw a pixel at the specified coordinates. * * Examples: * im.draw_pixel 10, 10 # draw using context color * im.draw_pixel 10, 10, Imlib2::Color::BLUE # draw blue pixel * im.draw_pixel [10, 10], Imlib2::Color::RED # draw red pixel * */ static VALUE image_draw_pixel(int argc, VALUE *argv, VALUE self) {