from drawtool import DrawTool
import brush

def draw_stroke():
    step_x = (brush.end_x - brush.start_x) / brush.num_circles
    step_y = (brush.end_y - brush.start_y) / brush.num_circles
    for i in range(brush.num_circles):
        dt.set_color_rgb( brush.red[i], brush.green[i], brush.blue[i] )
        x = brush.start_x + i*step_x
        y = brush.start_y + i*step_y
        dt.draw_filled_circle(x, y, brush.stroke_size)

dt = DrawTool()
dt.set_XY_range(0,10, 0,10)

brush.set_parameters(2, 3, 5, 3, 0.2)
brush.compute_num_circles()
brush.make_red_stroke_colors(0.1, 0.9, 0, 0)
draw_stroke()

brush.set_parameters(2, 4, 2, 7, 0.1)
brush.compute_num_circles()
brush.make_green_stroke_colors(0.3, 0.1, 0.9, 0)
draw_stroke()

brush.set_parameters(3, 4, 6, 7, 0.05)
brush.compute_num_circles()
brush.make_blue_stroke_colors(0.2, 0.1, 0.1, 0.8)
draw_stroke()

dt.display()