Draw_line bug on RT1062

OpenMV Boards
1

When thickness is an even number in the draw_line function, the color of the bottom rows of pixels of a horizontal line is incorrect. Also on a vertical line, but not on a diagonal line. When the thickess is an odd number, the color of the pixels on a horizontal or vertcal line are correct.

This code reproduces the bug:

import sensor
import time

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time=2000)

clock = time.clock()

while True:
    clock.tick()
    img = sensor.snapshot()
    img.draw_line(100, 100, 200, 100, color = [0,0,180], thickness = 4)
    img.draw_line(100, 100, 100, 200, color = [0,0,180], thickness = 4)
    img.draw_line(100, 100, 200, 200, color = [0,0,180], thickness = 4)

    print(clock.fps())
2

@ajacobs - Can you create a bug on github?

I see the issue. It’s something going wrong with this method: openmv/src/omv/imlib/draw.c at master · openmv/openmv

It has the right color on start. But, ends up with the wrong color on the end.