User Manual

Library

Next up, load the testshapes_16x32 or testshapes_32x32 example sketch, which will test every drawing element

available (again, you may need to edit the pin numbers for the 32x32 panel).

The most simple thing you may want to do is draw a single pixel, we saw this introduced above.

Next we will fill the screen with green by drawing a really large rectangle. The first two arguments are the top left

point, then the width in pixels, and the height in pixels, finally the color

Next we will draw just the outline of a rectangle, in yellow

Next you may want to draw lines. The drawLine procedure will draw a line in any color you want, we used this to draw

a big X

The next shapes we draw are circles. You can draw the outline of a circle with drawCircle or fill a circle with fillCircle.

The first two arguments are the center point, the third argument is the radius in pixels, finally the color to use.

// draw a pixel in solid white

matrix.drawPixel(0, 0, matrix.Color333(7, 7, 7));

// fix the screen with green

matrix.fillRect(0, 0, 32, 16, matrix.Color333(0, 7, 0));

// draw a box in yellow

matrix.drawRect(0, 0, 32, 16, matrix.Color333(7, 7, 0));

// draw an 'X' in red

matrix.drawLine(0, 0, 31, 15, matrix.Color333(7, 0, 0));

matrix.drawLine(31, 0, 0, 15, matrix.Color333(7, 0, 0));