AaronDayton
New member
Good afternoon,
I'm looking for some guidance on how to use u8g2lib.
Long answer
The goal is to draw some text on the screen with the print command, display some numbers next to that text, then display a shape next to those numbers.
When the numbers change from a high value to a low value ill draw a triangle pointing down, when the numbers change from a low value to a high value the triangle will point up.
What I cant figure out how to do, and I'm not quite sure if there is a way to do this... but draw a shape on the screen, then draw the same shape again with an inverted color clearing just that shape but not clearing the rest of the screen.
Draw shape, wait some time, clear shape without clearing the rest of the screen.
I kind of thought I could do something like
This is my general idea... or theory how its supposed to work... Can it work like this? because I must be missing something very simple. You guys are the experts.
Apologies if the answer is obvious I'm pretty beginner to C++ so having simple code snippets work really well to learn these things.
Thank you much,
--Aaron
I'm looking for some guidance on how to use u8g2lib.
Long answer
The goal is to draw some text on the screen with the print command, display some numbers next to that text, then display a shape next to those numbers.
When the numbers change from a high value to a low value ill draw a triangle pointing down, when the numbers change from a low value to a high value the triangle will point up.
What I cant figure out how to do, and I'm not quite sure if there is a way to do this... but draw a shape on the screen, then draw the same shape again with an inverted color clearing just that shape but not clearing the rest of the screen.
Draw shape, wait some time, clear shape without clearing the rest of the screen.
I kind of thought I could do something like
Code:
u8g2.drawTriangle(20,5, 27,50, 5,32); // Do this to draw the shape
//Something else happens here
u8g2.setDrawColor(SomeThing); // set the draw color to "SomeThing" decimal 1-3
u8g2.drawTriangle(20,5, 27,50, 5,32); // draw the same shape in the same place to turn off only those pixels...Apologies if the answer is obvious I'm pretty beginner to C++ so having simple code snippets work really well to learn these things.
Thank you much,
--Aaron
