Yeah, and I really like the way you did the grayscale, Builderboy.

[/offtopic]Right, I just uploaded that pic today, though [/offtopic]

This is a variant of Bresenham's line algorithm that radiates lines outwards (which you could use for raycasting (*cough*) and can draw points at intervals.
Arrows to move, clear to quit, plus and minus to increase/decrease interval.
I purposely added a pause so you can see how it radiates outwards.
(It needs optimization, though, and I'd really appreciate it if anybody could find a way to increase its speed)

.LINE
ClrDraw
50->A->B
2->L

Repeat getKey(15)
  If getKey
    getKey(3)-getKey(2)+A->A
    getKey(1)-getKey(4)+B->B
    getKey(10)-getKey(11)+L->L
    L=0+L->L
    sub(LIN,30,30,A,B,L)    //r1 and r2 are the x and y coordinates of the starting point - it radiates out to (r3,r4).  r5 is the interval between points and 1 is minimum.
  End
  DispGraph
End
Return

Lbl LIN
  If abs(r4-r2)>abs(r3-r1)
    Exch(°r1,°r2,2)
    Exch(°r3,°r2,2)
  End
  r1>r3->K
  abs(r3-r1)->S/2->V
  abs(r4-r2)->T
  r2->Y<r4*2-1->W
  For(Z,0,abs(r3-r1)/r5)
    Z*r5->X
    If K
      -X->X
    End
    If U
      Pxl-On(Y,X+r1)
    Else
      Pxl-On(X+r1,Y)
    End
    R5->I
    While I
      I-1->I
      If V-T->V>99
        Y+W->Y
        V+S->V
      End
    End
    DispGraph  //DispGraph and Pause are added to show how the line radiates outwards
    Pause 50
  End
Return


Hmm interesting stuff

Ooooh I never thought about doing that before! I tried figuring out from WikiTI how to change the contrast directly by setting a different value to the memory address, but it did not update the LCD contrast itself, just its value in the memory. Should be useful for game fade-in/out effects.

Speaking of fade in/out effects, here's a variant that doesn't mess with the contrast (the ones that do always look weird to me, I don't know why )

Code: [Select]

RecallPic
ClrDrawʳ
DrawInv ʳ
For(E,0,15
DispGraphʳ
End
Clrdraw
DrawInv
For(E,0,10)
DispGraph
End


Nice, and an added benefit is that interrupts get disabled temporarily with Shade(.

That looks fine to me. Make sure the program is in RAM, try to compile it again, and press PRGM when you get the error. Where does the cursor scroll to?

Output(1+{Pic99+2}-A,{E844B},{Pic99}r^10+48►Frac) with the closed parenthesis doesn't work either?

I'm going to try it...

It works! Thanks you for your help.