How to resolve the algorithm Color wheel step by step in the Applesoft BASIC programming language

Published on 12 May 2024 09:40 PM
#Applesoft basic

How to resolve the algorithm Color wheel step by step in the Applesoft BASIC programming language

Table of Contents

Problem Statement

Write a function to draw a HSV color wheel completely with code. This is strictly for learning purposes only. It's highly recommended that you use an image in an actual application to actually draw the color wheel   (as procedurally drawing is super slow). This does help you understand how color wheels work and this can easily be used to determine a color value based on a position within a circle.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Color wheel step by step in the Applesoft BASIC programming language

Source code in the applesoft programming language

 100  LET R = 3.1415926535 / 180
 110  LET YO = 20
 120  LET XO = YO
 130  LET MS =  INT (YO * 7 / 8)
 140  LET O$ = "1111111111.1111111110.1111011110.1101110110.1101010110.1010101010.0010101001.0010001001.0000100001.0000000001.0000000000"
 150  GR 
 160  FOR S = 0 TO MS
 170      LET D = S / MS
 180      LET P$ =  MID$ (O$, INT (D * 10) * 11 + 1,11)
 190      LET SY = S
 200      LET SX = S * 4 / 7
 210      LET P = 0
 220      FOR I = 0 TO 360
 230          LET X = XO +  SIN (I * R) * SX
 240          LET Y = YO +  COS (I * R) * SY
 250          LET W = 15
 260          IF I >  = 30 - 22.4 AND I < 30 + 22.5 THEN  COLOR= 9
 270          IF I >  = 75 - 22.5 AND I < 75 + 22.5 THEN  COLOR= 13
 280          IF I >  = 120 - 22.5 AND I < 120 + 22.5 THEN  COLOR= 12:W = 14
 290          IF I >  = 165 - 22.5 AND I < 165 + 22.5 THEN  COLOR= 7:W = 14
 300          IF I >  = 210 - 22.5 AND I < 210 + 22.5 THEN  COLOR= 6
 310          IF I >  = 255 - 22.5 AND I < 255 + 22.5 THEN  COLOR= 2
 320          IF I >  = 300 - 22.5 AND I < 300 + 22.5 THEN  COLOR= 3:W = 11
 330          IF I >  = 345 - 22.5 OR I < 345 + 22.5 - 360 THEN  COLOR= 1:W = 11
 340          IF D < .2 THEN W = 15
 350          IF  RND (1) < D THEN W = 15
 360          IF  VAL ( MID$ (P$,P + 1,1)) THEN  COLOR= W
 370          IF  SCRN( X,Y) = 0 THEN  PLOT X,Y:P = P + 1: IF P >  = 9 THEN P = 0
 380  NEXT I,S

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