{"id":2398,"date":"2013-11-10T16:50:04","date_gmt":"2013-11-10T16:50:04","guid":{"rendered":"https:\/\/blog.ecotronics.ch\/wordpress\/?p=2398"},"modified":"2013-11-10T17:31:18","modified_gmt":"2013-11-10T17:31:18","slug":"animierte-archimedesspirale-in-processing","status":"publish","type":"post","link":"https:\/\/blog.ecotronics.ch\/wordpress\/?p=2398","title":{"rendered":"Animierte Archimedesspirale in Processing"},"content":{"rendered":"

\"Archimedesspirale\"<\/a>

Spirale<\/p><\/div>Max kam mit diesem Code in Pascal und es tauchte sofort die Frage auf, ob sich der Code auch in andere Sprachen \u00fcbersetzen l\u00e4sst. Am ehesten in Frage kam daf\u00fcr Processing<\/a>, eine Entwicklungsumgebung speziell f\u00fcr visuelles Design, die ich bei meinen Arduino-Projekten kennengelernt habe.
\nHier der Processing-Code dazu:<\/p>\n

 <\/p>\n

\r\n\/*\r\nAnimated archimedean spiral\r\nTranslated from Pascal into processing by Silvia Rothen, Switzerland\r\n*\/\r\n\r\nint myHeight = 700;\r\nint myWidth = 700;\r\nint cx = 0;\r\nint cy = 0;\r\nfloat FValueA = 3.0;\r\nfloat FValueB = 1.4;\r\nfloat angle = 0.0;\r\nfloat x1 = 0.0;\r\nfloat x2 = 0.0;\r\nfloat y1 = 0.0;\r\nfloat y2 = 0.0;\r\nint myDelay = 25;\r\nint lastTime = 0;\r\nboolean odd = false;\r\nint refresh = 0;\r\nboolean continued = true;\r\n\r\n\r\nvoid setup() {\r\n  size(myWidth, myHeight);\r\n  strokeWeight(3);\r\n  fill(255, 255, 255);\r\n  stroke(255, 255, 255, 5);\r\n  background(0, 0, 0);\r\n  cx = myWidth \/ 2;\r\n  cy = myHeight \/ 2;\r\n  frameRate(1000\/myDelay);\r\n}\r\n\r\n\/* toggle drawing with left mouse button \r\n   restart drawing with right mouse button\r\n*\/\r\nvoid mousePressed() {\r\n  if ( mouseButton == LEFT) {\r\n    continued = !continued;\r\n  }\r\n  if ( mouseButton == RIGHT) {\r\n    FValueB = 1.4;\r\n    background(0, 0, 255);\r\n    stroke(255);\r\n    x1 = 0.0;\r\n    x2 = 0.0;\r\n    y1 = 0.0;\r\n    y2 = 0.0;\r\n    continued = true;\r\n  } \r\n}\r\n\r\n\r\nvoid draw() {\r\n  if (continued) {\r\n    FValueB = FValueB + 0.001;\r\n    refresh = refresh + 1;\r\n    background(0, 0, 204);\r\n  \r\n    stroke(255, 255, 0);\r\n    for (int i = 42; i >= 0; i = i-1) {\r\n      angle = FValueB * i;\r\n      x2 = cx + (FValueA + FValueB * angle) * cos(angle);\r\n      y2 = cy + (FValueA + FValueB * angle) * sin(angle);\r\n      if (i == 42) {\r\n        x1 = x2;\r\n        y1 = y2;\r\n      } else {\r\n        line(x1,y1,x2,y2);\r\n        x1 = x2;\r\n        y1 = y2;\r\n      }\r\n    }\r\n  }\r\n}\r\n<\/pre>\n
Und hier sieht man die Animation live (vorausgesetzt, man kann Java-Applets im Browser laufen lassen):
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