GMU:Einführung ins Programmieren mit Processing/Seminar: Difference between revisions

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 --Patawat P.
+===Florian Meyer: Fake 3D===
+[[File:pattern_rhombus.jpg|400px]] <br><br>
+One single cube consists of 3 rhombs which can be drawn simply by using the<br>
+”beginShape()-endShape()” method. Besides, the values of their coordinates<br>
+and colours depends on the angle of perspective from which we want to look<br>
+at the cube. After that we have to make a row by using the 'for loop ' and<br>
+another 'nested loop' for making the columns. As we can see in the image,<br>
+each column underneath isn't placed exactly in same order as their previous<br>
+ones are. There are shifted sideways by half the size of a single cube for<br>
+each time the nested 'for loop' is calculating a further one.<br>
+We have to consider that moving the columns in only one horizontal direction <br>
+will cause a bad looking stairway. To get rid of that, we have to find a way <br>
+to turn the values from every 2nd counting step the nested loop does, into <br>
+negative values instead of just adding them, so that each 2nd column is placed <br>
+back to its original starting position. This can be done for example by declaring <br>
+a new variable that is working as a multiplying operator and carries switching <br>
+values of 1 and -1.