Processing for Designers page >R< odd page {19}
10.2
>Basic Functions<
if( ) Layers
In this example, we are building hierarchy using two layers. One layer is composed of densely spaced “T”s the other a widely spaced grid of “t”s. They are formed by two for() functions: for(int i=-10;i<250;i=i+5) and for(int z=10;z<250;z=z+5). Each of them contains one value: i and z respectively. If you wanted to build more layers, the code would need more values than i, z, and more corresponding for() functions. The if( ) function is used here to “test” the results from the for( ) function and if they meet certain criteria to then execute the code that produces the grid of lowercase “t”s. Namely, it checks the values of i and z, and if either is exactly divisible by 100, it executes the text( ) function to display a “t.” Thus, we get grid lines spaced 100 pixels apart (in both directions). The final stage of the process is defined by the else{} function, which determines what is executed last. In this case, it is the uppercase “T,” by using the following functions: fill(), textFont() and text(), which define its color, font and position. The last function, text("T",i+55,z+55), defines the position of the x coordinate as i plus 55 and y as z plus 55.
ttt ttt ttt tt tt tt ttt ttt ttt ttt ttt ttt ttt T t T T T T T T T T T T T T T T T T T tttT T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T tttT T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T ttt T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T ttttttttttttttT t t t t t t t t t t T t T t T t T t T t T T t T t t T T t T t t T t T t T t T t t T t T t t t t t t t t t T t T t T t T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T ttt T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T ttt T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T ttt T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t t ttt T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T ttt T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T t T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T t T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T ttttttttttttttT t t t t t t t t t t T t T t T t T t T t T T t T t t T T t T t t T t T t T t T t t T t T t t t t t t t t t T t T t T t T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T ttt T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T ttt T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T t T T t T T T T T T T t T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT T TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT TT
PFont myFont;
else{
void setup(){
fill(170,167,167);
size(300,300);
textFont(myFont,20);
myFont =
text(“T”,i+55,z+55);
createFont(“Univers”,48);
}
textFont(myFont,80); for(int i=-10;i<250;i=i+5) { for(int z=10;z<250;z=z+5)
}
{ if(i%100==0 || z%100==0) { fill(0,0,0); text(“t”,i,z); }
http://processing.org/reference/if_.html
}
background(255);
}