screenX()

Takes a three-dimensional X, Y, Z position and returns the X value for where it will appear on a (two-dimensional) screen.

• void setup() {
   size(100, 100, P3D);
  }
  
  void draw() {
   background(204);
   
   float x = mouseX;
   float y = mouseY;
   float z = -100;
   
   // Draw "X" at z = -100
   stroke(255);
   line(x-10, y-10, z, x+10, y+10, z); 
   line(x+10, y-10, z, x-10, y+10, z); 
   
   // Draw gray line at z = 0 and same 
   // x value. Notice the parallax
   stroke(102);
   line(x, 0, 0, x, height, 0);
   
   // Draw black line at z = 0 to match 
   // the x value element drawn at z = -100 
   stroke(0);
   float theX = screenX(x, y, z);
   line(theX, 0, 0, theX, height, 0); 
  } 
  

• screenX(x, y)
• screenX(x, y, z)

• x(float)3D x-coordinate to be mapped
• y(float)3D y-coordinate to be mapped
• z(float)3D z-coordinate to be mapped

• float

• screenY()
• screenZ()