This reference is for Processing 2.0+. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.

Name

normal()
Examples
example pic
size(100, 100, P3D);
noStroke();
background(0);
pointLight(150, 250, 150, 10, 30, 50);
beginShape();
normal(0, 0, 1);
vertex(20, 20, -10);
vertex(80, 20, 10);
vertex(80, 80, -10);
vertex(20, 80, 10);
endShape(CLOSE);
Description Sets the current normal vector. Used for drawing three dimensional shapes and surfaces, normal() specifies a vector perpendicular to a shape's surface which, in turn, determines how lighting affects it. Processing attempts to automatically assign normals to shapes, but since that's imperfect, this is a better option when you want more control. This function is identical to glNormal3f() in OpenGL.
Syntax
normal(nx, ny, nz)
Parameters
nx float: x direction
ny float: y direction
nz float: z direction
Returnsvoid
RelatedbeginShape()
endShape()
lights()
Updated on May 19, 2014 05:30:01pm PDT

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