Sha256: 2b5dbe4796d7bcfdc5e6fe622698765aaabb2a6534d09177f9518dd529134c02
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Size: 841 Bytes
Versions: 10
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Stored size: 841 Bytes
Contents
# # Vector # by Daniel Shiffman. # PVector was used in the original (instead of Vec2D) # Demonstration some basic vector math: subtraction, normalization, scaling # Normalizing a vector sets its length to 1. # load_library :vecmath def setup size(640,360) smooth end def draw background(0) # A vector that points to the mouse location mouse = Vec2D.new(mouse_x, mouse_y) # A vector that points to the center of the window center = Vec2D.new(width/2, height/2) # Subtract center from mouse which results in a vector that points from center to mouse mouse -= center # Normalize the vector mouse.normalize! # Multiply its length by 150 (Scaling its length) mouse *= 150 translate(width/2,height/2) # Draw the resulting vector stroke(255) stroke_weight(4) line(0, 0, mouse.x, mouse.y) end
Version data entries
10 entries across 10 versions & 1 rubygems