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Contents
# The Nature of Code # Daniel Shiffman # http://natureofcode.com # A fixed boundary class class Boundary extend Forwardable def_delegators(:@app, :box2d, :rect_mode, :rect, :fill, :stroke) # A boundary is a simple rectangle with x, y, width, and height attr_reader :x, :y, :w, :h def initialize(x, y, w, h) @x, @y, @w, @h = x, y, w, h @app = $app # Define the polygon sd = PolygonShape.new # Figure out the box2d coordinates box2dw = box2d.scale_to_world(w / 2) box2dh = box2d.scale_to_world(h / 2) # We're just a box sd.setAsBox(box2dw, box2dh) # Create the body bd = BodyDef.new bd.type = BodyType::STATIC bd.position.set(box2d.processing_to_world(x, y)) b = box2d.createBody(bd) # Attached the shape to the body using a Fixture b.create_fixture(sd, 1) end # Draw the boundary, if it were at an angle we'd have to do something fancier def display fill(0) stroke(0) rect_mode(Java::ProcessingCore::PConstants::CENTER) rect(x, y, w, h) end end
Version data entries
2 entries across 2 versions & 1 rubygems
Version | Path |
---|---|
pbox2d-0.5.0-java | examples/distance_joint/boundary.rb |
pbox2d-0.4.2-java | examples/distance_joint/boundary.rb |