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160 lines
2.8 KiB
160 lines
2.8 KiB
#
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# Copyright (c) 2001 by Jim Menard <jimm@io.com>
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#
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# Released under the same license as Ruby. See
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# http://www.ruby-lang.org/en/LICENSE.txt.
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#
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require 'View'
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class BoidView < View
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BODY_COLOR = [0, 0, 0]
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BEAK_COLOR = [0.75, 0.5, 0.0]
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SHADOW_COLOR = [0.25, 0.55, 0.25]
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HALF_WING_BASE = 3
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HALF_LENGTH = 5
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HALF_THICKNESS = 1
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NOSE_LENGTH = 3
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@@object = nil
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@@shadow = nil
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@@wings = nil
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@@wingsShadows = nil
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def initialize(model)
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super(model, [0, 0, 0])
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@wings = nil
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@wingsShadows = nil
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end
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def makeObject
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@@object = BoidView.makeObject() unless @@object
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@object = @@object
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@wings = @@wings
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end
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def makeShadow
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BoidView.makeShadow() unless @@shadow
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@shadow = @@shadow
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@wingsShadows = @@wingsShadows
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end
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def drawObject
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super()
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angle = 0
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case model.wingFlapPos
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when 0
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angle = 60
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when 1, 7
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angle = 30
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when 2, 6
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angle = 0
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when 3, 5
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angle = -30
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when 4
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angle = -60
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end
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PushMatrix()
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Rotate(angle, 0, 0, 1)
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CallList(@wings[0])
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Rotate(angle * -2, 0, 0, 1)
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CallList(@wings[1])
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PopMatrix()
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end
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def BoidView.makeObject
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makeWings()
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object = GenLists(1)
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NewList(object, COMPILE)
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makeBody()
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makeNose()
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EndList()
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return object
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end
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def BoidView.makeShadow
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@@shadow = GenLists(1)
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NewList(@@shadow, COMPILE)
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p0 = Point::ORIGIN.dup()
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p1 = Point::ORIGIN.dup()
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dims = Point.new(HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
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p0.subtractPoint(dims)
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p1.addPoint(dims)
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groundLevel = -($PARAMS['world_height'] / 2) + 1
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Color(SHADOW_COLOR)
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Begin(TQUADS)
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Vertex(p1.x, groundLevel, p0.z)
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Vertex(p0.x, groundLevel, p0.z)
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Vertex(p0.x, groundLevel, p1.z)
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Vertex(p1.x, groundLevel, p1.z)
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End()
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# Begin(TRIANGLES)
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# Vertex(p1.x, groundLevel, p1.z)
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# Vertex(0, groundLevel, p0.z)
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# Vertex(p0.x, groundLevel, p1.z)
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# End()
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EndList()
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end
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def BoidView.makeBody
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p0 = Point::ORIGIN.dup()
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p1 = Point::ORIGIN.dup()
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dims = Point.new(HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
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p0.subtractPoint(dims)
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p1.addPoint(dims)
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Color(BODY_COLOR)
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Graphics.boxFromCorners(p0, p1)
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end
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def BoidView.makeWings
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@@wings = []
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len = -$PARAMS['boid_wing_length']
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@@wings << makeOneWing(len)
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@@wings << makeOneWing(-len)
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end
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def BoidView.makeOneWing(len)
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wing = GenLists(1)
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NewList(wing, COMPILE)
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Color(BODY_COLOR)
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Begin(TRIANGLES)
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Vertex(0, 0, -HALF_WING_BASE)
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Vertex(len, 0, 0)
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Vertex(0, 0, HALF_WING_BASE)
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End()
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EndList()
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return wing
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end
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def BoidView.makeNose()
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Color(BEAK_COLOR)
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Begin(TRIANGLE_FAN)
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Vertex(0, 0, HALF_LENGTH + NOSE_LENGTH)
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Vertex( HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
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Vertex(-HALF_THICKNESS, HALF_THICKNESS, HALF_LENGTH)
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Vertex(-HALF_THICKNESS, -HALF_THICKNESS, HALF_LENGTH)
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Vertex( HALF_THICKNESS, -HALF_THICKNESS, HALF_LENGTH)
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End()
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end
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end
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