Class: Ruby2D::Camera::Triangle

Inherits:
Triangle
  • Object
show all
Defined in:
lib/ruby2d/camera/triangle.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Triangle

Returns a new instance of Triangle.



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# File 'lib/ruby2d/camera/triangle.rb', line 31

def initialize(opts = {})
  super(opts)
  Ruby2D::Camera << self
  Window.remove(self)
  add
end

Instance Attribute Details

#x ⇒ Object 



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# File 'lib/ruby2d/camera/triangle.rb', line 49

def x
  @x ||= 0
end

#y ⇒ Object 



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# File 'lib/ruby2d/camera/triangle.rb', line 53

def y
  @y ||= 0
end

Instance Method Details

#_draw ⇒ Object

Recalculates real coordiantes Use after changing variables



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# File 'lib/ruby2d/camera/triangle.rb', line 8

def _draw
  return if @hide

  angle = Ruby2D::Camera.angle * (Math::PI / 180)
  half_width = Window.width * 0.5
  half_height = Window.height * 0.5
  temp_x1 = (((x + @x1 - Ruby2D::Camera.x) * Math.cos(angle)) - ((y + @y1 - Ruby2D::Camera.y) * Math.sin(angle))) * Ruby2D::Camera.zoom + half_width
  temp_y1 = (((x + @x1 - Ruby2D::Camera.x) * Math.sin(angle)) + ((y + @y1 - Ruby2D::Camera.y) * Math.cos(angle))) * Ruby2D::Camera.zoom + half_height
  temp_x2 = (((x + @x2 - Ruby2D::Camera.x) * Math.cos(angle)) - ((y + @y2 - Ruby2D::Camera.y) * Math.sin(angle))) * Ruby2D::Camera.zoom + half_width
  temp_y2 = (((x + @x2 - Ruby2D::Camera.x) * Math.sin(angle)) + ((y + @y2 - Ruby2D::Camera.y) * Math.cos(angle))) * Ruby2D::Camera.zoom + half_height
  temp_x3 = (((x + @x3 - Ruby2D::Camera.x) * Math.cos(angle)) - ((y + @y3 - Ruby2D::Camera.y) * Math.sin(angle))) * Ruby2D::Camera.zoom + half_width
  temp_y3 = (((x + @x3 - Ruby2D::Camera.x) * Math.sin(angle)) + ((y + @y3 - Ruby2D::Camera.y) * Math.cos(angle))) * Ruby2D::Camera.zoom + half_height
  Ruby2D::Triangle.draw(x1: temp_x1, y1: temp_y1,
                        x2: temp_x2, y2: temp_y2,
                        x3: temp_x3, y3: temp_y3,
                        color: [
                          [c1.r, c1.g, c1.b, c1.a],
                          [c2.r, c2.g, c2.b, c2.a],
                          [c3.r, c3.g, c3.b, c3.a]
                        ],
                        z: z)
end

#add ⇒ Object 



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# File 'lib/ruby2d/camera/triangle.rb', line 42

def add
  @hide = false
end

#remove ⇒ Object 



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# File 'lib/ruby2d/camera/triangle.rb', line 38

def remove
  @hide = true
end

#z=(z) ⇒ Object 



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# File 'lib/ruby2d/camera/triangle.rb', line 57

def z=(z)
  super(z)
  Ruby2D::Camera._sort_by_z
end