Class: Ruby2D::Camera::Rectangle

Inherits:
Rectangle
  • Object
show all
Defined in:
lib/ruby2d/camera/rectangle.rb

Overview

Wraps existing variables as well as adding new methods so that it can be handled by the Camera Module

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Rectangle

Returns a new instance of Rectangle.



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# File 'lib/ruby2d/camera/rectangle.rb', line 37

def initialize(opts = {})
  super(opts)
  Ruby2D::Camera << self
  Window.remove(self)
  @x1 -= @x
  @x2 -= @x
  @x3 -= @x
  @x4 -= @x
  @y1 -= @y
  @y2 -= @y
  @y3 -= @y
  @y4 -= @y
end

Instance Attribute Details

#x ⇒ Object 



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# File 'lib/ruby2d/camera/rectangle.rb', line 62

def x
  @x ||= 0
end

#y ⇒ Object 



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# File 'lib/ruby2d/camera/rectangle.rb', line 66

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/rectangle.rb', line 10

def _draw
  return if @hide

  angle = Camera.angle * (Math::PI / 180)
  half_width = Window.width * 0.5
  half_height = Window.height * 0.5
  temp_x1 = (((x + x1 - Camera.x) * Math.cos(angle)) - ((y + y1 - Camera.y) * Math.sin(angle))) * Camera.zoom + half_width
  temp_y1 = (((x + x1 - Camera.x) * Math.sin(angle)) + ((y + y1 - Camera.y) * Math.cos(angle))) * Camera.zoom + half_height
  temp_x2 = (((x + x2 - Camera.x) * Math.cos(angle)) - ((y + y2 - Camera.y) * Math.sin(angle))) * Camera.zoom + half_width
  temp_y2 = (((x + x2 - Camera.x) * Math.sin(angle)) + ((y + y2 - Camera.y) * Math.cos(angle))) * Camera.zoom + half_height
  temp_x3 = (((x + x3 - Camera.x) * Math.cos(angle)) - ((y + y3 - Camera.y) * Math.sin(angle))) * Camera.zoom + half_width
  temp_y3 = (((x + x3 - Camera.x) * Math.sin(angle)) + ((y + y3 - Camera.y) * Math.cos(angle))) * Camera.zoom + half_height
  temp_x4 = (((x + x4 - Camera.x) * Math.cos(angle)) - ((y + y4 - Camera.y) * Math.sin(angle))) * Camera.zoom + half_width
  temp_y4 = (((x + x4 - Camera.x) * Math.sin(angle)) + ((y + y4 - Camera.y) * Math.cos(angle))) * Camera.zoom + half_height
  Ruby2D::Quad.draw(x1: temp_x1, y1: temp_y1,
                    x2: temp_x2, y2: temp_y2,
                    x3: temp_x3, y3: temp_y3,
                    x4: temp_x4, y4: temp_y4,
                    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],
                      [c4.r, c4.g, c4.b, c4.a]
                    ],
                    z: z)
end

#add ⇒ Object 



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# File 'lib/ruby2d/camera/rectangle.rb', line 55

def add
  @hide = false
end

#remove ⇒ Object 



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# File 'lib/ruby2d/camera/rectangle.rb', line 51

def remove
  @hide = true
end

#z=(z) ⇒ Object 



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# File 'lib/ruby2d/camera/rectangle.rb', line 70

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