Class: Ruby2D::Quad
Direct Known Subclasses
Instance Attribute Summary collapse
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#c1 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#c2 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#c3 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#c4 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#x1 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#x2 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#x3 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#x4 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#y1 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#y2 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#y3 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
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#y4 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left.
Attributes included from Renderable
#color, #height, #width, #x, #y, #z
Instance Method Summary collapse
- #color=(c) ⇒ Object
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#contains?(x, y) ⇒ Boolean
The logic is the same as for a triangle See triangle.rb for reference.
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#initialize(opts = {}) ⇒ Quad
constructor
A new instance of Quad.
Methods included from Renderable
#a, #a=, #add, #b, #b=, #colour, #colour=, #g, #g=, #opacity, #opacity=, #r, #r=, #remove
Constructor Details
#initialize(opts = {}) ⇒ Quad
Returns a new instance of Quad.
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# File 'lib/ruby2d/quad.rb', line 17 def initialize(opts = {}) @x1 = opts[:x1] || 0 @y1 = opts[:y1] || 0 @x2 = opts[:x2] || 100 @y2 = opts[:y2] || 0 @x3 = opts[:x3] || 100 @y3 = opts[:y3] || 100 @x4 = opts[:x4] || 0 @y4 = opts[:y4] || 100 @z = opts[:z] || 0 self.color = opts[:color] || 'white' self.opacity = opts[:opacity] if opts[:opacity] add end |
Instance Attribute Details
#c1 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def c1 @c1 end |
#c2 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def c2 @c2 end |
#c3 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def c3 @c3 end |
#c4 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def c4 @c4 end |
#x1 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def x1 @x1 end |
#x2 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def x2 @x2 end |
#x3 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def x3 @x3 end |
#x4 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def x4 @x4 end |
#y1 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def y1 @y1 end |
#y2 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def y2 @y2 end |
#y3 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def y3 @y3 end |
#y4 ⇒ Object
Coordinates in clockwise order, starting at top left: x1,y1 == top left x2,y2 == top right x3,y3 == bottom right x4,y4 == bottom left
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# File 'lib/ruby2d/quad.rb', line 12 def y4 @y4 end |
Instance Method Details
#color=(c) ⇒ Object
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# File 'lib/ruby2d/quad.rb', line 32 def color=(c) @color = Color.set(c) update_color(@color) end |
#contains?(x, y) ⇒ Boolean
The logic is the same as for a triangle See triangle.rb for reference
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# File 'lib/ruby2d/quad.rb', line 39 def contains?(x, y) self_area = triangle_area(@x1, @y1, @x2, @y2, @x3, @y3) + triangle_area(@x1, @y1, @x3, @y3, @x4, @y4) questioned_area = triangle_area(@x1, @y1, @x2, @y2, x, y) + triangle_area(@x2, @y2, @x3, @y3, x, y) + triangle_area(@x3, @y3, @x4, @y4, x, y) + triangle_area(@x4, @y4, @x1, @y1, x, y) questioned_area <= self_area end |