RubyGL::Vec3

# File lib/rubygl/math.rb, line 18
def initialize(array = nil)
    @data = Array.new(3, 0)
    
    if array then
        for i in 0...@data.size
            @data[i] = array[i]
        end
    end
end

# File lib/rubygl/math.rb, line 28
def +(other_vector)
    new_vector = Vec3.new()
    
    for i in 0...@data.size
        new_vector[i] = @data[i] + other_vector[i]
    end
    
    new_vector
end

# File lib/rubygl/math.rb, line 38
def -(other_vector)
    new_vector = Vec3.new()
    
    for i in 0...@data.size
        new_vector[i] = @data[i] - other_vector[i]
    end
    
    new_vector
end

# File lib/rubygl/math.rb, line 87
def [](index)
    @data[index]
end

# File lib/rubygl/math.rb, line 91
def []=(index, value)
    @data[index] = value
end

# File lib/rubygl/math.rb, line 48
def cross(other_vector)
    new_vector = Vec3.new()
    
    new_vector[0] = (@data[1] * other_vector[2]) - (@data[2] * other_vector[1])
    new_vector[1] = (@data[0] * other_vector[2]) - (@data[2] * other_vector[0])
    new_vector[2] = (@data[0] * other_vector[1]) - (@data[1] * other_vector[0])
    
    new_vector
end

# File lib/rubygl/math.rb, line 77
def len()
    sum = 0
    
    for i in 0...@data.size
        sum += @data[i] * @data[i]
    end
    
    Math::sqrt(sum)
end

# File lib/rubygl/math.rb, line 66
def norm()
    new_vector = Vec2.new()
    
    for i in 0...@data.size
        new_vector[i] = @data[i]
    end
    new_vector.norm!
    
    new_vector
end

# File lib/rubygl/math.rb, line 58
def norm!()
    curr_len = self.len().abs()
    
    for i in 0...@data.size
        @data[i] /= curr_len
    end
end

# File lib/rubygl/math.rb, line 99
def to_a()
    self.to_ary
end

# File lib/rubygl/math.rb, line 95
def to_ary()
    Array.new(@data)
end