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Contents
module GridGenerator
module Helper
def self.distance(a, b)
Math.sqrt((b[0,0] - a[0,0])**2 + (b[1,0] - a[1,0])**2)
end
# 1 -> / 2 |
# 2 -> / 3 |
def self.intervals(a, b, i)
dx = b[0,0] - a[0,0]
dy = b[1,0] - a[1,0]
Array.new(i) do |n|
interval_x = dx / (i + 1)
interval_y = dy / (i + 1)
x = a[0,0] + (n + 1) * interval_x
y = a[1,0] + (n + 1) * interval_y
Matrix.column_vector([x, y])
end
end
def self.intersection(ab,cd)
x1 = ab.a[0,0]
y1 = ab.a[1,0]
x2 = ab.b[0,0]
y2 = ab.b[1,0]
x3 = cd.a[0,0]
y3 = cd.a[1,0]
x4 = cd.b[0,0]
y4 = cd.b[1,0]
px_numerator = (x1 * y2 - y1 * x2) * (x3 - x4) - (x1 - x2) * (x3 * y4 - y3 * x4)
px_denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4)
py_numerator = (x1 * y2 - y1 * x2) * (y3 - y4) - (y1 - y2) * (x3 * y4 - y3 * x4)
py_denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4)
px = px_numerator.to_f / px_denominator
py = py_numerator.to_f / py_denominator
Matrix.column_vector([px, py])
end
end
end
Version data entries
34 entries across 34 versions & 1 rubygems