Class: VectorSalad::StandardShapes::Scale

Inherits:

Transform

Object
Transform
VectorSalad::StandardShapes::Scale

show all

Defined in:

lib/vector_salad/standard_shapes/scale.rb

Overview

Scale the contained shapes by multiplier about the origin.

Instance Method Summary (collapse)

- (Any) initialize(x_multiplier, y_multiplier = x_multiplier, canvas:, **_options, &block) constructor
Supply just 1 multiplier to scale evenly, or x and y multipliers to stretch or squash the axies.

Constructor Details

- (`Any`) initialize(x_multiplier, y_multiplier = x_multiplier, canvas:, **_options, &block)

Supply just 1 multiplier to scale evenly, or x and y multipliers to stretch or squash the axies.

Examples:

scale(2) do
  triangle(30, at: [50, -50])
  pentagon(40, at: [50, -100])
end

Uneven scaling

scale(2, 0.5) do
  triangle(30, at: [50, -50])
  pentagon(40, at: [50, -100])
end

Parameters:

x_multiplier (Coord) —
+Num; a coordinate+. 1 is no change, 2 is double size, 0.5 is half, etc.
y_multiplier (Coord) (defaults to: x_multiplier) —
+Num; a coordinate+
canvas ([])
_options ([])
block (Proc)

# File 'lib/vector_salad/standard_shapes/scale.rb', line 24

def initialize(x_multiplier,
               y_multiplier = x_multiplier,
               canvas:, **_options, &block)
  instance_eval(&block) # inner_canvas is populated

  @canvas.each do |shape|
    canvas << shape.scale(x_multiplier, y_multiplier)
  end
end

Dynamic Method Handling