Вопрос

I use the paperjs graphical objects library with Amber Smalltalk.

I want to translate the following Javascript constructors for a Point object to Amber Smalltalk

paper.Point(x, y)
paper.Point(array)
paper.Point(object)
paper.Point(size)
paper.Point(point) 

The following Smalltalk

paper Point new inspect

gives a point

{ x: 0, y: 0 } 

To construct an array in an Amber workspace I do

#(100 100)

The printIt is

 an Array (100 100) 

However

 paper Point value: #(100 100)    

gives nil as the result.

Question

How do I translate the paper.Point(array) constructor from JavaScript to Amber as well as the other constructurs?

References

  1. http://paperjs.org/reference/point/
  2. https://github.com/amber-smalltalk/amber/wiki/Wrapping-javascript-constructors-recipe
  3. Demo of translated code so far (contains fabricjs and svg.js examples as well)
Это было полезно?

Решение

The Amber Smalltalk equivalent of new paper.Paper(100,100) (JavaScript) is

paper Point newValue: 100 value: 100

This gives

 { x: 100, y: 100 } 

Reference

https://github.com/amber-smalltalk/amber/wiki/Call-javascript-constructors-with-arguments

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