Contracts for Image-Producing Functions

Log into code.pyret.org (CPO) and click "Run". Experiment with each of the functions listed below, trying to find an expression that will build. Record the contract and example code for each function you are able to successfully build!

Name Domain Range

Name		Domain		Range
`triangle`	`::`	`Number, String, String`	`->`	`Image`
`triangle(80, "solid", "darkgreen")`
`star`	`::`		`->`

`circle`	`::`		`->`

`rectangle`	`::`		`->`

`text`	`::`		`->`

`square`	`::`		`->`

`ellipse`	`::`		`->`

`regular-polygon`	`::`		`->`

triangle

::

Number, String, String

->

Image

triangle(80, "solid", "darkgreen")

star

::

->

circle

::

->

rectangle

::

->

text

::

->

square

::

->

ellipse

::

->

regular-polygon

::

->

Challenge: Composing with Circles of Evaluation

What if we wanted to see your name written on a diagonal?

We know that we can use the text function to make an Image of your name.
Pyret also has a function called rotate that will rotate any Image a specified number of degrees.

# rotate :: Number, Image -> Image

But how could the rotate and text functions work together? Draw a Circle of Evaluation, translate it to code and test it out in the Editor!

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