segments->painter :: target is not an object about sicp HOT 6 CLOSED

Thanks for fixing this.

from sicp.

The procedure paint calls the painter with its own frame (unit vectors along the first and second axis), so when using paint you don't need to supply a frame.

However the error message you see is misleading, so we need to fix the error message.

#lang sicp
(#%require sicp-pict)

(define tl (make-vect  0 1))
(define tr (make-vect  1 1))
(define bl (make-vect  0 0))
(define br (make-vect  1 0))

(define segments
  (vects->segments
   (list bl tl tr br bl)))

(define origin (make-vect 0 0))
(define frame (make-frame origin tl br))

(paint (segments->painter segments))

from sicp.

Btw - sicp-pict is meant to be used like this:

#lang racket
(require sicp-pict)

from sicp.

@soegaard thanks a lot for the clarification.

About using #lang sicp, it was taken from the Examples section in Racket docs.

from sicp.

Hmm. Maybe it works fine in #lang sicp too?

I reopened the issue - we still need to improve the error message.

from sicp.

They seem to work fine with sicp as language, I've did the previous exercises like implementations of square-limit and corner-split without any problems.

from sicp.