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closes PR 10929

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Robby Findler 2010-05-25 17:33:53 -05:00
parent bae79dda0b
commit 48d793b099
1 changed files with 3 additions and 3 deletions
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6
collects/teachpack/2htdp/scribblings/image.scrbl
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@ -300,7 +300,7 @@ other. The top and bottom pair of angles is @scheme[angle] and the left and righ
(make-pen "darkslategray" 10 "solid" "projecting" "miter")))]
}
@defproc[(line [x1 real?] [y1 real?] [color image-color?]) image?]{
@defproc[(line [x1 real?] [y1 real?] [pen-or-color (or/c pen? image-color?)]) image?]{
Constructs an image representing a line segment that connects the points
(0,0) to (x1,y1).
@ -312,7 +312,7 @@ other. The top and bottom pair of angles is @scheme[angle] and the left and righ
@defproc[(add-line [image image?]
[x1 real?] [y1 real?]
[x2 real?] [y2 real?]
[color image-color?])
[pen-or-color (or/c pen? image-color?)])
image?]{
Adds a line to the image @scheme[image], starting from the point (@scheme[x1],@scheme[y1])
@ -333,7 +333,7 @@ other. The top and bottom pair of angles is @scheme[angle] and the left and righ
@defproc[(add-curve [image image?]
[x1 real?] [y1 real?] [angle1 angle?] [pull1 real?]
[x2 real?] [y2 real?] [angle2 angle?] [pull2 real?]
[color image-color?])
[pen-or-color (or/c pen? image-color?)])
image?]{
Adds a curve to @scheme[image], starting at the point