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rectangle-corners.red
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rectangle-corners.red
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Red [
Title: "rectangle-corners.red"
]
Article: [
Title: {rectangle corners}
Source: [
.title: {ReAdABLE Source [(What is the ReAdABLE Human Format?)](http://readablehumanformat.com)}
.text: {[http://mycodesnippets.space/redlang/draw/rectangle-corners.red](https://github.com/lepinekong/mycodesnippets/blob/master/redlang/draw/rectangle-corners.red)
}
.Published-Url: http://mycodesnippets.space/redlang/draw/rectangle-corners
]
demo: [
.title: {Demo}
.text: {Type in [red-lang](https://www.red-lang.org/p/download.html) console: }
.quote: {do read http://mycodesnippets.space/redlang/draw/src/rectangle-corners.red}
.image: https://i.imgur.com/iI3Q3U2.png
]
code-snippet: [
.title: {Code Snippet}
.image: https://i.imgur.com/Eqeyxop.png
.links: [
{View source} https://github.com/lepinekong/mycodesnippets/blob/master/redlang/draw/src/rectangle-corners.red
{Copy source} https://raw.githubusercontent.com/lepinekong/mycodesnippets/master/redlang/draw/src/rectangle-corners.red
]
.code/red: {
;you can also call
;do read https://redlang.red/rectangles
;instead of pasting code snippet for the functions
rectangle: function [/rounded /inverted][
shape-layout: copy [[]]
shape-layout/1: copy [] ; must do this otherwise will append to previous content
either rounded [
angle-size: 5.0
rect-rounded-width: 100 - (2 * angle-size)
rect-rounded-height: 50 - (2 * angle-size)
either inverted [
; for inverted rounded rectangle
angles: compose [
(make pair! reduce [angle-size angle-size]) ; 5x5
(make pair! reduce [0 - angle-size angle-size]) ;-5x5
(make pair! reduce [0 - angle-size 0 - angle-size]) ;-5x-5
(make pair! reduce [angle-size 0 - angle-size]) ;5x-5
]
append shape-layout/1 compose/deep [
'move (make pair! reduce [angle-size 0]) ; to adjust pen position for next shape
'hline (rect-rounded-width)
'arc (angles/1) (angle-size) (angle-size) (rect-rounded-width) ; no sweep for negative angle
'vline (rect-rounded-height)
'arc (angles/2) (angle-size) (angle-size) (rect-rounded-width)
'hline (0 - rect-rounded-width)
'arc (angles/3) (angle-size) (angle-size) (rect-rounded-width)
'vline (0 - rect-rounded-height)
'arc (angles/4) (angle-size) (angle-size) (rect-rounded-width)
'move (make pair! reduce [0 - angle-size 0]) ; to adjust pen position for next shape
]
][
; for (non-inverted) rounded rectangle
angles: compose [
(make pair! reduce [angle-size angle-size]) ; 5x5
(make pair! reduce [0 - angle-size angle-size]) ;-5x5
(make pair! reduce [0 - angle-size 0 - angle-size]) ;-5x-5
(make pair! reduce [angle-size 0 - angle-size]) ;5x-5
]
append shape-layout/1 compose/deep [
'move (make pair! reduce [angle-size 0]) ; to adjust pen position for next shape
'hline (rect-rounded-width)
'arc (angles/1) (angle-size) (angle-size) (rect-rounded-width) sweep ; sweep needed for positive angle
'vline (rect-rounded-height)
'arc (angles/2) (angle-size) (angle-size) (rect-rounded-width) sweep
'hline (0 - rect-rounded-width)
'arc (angles/3) (angle-size) (angle-size) (rect-rounded-width) sweep
'vline (0 - rect-rounded-height)
'arc (angles/4) (angle-size) (angle-size) (rect-rounded-width) sweep
'move (make pair! reduce [0 - angle-size 0]) ; to adjust pen position for next shape
]
]
][
append shape-layout/1 compose/deep [
'hline 100
'vline 50
'hline -100
'vline -50
]
]
compose/deep [shape (shape-layout)]
]
margin: function ['.margin-value [integer! unset!]][
switch type?/word get/any '.margin-value [
unset! [
left-margin-value: 100
right-margin-value: 50
]
integer! [
left-margin-value: .margin-value
right-margin-value: .margin-value
]
]
shape-layout: copy [[]]
shape-layout/1: copy [] ; must do this otherwise will append to previous content
append shape-layout/1 compose/deep [
;'move 100x100 ; left-margin = right-margin
'move (make pair! reduce [left-margin-value right-margin-value])
]
compose/deep [shape (shape-layout)]
]
win: compose/deep [
title {rectangle corners demo}
base (800x480) white draw [
pen black
(margin 10)
(rectangle)
(margin)
(rectangle/rounded)
(margin)
(rectangle/rounded/inverted)
]
]
;un-comment to see generated drawing commands
;?? win
;write-clipboard mold win
view layout win
}
]
]
do read http://readablehumanformat.com/lib.red
markdown-gen