Platform
Resources
Pricing
Sign in
Get started
Youjin Shin | 신유진
Data Visualization Specialist | Previously @WashingtonPost @WallStreetJournal @MITSenseableCity
Workspace
Fork
Public
regl
By
Youjin Shin | 신유진
Edited
Jun 5, 2024
Insert cell
Insert cell
Insert cell
Insert cell
canvas
=
DOM
.
canvas
(
width
,
500
)
Insert cell
regl
.
clear
(
{
color
:
[
1
,
1
,
1
,
1
]
,
depth
:
1
}
)
Insert cell
// lineWidth = Math.max(3, regl.limits.lineWidthDims[1])
// lineWidth = Math.min(1, Math.max(3, regl.limits.lineWidthDims[1]))
Insert cell
drawLines
(
)
Insert cell
drawLines
=
regl
(
{
vert
:
`
precision mediump float;
attribute vec2 position;
void main() {
gl_Position = vec4(position, 0, 1);
}`
,
frag
:
`
precision mediump float;
uniform vec4 color;
void main() {
gl_FragColor = color;
}`
,
attributes
:
{
//5 개의 정점 위치
position
:
linePos
}
,
uniforms
:
{
color
:
[
1
,
0
,
0
,
1
]
}
,
elements
:
[
[
0
,
1
]
,
// 0번 정점과 1번 정점을 연결
[
1
,
2
]
,
// 1번 정점과 2번 정점을 연결
[
2
,
3
]
,
// 2번 정점과 3번 정점을 연결
[
3
,
4
]
,
// 3번 정점과 4번 정점을 연결
[
0
,
3
]
,
[
0
,
2
]
// [4, 0] // 4번 정점과 0번 정점을 연결
]
,
lineWidth
:
1
}
)
Insert cell
Insert cell
linePos
=
new
Array
(
5
)
.
fill
(
)
.
map
(
(
_
,
i
)
=>
{
var
theta
=
(
2.0
*
Math
.
PI
*
i
)
/
5
;
return
[
Math
.
sin
(
theta
)
,
Math
.
cos
(
theta
)
]
;
}
)
Insert cell
Insert cell
regl
=
(
await
import
(
"https://cdn.skypack.dev/regl@2"
)
)
.
default
(
{
canvas
}
)
Insert cell
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
Try it for free
Learn more
Fork
View
Export
Edit
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
Edit
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
Edit
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
canvas
Unpin
Add comment
Copy import
Select
Duplicate
Copy link
Embed
Delete
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
drawLines
Add comment
Copy import
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
Edit
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
linePos
Unpin
Add comment
Copy import
Select
Duplicate
Copy link
Embed
Delete
Edit
Add comment
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
regl
Add comment
Copy import
Select
Duplicate
Copy link
Embed
Delete
JavaScript
Markdown
HTML
JavaScript
Markdown
HTML
JavaScript
Markdown
HTML