This program launches a window and a localhost daemon that listens on 8080 for a json packet.
The server requires faiface/pixel, so go get it go get github.com/faiface/pixel The client requires nothing (it's just a json prep helper, you can talk to the server from anything that speaks http).
If you supply a scene packet like
{
"b": {"e":[{"r":[50,50,500,51]}]},
"f":[
{"e":[{"r":[100,200,300,400]}]},
{"e":[{"c":{"n":"color","v":"1,0,0"}},{"r":[150,250,350,450]}]}
]
}
It will draw a baseframe with a single pixel high, wide rectangle, and add two frames to the scene. The first of the two will draw a black square. The second will draw a red square 50 pixels offset diagonally.
Using left right keys you can move between frames. Use mouse scroll to zoom. Use Z to to return to a default camera location. Use WASD to pan.
Other command elements like color {"c":{"n":"color","v":"1,0,0"}} are:
- thickness, 0 is filled, above that will be converted to a float and used as faiface/pixel uses thickness
- color, RGB three floats between 0-1, default color is black
- shape: rectangle (default), or circle ** if you change to circle, then a region element {"r":[150,250,350,450]} is interpreted as circle centered at 150,250, with ellipse radii 350,450. To make a true circle, set the third and fourth to the same radius.
Example scenes I pushed from client programs are like:
Advent Of Code 2018 Day 17 https://adventofcode.com/2018/day/17
Advent Of Code 2018 Day 18 https://adventofcode.com/2018/day/18
Advent Of Code 2018 Day 20 https://adventofcode.com/2018/day/20
Advent Of Code 2018 Day 22 https://adventofcode.com/2018/day/22 - Visual example of zooming while capturing this
