20 lines
No EOL
745 B
Text
20 lines
No EOL
745 B
Text
/*
|
|
contributors: Patricio Gonzalez Vivo
|
|
description: "It center the coordinates from 0 to 1 to -1 to 1\nSo the center goes\
|
|
\ from 0.5 to 0.0. \n"
|
|
use: <float|float2|float3> center(<float|float2|float3> st)
|
|
examples:
|
|
- https://raw.githubusercontent.com/patriciogonzalezvivo/lygia_examples/main/draw_shapes.frag
|
|
license:
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
|
|
*/
|
|
|
|
#ifndef FNC_CENTER
|
|
#define FNC_CENTER
|
|
|
|
float center(float x) { return x * 2.0 - 1.0; }
|
|
float2 center(float2 v) { return v * 2.0 - 1.0; }
|
|
float3 center(float3 v) { return v * 2.0 - 1.0; }
|
|
|
|
#endif |