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package main
import (
"io/fs"
"io/ioutil"
"github.com/faiface/pixel"
"github.com/faiface/pixel/pixelgl"
"go.wit.com/log"
)
// Pixel Shader utility functions
// EasyBindUniforms does all the work for you, just pass in a
// valid array adhering to format: String, Variable, ...
//
// example:
//
// var uTimeVar float32
// var uMouseVar mgl32.Vec4
//
// EasyBindUniforms(win.GetCanvas(),
// "u_time", &uTimeVar,
// "u_mouse", &uMouseVar,
// )
func EasyBindUniforms(c *pixelgl.Canvas, unifs ...interface{}) {
if len(unifs)%2 != 0 {
panic("needs to be divisable by 2")
}
for i := 0; i < len(unifs); i += 2 {
c.SetUniform(unifs[i+0].(string), unifs[i+1])
}
}
// CenterWindow will... center the window
func CenterWindow(win *pixelgl.Window) {
x, y := pixelgl.PrimaryMonitor().Size()
width, height := win.Bounds().Size().XY()
win.SetPos(
pixel.V(
x/2-width/2,
y/2-height/2,
),
)
}
// LoadFileToString loads the contents of a file into a string
func LoadFileToString(filename string) (string, error) {
embedf, err1 := fs.ReadFile(glFile, filename)
if err1 == nil {
log.Println("found embedded file:", filename)
return string(embedf), nil
} else {
log.Println("did not find embedded file:", filename)
log.Println("err", err1)
}
b, err := ioutil.ReadFile("/tmp/" + filename)
if err != nil {
return "", err
}
return string(b), nil
}
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