pulled out from my fork of upstream repo

1 files changed, 54 insertions, 0 deletions

diff --git a/psutil.go b/psutil.go
new file mode 100644
index 0000000..2fb370e
--- /dev/null
+++ b/psutil.go
@@ -0,0 +1,54 @@
+package main
+
+import (
+	"io/ioutil"
+
+	"github.com/faiface/pixel"
+	"github.com/faiface/pixel/pixelgl"
+)
+
+// 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) {
+	b, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return "", err
+	}
+	return string(b), nil
+}