automated snapshot

field.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"github.com/ojrac/opensimplex-go"
+)
+
+type Field interface {
+	/**
+	 * return a value on the range 0,1
+	 */
+	Get(x float32, y float32) float32
+}
+
+// TRANSFORM FIELDS
+type ScaleField struct {
+	Scale float32
+	Field Field
+}
+
+func (f *ScaleField) Get(x, y float32) float32 {
+	return f.Field.Get(x / f.Scale, y / f.Scale)
+}
+
+// NOISE FIELDS
+
+type SimplexNoiseField struct {
+	Noise opensimplex.Noise32
+}
+
+func (f *SimplexNoiseField) Get(x, y float32) float32 {
+	return f.Noise.Eval2(x, y)
+}
+