automated snapshot

sketch.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"github.com/gen2brain/raylib-go/raylib"
+)
+
+type Sketch interface {
+	Draw(ctx *RenderCtx)
+}
+
+/** Ports **/
+
+type Ports map[string]Signal
+
+func MakePorts() Ports {
+	return make(Ports)
+}
+
+/**
+ * materialize current value for all ports
+ **/
+func (p Ports) Eval(t float64) map[string]float64 {
+	out := make(map[string]float64, len(p))
+	for name, sig := range(p) {
+		out[name] = sig.Eval(t)
+	}
+	return out
+}
+
+/** RenderCtx **/
+
+type RenderCtx struct {
+	Width int32
+	Height int32
+	Time float64
+	Ports map[string]float64
+	Cam rl.Camera2D
+}
+