From 2e0ea01b1e2a18f58b290bbab6c6731428acd3de Mon Sep 17 00:00:00 2001
From: sumi <sumi@local>
Date: Sun, 11 Jan 2026 17:27:32 -0600
Subject: [PATCH] automated snapshot

---
 blinds.go        | 54 ++++++++++++++++++++++++++++++++++++++++++++++++
 contour_layer.go |  2 +-
 main.go          |  7 ++++---
 3 files changed, 59 insertions(+), 4 deletions(-)
 create mode 100644 blinds.go

diff --git a/blinds.go b/blinds.go
new file mode 100644
index 0000000..3234722
--- /dev/null
+++ b/blinds.go
@@ -0,0 +1,54 @@
+package main
+
+import (
+	sg "github.com/d2fn/sumi/internal/graphics"
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+type BlindsLayer struct {
+	Field Field
+	Dirty bool
+}
+
+func NewBlindsLayer(field Field) *BlindsLayer {
+	return &BlindsLayer {
+		Field: field,
+		Dirty: true,
+	}
+}
+
+func (l *BlindsLayer) Draw(env *Env, g *sg.Graphics) {
+
+	rowHeight := float32(10.0)
+	rows := int32(g.Bounds.Height / rowHeight)
+
+	g.Clear()
+
+	c := rl.White
+	c.A = 100
+
+	g.SetStrokeColor(c)
+	g.SetStrokeWeight(1.0)
+	y := float32(10.0)
+	for range rows {
+		for x := 10; x < int(g.Width()) - 10; x++ {
+			fieldValue := l.Field.Get(float32(x), float32(y))
+			strokeHeight := rl.Remap(fieldValue, 0.0, 1.0, 0.0, rowHeight * 1.3)
+			a := sg.Point { X: float32(x), Y: float32(y) - strokeHeight / 2.0 }
+			b := sg.Point { X: float32(x), Y: float32(y) + strokeHeight / 2.0 }
+			g.DrawLine(a, b)
+		}
+		y += rowHeight 
+	}
+
+	l.Dirty = false
+}
+
+func (l *BlindsLayer) Update(env *Env, g *sg.Graphics) {
+
+}
+
+func (l *BlindsLayer) IsDirty() bool {
+	return l.Dirty
+}
+
diff --git a/contour_layer.go b/contour_layer.go
index dfe8bc2..6ac4121 100644
--- a/contour_layer.go
+++ b/contour_layer.go
@@ -19,7 +19,7 @@ type ContourLayer struct {
 	hiActorAngle float32
 }
 
-func NewContourLayer(sketch *Sketch, rng *rand.Rand, field Field, color color.RGBA, loActorAngle float32, hiActorAngle float32) *ContourLayer {
+func NewContourLayer(rng *rand.Rand, field Field, color color.RGBA, loActorAngle float32, hiActorAngle float32) *ContourLayer {
 
 	maxActors := 200000
 
diff --git a/main.go b/main.go
index 08d9f83..5d01e8f 100644
--- a/main.go
+++ b/main.go
@@ -127,7 +127,7 @@ func main() {
 				},
 		}
 
-	sierpinskiLayer := &SierpinskiArrow { dirty: true }
+	//sierpinskiLayer := &SierpinskiArrow { dirty: true }
 
 	sketch := NewSketch(env)
 
@@ -142,9 +142,10 @@ func main() {
 	actorColor := color.RGBA { R: 10, G: 58, B: 59, A: 25 }
 	fmt.Printf("actor color = %v\n", actorColor)
 
-	contourLayer := NewContourLayer(&sketch, rng, field, actorColor, -12*math.Pi, 12*math.Pi)
+	contourLayer := NewContourLayer(rng, field, actorColor, -12*math.Pi, 12*math.Pi)
 	sketch.AddLayer("contours", contourLayer)
-	sketch.AddLayer("sierpinski-arrowhead", sierpinskiLayer)
+	sketch.AddLayer("blinds", NewBlindsLayer(field))
+	//sketch.AddLayer("sierpinski-arrowhead", sierpinskiLayer)
 	//	aurora := NewImageLayer("/home/d/Dropbox/photos/Events/2025/Aurora/Photo Nov 11 2025, 9 52 03 PM.jpg")
 	//	sketch.AddLayer("aurora", aurora)
 	//	cave := NewImageLayer("/home/d/Dropbox/photos/Events/2025/ Chelsea and James visit Lindell/Photo Nov 29 2025, 5 26 40 PM (29).jpg")