add get schematic bounds method

lib/sch/get-schematic-bounds-from-circuit-json.ts

@@ -0,0 +1,64 @@
+import type { AnyCircuitElement } from "circuit-json"
+
+interface Bounds {
+  minX: number
+  minY: number
+  maxX: number
+  maxY: number
+}
+
+export function getSchematicBoundsFromCircuitJson(
+  soup: AnyCircuitElement[],
+  padding = 0.5,
+): Bounds {
+  let minX = Number.POSITIVE_INFINITY
+  let minY = Number.POSITIVE_INFINITY
+  let maxX = Number.NEGATIVE_INFINITY
+  let maxY = Number.NEGATIVE_INFINITY
+
+  const portSize = 0.2
+
+  // Find the bounds
+  for (const item of soup) {
+    if (item.type === "schematic_component") {
+      updateBounds(item.center, item.size, item.rotation || 0)
+    } else if (item.type === "schematic_port") {
+      updateBounds(item.center, { width: portSize, height: portSize }, 0)
+    } else if (item.type === "schematic_debug_object") {
+      if (item.shape === "rect") {
+        updateBounds(item.center, item.size, 0)
+      } else if (item.shape === "line") {
+        updateBounds(item.start, { width: 0.1, height: 0.1 }, 0)
+        updateBounds(item.end, { width: 0.1, height: 0.1 }, 0)
+      }
+    }
+  }
+
+  // Add padding to bounds
+  minX -= padding
+  minY -= padding
+  maxX += padding
+  maxY += padding
+
+  return { minX, minY, maxX, maxY }
+
+  function updateBounds(center: any, size: any, rotation: number) {
+    const corners = [
+      { x: -size.width / 2, y: -size.height / 2 },
+      { x: size.width / 2, y: -size.height / 2 },
+      { x: size.width / 2, y: size.height / 2 },
+      { x: -size.width / 2, y: size.height / 2 },
+    ]
+
+    for (const corner of corners) {
+      const rotatedX =
+        corner.x * Math.cos(rotation) - corner.y * Math.sin(rotation) + center.x
+      const rotatedY =
+        corner.x * Math.sin(rotation) + corner.y * Math.cos(rotation) + center.y
+      minX = Math.min(minX, rotatedX)
+      minY = Math.min(minY, rotatedY)
+      maxX = Math.max(maxX, rotatedX)
+      maxY = Math.max(maxY, rotatedY)
+    }
+  }
+}