From 206d0e598adb66e2b23a39a7d11e2f5087513205 Mon Sep 17 00:00:00 2001
From: warriorofwire <3454741+WarriorOfWire@users.noreply.github.com>
Date: Sat, 2 May 2020 02:21:35 -0700
Subject: Add vectorio: for drawing shapes

vectorio builds on m4 express feather

Concrete shapes are composed into a VectorShape which is put into a displayio Group for display.

VectorShape provides transpose and x/y positioning for shape implementations.

Included Shapes:

* Circle
  - A radius; Circle is positioned at its axis in the VectorShape.
  - You can freely modify the radius to grow and shrink the circle in-place.

* Polygon
  - An ordered list of points.
  - Beteween each successive point an edge is inferred.  A final edge closing the shape is inferred between the last
    point and the first point.
  - You can modify the points in a Polygon.  The points' coordinate system is relative to (0, 0) so if you'd like a
      top-center justified 10x20 rectangle you can do points [(-5, 0), (5, 0), (5, 20), (0, 20)] and your VectorShape
      x and y properties will position the rectangle relative to its top center point

* Rectangle
  A width and a height.
---
 shared-module/vectorio/__init__.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 shared-module/vectorio/__init__.h

(limited to 'shared-module/vectorio/__init__.h')

diff --git a/shared-module/vectorio/__init__.h b/shared-module/vectorio/__init__.h
new file mode 100644
index 000000000..6ae381f06
--- /dev/null
+++ b/shared-module/vectorio/__init__.h
@@ -0,0 +1,15 @@
+#ifndef MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_INIT_H
+#define MICROPY_INCLUDED_SHARED_MODULE_VECTORIO_INIT_H
+
+#include "py/obj.h"
+
+typedef void event_function(mp_obj_t obj);
+
+typedef struct {
+    mp_obj_t obj;
+    event_function *event;
+} vectorio_event_t;
+
+
+#endif
+
-- 
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