Add support for ulab.numpy float vectors in Vertex2f()

Using numpy greatly increases graphics drawing for complex geometry.

Author: jamesbowman

shared-bindings/_eve/__init__.c

@@ -11,6 +11,9 @@
 #include "py/runtime.h"
 #include "py/binary.h"
 
+#include "extmod/ulab/code/ulab.h"
+#include "extmod/ulab/code/ndarray.h"
+
 #include "shared-module/_eve/__init__.h"
 #include "shared-bindings/_eve/__init__.h"
 
@@ -844,6 +847,17 @@ static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(vertex2ii_obj, 3, 5, _vertex2ii);
 
 // }
 
+static bool is_vector(mp_obj_t a) {
+    if(!mp_obj_is_type(a, &ulab_ndarray_type)) {
+        return false;
+    }
+    ndarray_obj_t *ndarray = MP_OBJ_TO_PTR(a);
+    if (!ndarray_is_dense(ndarray)) {
+        mp_raise_TypeError(MP_ERROR_TEXT("input must be an ndarray"));
+    }
+    return true;
+}
+
 // Hand-written functions {
 
 //|     def Vertex2f(self, b: float) -> None:
@@ -853,9 +867,19 @@ static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(vertex2ii_obj, 3, 5, _vertex2ii);
 //|         :param float y: pixel y-coordinate"""
 //|         ...
 static mp_obj_t _vertex2f(mp_obj_t self, mp_obj_t a0, mp_obj_t a1) {
-    mp_float_t x = mp_obj_get_float(a0);
-    mp_float_t y = mp_obj_get_float(a1);
-    common_hal__eve_Vertex2f(EVEHAL(self), x, y);
+    if(is_vector(a0) && is_vector(a1)) {
+        ndarray_obj_t *v0 = MP_OBJ_TO_PTR(a0);
+        ndarray_obj_t *v1 = MP_OBJ_TO_PTR(a1);
+        mp_float_t *p0 = (mp_float_t *)v0->array;
+        mp_float_t *p1 = (mp_float_t *)v1->array;
+        for(size_t i=0; i < v0->len; i++, p0++, p1++) {
+            common_hal__eve_Vertex2f(EVEHAL(self), *p0, *p1);
+        }
+    } else {
+      mp_float_t x = mp_obj_get_float(a0);
+      mp_float_t y = mp_obj_get_float(a1);
+      common_hal__eve_Vertex2f(EVEHAL(self), x, y);
+    }
     return mp_const_none;
 }
 static MP_DEFINE_CONST_FUN_OBJ_3(vertex2f_obj, _vertex2f);