use shape_circle

docs/lib2x-along_with.md

@@ -13,11 +13,11 @@ Puts children along the given path. If there's only one child, it will put the c
 ## Examples
 
 	use <along_with.scad>;
-	use <circle_path.scad>;
+	use <shape_circle.scad>;
 	
 	$fn = 24;
 	
-	points = circle_path(radius = 50);
+	points = shape_circle(radius = 50);
 	
 	along_with(points) 
 	    sphere(5);
@@ -25,11 +25,11 @@ Puts children along the given path. If there's only one child, it will put the c
 ![along_with](images/lib-along_with-1.JPG)
 
 	use <along_with.scad>;
-	use <circle_path.scad>;
+	use <shape_circle.scad>;
 
 	$fn = 24;
 
-	points = circle_path(radius = 50);
+	points = shape_circle(radius = 50);
 
 	along_with(points) {
 		linear_extrude(10, center = true) text("A", valign = "center", halign = "center");

docs/lib2x-golden_spiral_extrude.md

@@ -38,14 +38,14 @@ When using this module, you should use points to represent the 2D shape. If your
 
 ![golden_spiral_extrude](images/lib-golden_spiral_extrude-1.JPG)
 
-    use <circle_path.scad>;
+    use <shape_circle.scad>;
 	use <golden_spiral_extrude.scad>;
 
 	$fn = 12;
 
 	shape_pts = concat(
-		circle_path(radius = 3),
+		shape_circle(radius = 3),
-		circle_path(radius = 2)
+		shape_circle(radius = 2)
 	);
 
 	golden_spiral_extrude(

docs/lib2x-shape_circle.md

@@ -0,0 +1,29 @@
+# shape_circle
+
+Sometimes you need all points on the path of a circle. Here's the function. Its `$fa`, `$fs` and `$fn` parameters are consistent with the `circle` module.
+
+## Parameters
+
+- `radius` : The radius of the circle.
+- `n` : The number of points you want. It's not greater than the fragments of the circle.
+- `$fa`, `$fs`, `$fn` : Check [the circle module](https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_the_2D_Subsystem#circle) for more details.
+
+## Examples
+
+    use <shape_circle.scad>;
+
+	$fn = 24;
+	
+	points = shape_circle(radius = 50);
+	polygon(points);
+	
+	leng = len(points);
+	step_angle = 360 / leng;
+	for(i = [0:leng - 1]) {
+	    translate(points[i]) 
+	        rotate([90, 0, 90 + i * step_angle]) 
+	            linear_extrude(1, center = true) 
+	                text("A", valign = "center", halign = "center");
+	}
+
+![shape_circle](images/lib-shape_circle-1.JPG)

docs/lib2x-shape_path_extend.md

@@ -14,13 +14,13 @@ When using this function, you should use points to represent the 2D stroke.
 ## Examples
 
 	use <shape_path_extend.scad>;
-	use <circle_path.scad>;
+	use <shape_circle.scad>;
 	use <archimedean_spiral.scad>;
 	
 	$fn = 96;
 	
 	stroke1 = [[-5, 2.5], [-2.5, 0], [0, 2.5], [2.5, 0], [5, 2.5]];
-	path_pts1 = circle_path(50, 60);
+	path_pts1 = shape_circle(50, 60);
     polygon(
 	    shape_path_extend(stroke1, path_pts1)
     );