[Bf-docboard-svn] bf-manual: [8893] trunk/blender_docs/manual: Geometry Nodes: Add curve Arc primitive

[Charlie Jolly]

Revision: 8893
          https://developer.blender.org/rBM8893
Author:   charlie
Date:     2022-01-27 16:05:23 +0100 (Thu, 27 Jan 2022)
Log Message:
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Geometry Nodes: Add curve Arc primitive

Modified Paths:
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    trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/index.rst

Added Paths:
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    trunk/blender_docs/manual/images/modeling_geometry-nodes_curve-primitives_arc_node.png
    trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/arc.rst

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Index: trunk/blender_docs/manual/images/modeling_geometry-nodes_curve-primitives_arc_node.png
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--- trunk/blender_docs/manual/images/modeling_geometry-nodes_curve-primitives_arc_node.png	2022-01-27 12:52:56 UTC (rev 8892)
+++ trunk/blender_docs/manual/images/modeling_geometry-nodes_curve-primitives_arc_node.png	2022-01-27 15:05:23 UTC (rev 8893)

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Added: trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/arc.rst
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--- trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/arc.rst	                        (rev 0)
+++ trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/arc.rst	2022-01-27 15:05:23 UTC (rev 8893)
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+.. index:: Geometry Nodes; Arc
+.. _bpy.types.GeometryNodeArc:
+
+*****************
+Arc Node
+*****************
+
+.. figure:: /images/modeling_geometry-nodes_curve-primitives_arc_node.png
+   :align: right
+
+   Arc Node.
+
+The *Arc* node generates a poly spline arc. The node has two modes, Radius and Points.
+
+
+Inputs
+======
+
+Resolution
+   Number of edges on the arc.
+
+Radius
+   The radius of the arc. *Radius* mode only.
+   
+Start Angle
+   Starting angle of the arc.  *Radius* mode only.
+
+Sweep Angle
+   Length of the arc.   *Radius* mode only.
+   
+Connect Center
+   Connect the arc at the center.  
+
+Invert Arc   
+   Invert and draw opposite arc.  
+
+Start, Middle, End
+   The three points on the arc. *Points* mode only.
+   The order of the points determines the direction (clockwise or counterclockwise) of the arc.
+   The arc will always draw from Start to End via the Middle point. This can be changed by using
+   the Invert Arc option.
+
+Offset Angle
+   Offset angle of the arc. *Points* mode only.
+
+.. note::
+
+   Because of the finite resolution, the middle point does not necessarily lie on the generated arc.
+
+
+Properties
+==========
+
+Mode
+   :Points:
+      The position and radius of the arc are determined by three points.
+      The center of the arc, radius and normal are also given as outputs.      
+   :Radius:
+      The arc is determined by the radius, start angle and sweep angle.
+
+
+Outputs
+=======
+
+Curve
+   Poly spline generated from the inputs.
+
+Center
+   The center of the arc described by the three points. *Points* mode only.
+Normal
+   The normal direction of the plane described by the three points, 
+   pointing towards the positive Z axis. *Points* mode only.
+Radius
+   The radius of the arc described by the three points. *Points* mode only.
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Modified: trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/index.rst
===================================================================
--- trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/index.rst	2022-01-27 12:52:56 UTC (rev 8892)
+++ trunk/blender_docs/manual/modeling/geometry_nodes/curve_primitives/index.rst	2022-01-27 15:05:23 UTC (rev 8893)
@@ -8,6 +8,7 @@
 .. toctree::
    :maxdepth: 1
 
+   arc.rst
    bezier_segment.rst
    curve_circle.rst
    curve_line.rst