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import bmesh
def normalize_selected():
  m = bpy.context.active_object.data # get selected object's mesh
  bm = bmesh.new()   # create an empty BMesh
  bm.from_mesh(m)   # fill it in from a Mesh
  for v in bm.verts:
    if v.select:
      v.co.normalize()
  bm.to_mesh(m)
  

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def selected_vertex():
  for vert in bpy.context.selected_objects[0].data.vertices:
    if vert.select:
      return vert;
  return None
  

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# The following function is adapted from 
# Nick Keeline "Cloud Generator" addNewObject 
# from object_cloud_gen.py (an addon that comes with the Blender 2.6 package)

# Create a clone of object "coypobj" at all vertices in the "verticesFrom" object
# Usage example: cloneAtVertices(bpy.context.scene, bpy.data.objects['ball'], bpy.data.objects['positions'])
def cloneAtVertices(scene, copyobj, verticesFrom):
    index = 0;
    for v in verticesFrom.data.vertices:
        index = index + 1

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# A blender script that creates a triangular grid of different blends of three meshes
# of identical topology in a triangle. 
#
# 'a', 'b', and 'c' are the meshes to be blended. 
# 'n' is the "height" of the triangle
# 'side' is the length of the side of the triangle in which the
# blended meshes will be arranged
def blendingTriangle(scene, a, b, c, n, side):
    index = 0;
    # the vertices of the positions

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// Make sure to add references to Newtonsoft.Json.dll and System.Core.dll into Tools\Options\Scripting\References
// e.g., C:\Windows\Microsoft.NET\Framework64\v4.0.30319\System.Core.dll;C:\Users\username\AppData\Local\Programs\Fiddler\Newtonsoft.Json.dll
public static void OnBeforeResponse(Session oSession)
{
    if (m_Hide304s && oSession.responseCode == 304)
    {
        oSession["ui-hide"] = "true";
    }

    if (oSession.oRequest.host == "www.myhost.com" &&

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function download(url, name) {
    fetch(url)
    .then(resp => resp.blob())
    .then(blob => {
        const url = window.URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.style.display = 'none';
        a.href = url;
        a.download = name;
        document.body.appendChild(a);

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#ifndef WaterSineSeries
#define WaterSineSeries

// Based on GPU GEMS, Chapter 1: Effective Water Simulation from Physical Models
// https://developer.download.nvidia.com/books/HTML/gpugems/gpugems_ch01.html

#define TWO_PI 6.2831853

/**
 * x,y: coordinates

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double2 cartesianToPolar(double2 z)
{
    return double2(length(z), atan2(z.y, z.x));
}

double2 polarToCartesian(double2 p)
{
    return double2(p.x * cos(p.y), p.x * sin(p.y));
}

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float loopWithPause(float scale) {
   // sinusoidal, with a short pause at start/end
   float overshoot = 1.5;
   
   // iTime is a variable available in shadertoy.com
   // Replace with your own variable as needed
   float t = iTime * scale; // scale time here
   float a = clamp((mod(t, 2.0) - 1.0) * overshoot, -1.0, 1.0);
   return sin(a * PI);
}

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vec2 clamp(vec2 p) {
  return clamp(p, 0, 1);
}

vec2 repeat(vec2 p) {
  return fract(p);
}

vec2 mirrorRepeat(vec2 p) {
  vec2 q = fract(p * 0.5) * 2.0;