Texture+Align

OpenAlign 1.1 Second Life Texture Alignment Script Copyright 2008 Ed Platt  SL: Phil Tracy

TOC: 1. Introduction 2. Tutorial

1. INTRODUCTION

OpenAlign is a Free, Open Source texture alignment script for Second Life. It works on any number of box prims with any scaling and positioning. OpenAlign also works on boxes that have been cut, or rotated by 90, 180, or 270 degrees. However, it has not been tested on hollow boxes or other prims.

Since this is free software, you do not need to pay for it, and you may modify and redistribute it (see the note COPYING for details). Of course, donations of L$ or US$ are more than welcome and will help the developers add new features! You can make a donation by visiting􀀀 and clicking the OpenAlign logo.

Let us know what you think of the script, and feel free to send requests for new features!

2. TUTORIAL

OpenAlign is compatible with existing texture alignment scripts. To use it, follow these steps:


 * Add the script to the inventory of each object you wish to align.
 * Link the objects, and set the desired textures on the root prim.
 * Type "/1 align" into the chat

Your prims should now be aligned! If you wish to remove the script from the prims, you may type "/1 remove". You are welcome to keep the script in any objects you sell or give away, but you must also include the COPYING note.

code // // OpenAlign 1.1 // Second Life Texture Alignment Script // Copyright 2008 Edward L. Platt // SL: Phil Tracy // E-mail:  // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // ////////////////////////////////////////////////////////////////////////

//// GLOBAL VARIABLES ////

// Script name in inventory string SCRIPT_NAME = "OpenAlign";

// Channel to listen on integer LISTEN_CHANNEL = 1;

// 1 for debug mode, 0 otherwise integer DEBUG = 0;

// Properties of root vector rootSize;       // Size vector rootPos;        // Position integer rootFaceCount; // Number of faces list rootTexScaleList; // Texture scales (width0,height0,width1...) vector rootCut;        // Cut

//// GLOBAL FUNCTIONS ////

// Joins string elements from a list with spaces // Calculate the modulus of a / b float mod(float a, float b) { return a/b - llFloor(a/b); }

// Broadcast a message on LISTEN_CHANNEL broadcast(string message) { if (DEBUG) { llSay(0, message); }   llSay(LISTEN_CHANNEL, message); }

// Get the position, width, and height of the cut faces list getCutParams(float cutBegin, float cutEnd, rotation q) {

integer beginQuad; // Quadrant cut begins in    integer endQuad;    // Quadrant cut ends in    vector size;        // Size of this object vector pos;        // Position of this object

vector beginPos;  // Begin face position vector endPos;    // End face position vector beginSize; // Size of begin face vector endSize;   // Size of end face

float angle; // Angle of the face (radians)

// Get size size = llList2Vector(llGetPrimitiveParams([PRIM_SIZE]),0);

// Calculate beginning face parameters angle = cutBegin * TWO_PI - PI*3.0/4.0; float x;   float y;

// Calculate the dimensions of the beginning face without scaling if (cutBegin < 0.25) { y = -0.5; x = y / llTan(angle); } else if (cutBegin >= 0.5 && cutBegin < 0.75) { y = 0.5; x = y / llTan(angle); } else if (cutBegin >= 0.25 && cutBegin < 0.5) { x = 0.5; y = x * llTan(angle); } else { x = -0.5; y = x * llTan(angle); }

// Calculate the width of the beginning face with scaling beginSize.x = llSqrt(size.x*size.x * x*x + size.y*size.y * y*y);

// Set the height of the beginning face beginSize.y = size.z;

// Calculate beginning face position beginPos = ; beginPos = beginPos * q;

// Calculate end face parameters angle = cutEnd * TWO_PI - PI*3.0/4.0;

// Calculate the dimensions of the end face without scaling if (cutEnd < 0.25) { y = -0.5; x = y / llTan(angle); } else if (cutEnd >= 0.5 && cutEnd < 0.75) { y = 0.5; x = y / llTan(angle); } else if (cutEnd >= 0.25 && cutEnd < 0.5) { x = 0.5; y = x * llTan(angle); } else { x = -0.5; y = x * llTan(angle); }

// Calculate the width of the end face with scaling endSize.x = llSqrt(size.x*size.x * x*x + size.y*size.y * y*y);

// Set the height of the end face endSize.y = size.z;

// Calculate beginning face position endPos = ; endPos = endPos * q;

return [beginPos, beginSize, endPos, endSize]; }

// Get face list from rotation list getFaceList(rotation q) {

vector rot;    // Rotation in Euler coordinates list faces;    // Indices of faces list newFaces; // Temporary indices of faces integer zRot;      // Number of 90 degree Z rotations integer yRot;      // Number of 90 degree Y rotations integer xRot;      // Number of 90 degree X rotations

// Get Euler coordinates rot = llRot2Euler(q);

// Initialize faces faces = [0, 1, 2, 3, 4, 5];

// Permute faces according to rotations in Z, Y, X order

// Adjust ranges zRot = (integer)llRound(rot.z / PI_BY_TWO); yRot = (integer)llRound(rot.y / PI_BY_TWO); xRot = (integer)llRound(rot.x / PI_BY_TWO); while (zRot < 0) { zRot += 4; }   while (yRot < 0) { yRot += 4; }   while (xRot < 0) { xRot += 4; }

// Permute faces for Z rotation while (zRot > 0) { newFaces = []; newFaces += llList2Integer(faces, 0); newFaces += llList2Integer(faces, 4); newFaces += llList2Integer(faces, 1); newFaces += llList2Integer(faces, 2); newFaces += llList2Integer(faces, 3); newFaces += llList2Integer(faces, 5); faces = newFaces; zRot--; }

// Permute faces for Y rotation while (yRot > 0) { newFaces = []; newFaces += llList2Integer(faces, 4); newFaces += llList2Integer(faces, 1); newFaces += llList2Integer(faces, 0); newFaces += llList2Integer(faces, 3); newFaces += llList2Integer(faces, 5); newFaces += llList2Integer(faces, 2); faces = newFaces; yRot--; }

// Permute faces for X rotation while (xRot > 0) { newFaces = []; newFaces += llList2Integer(faces, 3); newFaces += llList2Integer(faces, 0); newFaces += llList2Integer(faces, 2); newFaces += llList2Integer(faces, 5); newFaces += llList2Integer(faces, 4); newFaces += llList2Integer(faces, 1); faces = newFaces; xRot--; }

return faces; }

// Return the object face index of the specified global face // Faces are specified as "+x", "-y", "cutBegin", "cutEnd", etc. integer getFace(string face, vector cut, rotation q) {

// Variables representing whether a face is present // 1 is present, 0 is not, except for zp=0 which is always present integer xp = 1; // +x integer xm = 1; // -x integer yp = 1; // +y integer ym = 1; // -y integer zp = 0; // +z integer zm = 1; // -z integer cb = 1; // cut begin integer ce = 1; // cut end

list faces;        // List mapping global faces to object faces string mappedFace; // Local face, after global face rotated list faceOrder;    // The order of the faces

// Set face order faceOrder = ["+z", "-y", "+x", "+y", "-x", "-z", "cutBegin", "cutEnd"];

// Get face mapping faces = getFaceList(q);

// Map face if (face == "+z") { mappedFace = llList2String(faceOrder, llList2Integer(faces, 0)); } else if (face == "-y") { mappedFace = llList2String(faceOrder, llList2Integer(faces, 1)); } else if (face == "+x") { mappedFace = llList2String(faceOrder, llList2Integer(faces, 2)); } else if (face == "+y") { mappedFace = llList2String(faceOrder, llList2Integer(faces, 3)); } else if (face == "-x") { mappedFace = llList2String(faceOrder, llList2Integer(faces, 4)); } else if (face == "-z") { mappedFace = llList2String(faceOrder, llList2Integer(faces, 5)); } else { mappedFace = face; }

// Determine which faces have been cut away if (cut.x >= 0.25) { ym = 0; }   if (cut.x >= 0.5 || cut.y <= 0.25) { xp = 0; }   if (cut.x >= 0.75 || cut.y <= 0.5) { yp = 0; }   if (cut.y <= 0.75) { xm = 0; }   if (cut.x == 0 && cut.y == 1) { cb = 0; ce = 0; }

// Return face index, -1 if cut away if (mappedFace == "+x") { if (xp == 0) { return -1; }       return zp+ym+xp; } else if (mappedFace == "-x") { if (xm == 0) { return -1; }       return zp+ym+xp+yp+xm; } else if (mappedFace == "+y") { if (yp == 0) { return -1; }       return zp+ym+xp+yp; } else if (mappedFace == "-y") { if (yp == 0) { return -1; }       return zp+ym; } else if (mappedFace == "+z") { return zp; } else if (mappedFace == "-z") { return zp+ym+xp+yp+xm+zm; } else if (mappedFace == "cutBegin") { if (cb == 0) { return -1; }       return zp+ym+xp+yp+xm+zm+cb; } else if (mappedFace == "cutEnd") { if (ce == 0) { return -1; }       return zp+ym+xp+yp+xm+zm+cb+ce; }

// This should never happen return -1; }

// Get local size from global size and rotation vector getSize(vector size, rotation q) {

list faceList;  // Mapping from global to local faces vector newSize; // Size of  local dimensions integer face;   // Temporary face index

// Get face mapping faceList = getFaceList(q);

// Get local face for global x dimension face = llList2Integer(faceList, 2); if (face == 2 || face == 4) { newSize.x = size.x;   } if (face == 1 || face == 3) { newSize.x = size.y;   } if (face == 0 || face == 5) { newSize.x = size.z;   }

// Get local face for global y dimension face = llList2Integer(faceList, 3); if (face == 2 || face == 4) { newSize.y = size.x;   } if (face == 1 || face == 3) { newSize.y = size.y;   } if (face == 0 || face == 5) { newSize.y = size.z;   }

// Get local face for global y dimension face = llList2Integer(faceList, 0); if (face == 2 || face == 4) { newSize.z = size.x;   } if (face == 1 || face == 3) { newSize.z = size.y;   } if (face == 0 || face == 5) { newSize.z = size.z;   }

return newSize; }

// Initiates the entire alignment process align { if (llGetLinkNumber == 1) { // This is the root object, tell the other objects // about our position and texture scaling

integer faceCount; // Number of faces vector texScale;   // Texture scaling list texScaleList; // List of texture scales for each face list params;       // Primitive params vector cut;        // Cut

// Get object parameters cut = llList2Vector(llGetPrimitiveParams([PRIM_TYPE]),2); faceCount = llGetNumberOfSides;

// Broadcast root parameters broadcast("faceCount " + (string)faceCount); integer i;       for (i = 0; i < faceCount; i++) { texScale = llGetTextureScale(i); broadcast("texScale " + (string)texScale.x + " " + (string)texScale.y); }       broadcast("size " + llList2String(llGetPrimitiveParams([PRIM_SIZE]),0)); broadcast("cut " + (string)cut);

// Tell children to finish alignment broadcast("finish"); } else {

// Child object, reset root parameters rootFaceCount = 0; rootTexScaleList = []; } }

// Finish alignment by changing this object's properties finish {

vector size;         // Size vector globalSize;   // Size in global coordiantes vector pos;          // Position rotation rot;        // Rotation vector posOffset;    // Offset between this object and root object float rootTexScaleW; // Texture scale of root object (width) float rootTexScaleH; // Texture scale of root object (height) vector cut;          // Cut begin and end (in x and y)    list cutParams;       // Cut parameters list rootCutParams;  // Root cut params rotation rootRot;    // Root rotation vector rootGlobalSize; // Root size in global coordinates

vector cutBeginPos;  // Cut begin face position vector cutBeginSize; // Cut begin face size () vector cutEndPos;    // Cut end face position vector cutEndSize;   // Cut end face size ()

vector rootCutBeginPos;  // Root cut begin face position vector rootCutBeginSize; // Root cut begin face size () vector rootCutEndPos;    // Root cut end face position vector rootCutEndSize;   // Root cut end face size ()

integer face;     // Current face index integer rootFace; // Current root face index float widthOff;   // Texture W offset float heightOff;  // Texture H offset

float tileSize; float texScaleW; float texScaleH;

vector beginNormal;     // Beginning cut face normal vector endNormal;       // End cut face normal vector rootBeginNormal; // Beginning cut face normal for root object vector rootEndNormal;   // End cut face normal for root object vector cutOffset;       // Offset between two cut faces vector cutPlaneOffset;  // Offset in plane of face

// Exit if we are the root object if (llGetLinkNumber == 1) { return; }

// Get this object's properties posOffset = llGetLocalPos; pos = llGetPos; size = llList2Vector(llGetPrimitiveParams([PRIM_SIZE]),0); cut = llList2Vector(llGetPrimitiveParams([PRIM_TYPE]),2); rot = llGetRot; globalSize = getSize(size, rot); rootPos = llGetRootPosition; rootRot = llGetRootRotation; rootGlobalSize = getSize(rootSize, rootRot);

// Calculate this object's cut parameters cutParams = getCutParams(cut.x, cut.y, rot); cutBeginPos = pos + llList2Vector(cutParams,0); cutBeginSize = llList2Vector(cutParams,1); cutEndPos = pos + llList2Vector(cutParams,2); cutEndSize = llList2Vector(cutParams,3);

// Calculate root cut parameters rootCutParams = getCutParams(rootCut.x, rootCut.y, rootRot); rootCutBeginPos = rootPos + llList2Vector(rootCutParams,0); rootCutBeginSize = llList2Vector(rootCutParams,1); rootCutEndPos = rootPos + llList2Vector(rootCutParams,2); rootCutEndSize = llList2Vector(rootCutParams,3);

// Calculate normals using cross product (%) beginNormal = llVecNorm((cutBeginPos - pos) % <0,0,cutBeginSize.y>/2.0); endNormal = llVecNorm((cutEndPos - pos) % <0,0,-cutEndSize.y/2.0>); rootBeginNormal = llVecNorm((rootCutBeginPos - rootPos) % <0,0,rootCutBeginSize.y>/2.0); rootEndNormal = llVecNorm((rootCutEndPos - rootPos) % <0,0,-rootCutEndSize.y>/2.0);

// Align -X axis faces face = getFace("-x", cut, rot); rootFace = getFace("-x", rootCut, rootRot); if (face != -1 && rootFace != -1) { rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootGlobalSize.y / rootTexScaleW; texScaleW = rootTexScaleW * globalSize.y / rootGlobalSize.y;       widthOff = mod(-posOffset.y, tileSize);

tileSize = rootGlobalSize.z / rootTexScaleH; texScaleH = rootTexScaleH * globalSize.z / rootGlobalSize.z;       heightOff = mod(posOffset.z, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Align +X axis faces face = getFace("+x", cut, rot); rootFace = getFace("+x", rootCut, rootRot); if (face != -1 && rootFace != -1) { rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootGlobalSize.y / rootTexScaleW; texScaleW = rootTexScaleW * globalSize.y / rootGlobalSize.y;       widthOff = mod(posOffset.y, tileSize);

tileSize = rootGlobalSize.z / rootTexScaleH; texScaleH = rootTexScaleH * globalSize.z / rootGlobalSize.z;       heightOff = mod(posOffset.z, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Align -Y axis faces face = getFace("-y", cut, rot); rootFace = getFace("-y", rootCut, rootRot); if (face != -1 && rootFace != -1) { rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootGlobalSize.x / rootTexScaleW; texScaleW = rootTexScaleW * globalSize.x / rootGlobalSize.x;       widthOff = mod(posOffset.x, tileSize);

tileSize = rootGlobalSize.z / rootTexScaleH; texScaleH = rootTexScaleH * globalSize.z / rootGlobalSize.z;       heightOff = mod(posOffset.z, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Align +Y axis faces face = getFace("+y", cut, rot); rootFace = getFace("+y", rootCut, rootRot); if (face != -1 && rootFace != -1) { rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootGlobalSize.x / rootTexScaleW; texScaleW = rootTexScaleW * globalSize.x / rootGlobalSize.x;       widthOff = mod(-posOffset.x, tileSize);

tileSize = rootGlobalSize.z / rootTexScaleH; texScaleH = rootTexScaleH * globalSize.z / rootGlobalSize.z;       heightOff = mod(posOffset.z, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Align -Z axis faces face = getFace("-z", cut, rot); rootFace = getFace("-z", rootCut, rootRot); if (face != -1 && rootFace != -1) { rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootGlobalSize.x / rootTexScaleW; texScaleW = rootTexScaleW * globalSize.x / rootGlobalSize.x;       widthOff = mod(posOffset.x, tileSize);

tileSize = rootGlobalSize.y / rootTexScaleH; texScaleH = rootTexScaleH * globalSize.y / rootGlobalSize.y;       heightOff = mod(-posOffset.y, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Align +Z axis faces face = getFace("+z", cut, rot); rootFace = getFace("+z", rootCut, rootRot); if (face != -1 && rootFace != -1) { rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootGlobalSize.x / rootTexScaleW; texScaleW = rootTexScaleW * globalSize.x / rootGlobalSize.x;       widthOff = mod(posOffset.x, tileSize);

tileSize = rootGlobalSize.y / rootTexScaleH; texScaleH = rootTexScaleH * globalSize.y / rootGlobalSize.y;       heightOff = mod(posOffset.y, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Align cut beginning face = getFace("cutBegin", cut, rot); if (face != -1 && rootFace != -1) {

// Compare to root cut begin face rootFace = getFace("cutBegin", rootCut, rootRot); cutOffset = cutBeginPos - rootCutBeginPos; if (rootFace != -1               && llFabs(beginNormal * rootBeginNormal) > 0.9999) {

// Calculate W and H offset for face cutPlaneOffset.y = cutOffset.z;           cutPlaneOffset.x = llVecMag(cutOffset - <0,0,cutOffset.z>); if (((cutOffset - <0,0,cutOffset.z>) % rootBeginNormal) * <0,0,1> > 0) { cutPlaneOffset.x = cutPlaneOffset.x * -1; }

rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootCutBeginSize.x / rootTexScaleW; texScaleW = rootTexScaleW * cutBeginSize.x / rootCutBeginSize.x;           widthOff = mod(cutPlaneOffset.x, tileSize);

tileSize = rootCutBeginSize.y / rootTexScaleH; texScaleH = rootTexScaleH * cutBeginSize.y / rootCutBeginSize.y;           heightOff = mod(cutPlaneOffset.y, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Compare to root cut end face rootFace = getFace("cutEnd", rootCut, rootRot); cutOffset = cutBeginPos - rootCutEndPos; if (rootFace != -1               && llFabs(beginNormal * rootEndNormal) > 0.9999) {

// Calculate W and H offset for face cutPlaneOffset.y = cutOffset.z;           cutPlaneOffset.x = llVecMag(cutOffset - <0,0,cutOffset.z>); if (((cutOffset - <0,0,cutOffset.z>) % rootEndNormal) * <0,0,1> > 0) { cutPlaneOffset.x = cutPlaneOffset.x * -1; }

rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootCutEndSize.x / rootTexScaleW; texScaleW = rootTexScaleW * cutBeginSize.x / rootCutEndSize.x;           widthOff = mod(cutPlaneOffset.x, tileSize);

tileSize = rootCutEndSize.y / rootTexScaleH; texScaleH = rootTexScaleH * cutBeginSize.y / rootCutEndSize.y;           heightOff = mod(cutPlaneOffset.y, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face);

}   }

// Align cut end face = getFace("cutEnd", cut, rot); if (face != -1) { // Compare to root cut begin face rootFace = getFace("cutBegin", rootCut, rootRot); cutOffset = cutEndPos - rootCutBeginPos; if (rootFace != -1               && llFabs(endNormal * rootBeginNormal) > 0.9999) {

// Calculate W and H offset for face cutPlaneOffset.y = cutOffset.z;           cutPlaneOffset.x = llVecMag(cutOffset - <0,0,cutOffset.z>); if (((cutOffset - <0,0,cutOffset.z>) % rootBeginNormal) * <0,0,1> > 0) { cutPlaneOffset.x = cutPlaneOffset.x * -1; }

rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootCutBeginSize.x / rootTexScaleW; texScaleW = rootTexScaleW * cutEndSize.x / rootCutBeginSize.x;           widthOff = mod(cutPlaneOffset.x, tileSize);

tileSize = rootCutBeginSize.y / rootTexScaleH; texScaleH = rootTexScaleH * cutEndSize.y / rootCutBeginSize.y;           heightOff = mod(cutPlaneOffset.y, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }

// Compare to root cut end face rootFace = getFace("cutEnd", rootCut, rootRot); cutOffset = cutEndPos - rootCutEndPos; if (rootFace != -1               && llFabs(endNormal * rootEndNormal) > 0.9999) {

// Calculate W and H offset for face cutPlaneOffset.y = cutOffset.z;           cutPlaneOffset.x = llVecMag(cutOffset - <0,0,cutOffset.z>); if (((cutOffset - <0,0,cutOffset.z>) % rootEndNormal) * <0,0,1> > 0) { cutPlaneOffset.x = cutPlaneOffset.x * -1; }

rootTexScaleW = llList2Float(rootTexScaleList, rootFace*2); rootTexScaleH = llList2Float(rootTexScaleList, rootFace*2+1);

tileSize = rootCutEndSize.x / rootTexScaleW; texScaleW = rootTexScaleW * cutEndSize.x / rootCutEndSize.x;           widthOff = mod(cutPlaneOffset.x, tileSize);

tileSize = rootCutEndSize.y / rootTexScaleH; texScaleH = rootTexScaleH * cutEndSize.y / rootCutEndSize.y;           heightOff = mod(cutPlaneOffset.y, tileSize);

llOffsetTexture(widthOff, heightOff, face); llScaleTexture(texScaleW, texScaleH, face); }   } }

// Remove the script from this object remove { llSay(0, "Removing OpenAlign script by Phil Tracy"); llRemoveInventory(SCRIPT_NAME); }

//// DEFAULT STATE SCRIPT //// default {

// Initialize state state_entry {       // Set up a listener on LISTEN_CHANNEL llListen(LISTEN_CHANNEL,"",NULL_KEY,""); }

// Called when there is a message on LISTEN_CHANNEL listen(integer channel, string name, key id, string message) {

// Make sure we're on the right channel if (channel != LISTEN_CHANNEL) { return; }

// Split message into the first word and the rest integer space = llSubStringIndex(message, " "); string cmd; string rest; if (space != -1) { cmd = llGetSubString(message, 0, space - 1); rest = llGetSubString(message, space + 1, -1); } else { cmd = message; }

// Read and execute commands for children if (llGetLinkNumber != 1) { if (cmd == "texScale") { space = llSubStringIndex(rest, " "); rootTexScaleList += (float)llGetSubString(rest, 0, space - 1); rootTexScaleList += (float)llGetSubString(rest, space + 1, -1); } else if (cmd == "align") { align; } else if (cmd == "faceCount") { rootFaceCount = (integer)rest; } else if (cmd == "size") { rootSize = (vector)rest; } else if (cmd == "finish") { finish; } else if (cmd == "cut") { rootCut = (vector)rest; }       }

// All objects handle these commands if (cmd == "align") { align; } else if (cmd == "remove") { remove; }   } }

code

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“The Program” refers to any copyrightable work licensed under this License. Each licensee is addressed as “you”. “Licensees” and “recipients” may be individuals or organizations.

To “modify” a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a “modified version” of the earlier work or a work “based on” the earlier work.

A “covered work” means either the unmodified Program or a work based on the Program.

To “propagate” a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.

To “convey” a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.

An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion. 1. Source Code.

The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work.

A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.

The “System Libraries” of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.

The “Corresponding Source” for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.

The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.

The Corresponding Source for a work in source code form is that same work. 2. Basic Permissions.

All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.

You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.

Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary. 3. Protecting Users' Legal Rights From Anti-Circumvention Law.

No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.

When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures. 4. Conveying Verbatim Copies.

You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.

You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee. 5. Conveying Modified Source Versions.

You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:


 * a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
 * b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
 * c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
 * d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.

A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate. 6. Conveying Non-Source Forms.

You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:


 * a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
 * b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
 * c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
 * d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
 * e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.

A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.

A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, “normally used” refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product.

“Installation Information” for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made.

If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).

The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.

Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying. 7. Additional Terms.

“Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.

When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.

Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:


 * a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
 * b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
 * c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
 * d) Limiting the use for publicity purposes of names of licensors or authors of the material; or
 * e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or
 * f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.

All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.

If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.

Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way. 8. Termination.

You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).

However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.

Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.

Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10. 9. Acceptance Not Required for Having Copies.

You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so. 10. Automatic Licensing of Downstream Recipients.

Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.

An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.

You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it. 11. Patents.

A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's “contributor version”.

A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.

Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.

In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.

If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.

If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.

A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.

Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law. 12. No Surrender of Others' Freedom.

If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program. 13. Use with the GNU Affero General Public License.

Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such. 14. Revised Versions of this License.

The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.

Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.

If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.

Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version. 15. Disclaimer of Warranty.

THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 16. Limitation of Liability.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 17. Interpretation of Sections 15 and 16.

If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.