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jsprimmesher.js
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"use strict";
/*
JSPrimMesher Copyright(c) Teravus @ Dahlia https://github.com/Teravus/JSPrimMesher
JavaScript Port of PrimMesher - Teravus (teravus 47 gmail d0t c0m)
The primary developer of the original
C# PrimMesher(http://forge.opensimulator.org/gf/project/primmesher/) is
Dahlia Trimble.
Some portions of PrimMesher are from the following projects:
LibOpenMetaverse (quaternion multiplication routine)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the JSPrimMesher Project nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
var JSPrimMesher = JSPrimMesher || { REVISION: '2' };
JSPrimMesher.Angle = function(p_angle, x, y) {
this.angle = p_angle || 0;
this.X = x || 0;
this.Y = y || 0;
};
JSPrimMesher.Angle.prototype = {
constructor : JSPrimMesher.Angle
};
JSPrimMesher.AngleList = function() {
this.iX = 0;
this.iY = 0;
this.angles3 = new Array();
this.normals3 = new Array();
this.angles4 = new Array();
this.normals4 = new Array();
this.initialized = false;
this.angles24 = new Array();
this.angles = new Array();
this.normals = new Array();
this.angles3[0] = new JSPrimMesher.Angle(0, 1.0, 0);
this.angles3[1] = new JSPrimMesher.Angle(0.33333333333333333, -0.5, 0.86602540378443871);
this.angles3[2] = new JSPrimMesher.Angle(0.66666666666666667, -0.5, -0.86602540378443837);
this.angles3[3] = new JSPrimMesher.Angle(1.0, 1.0, 0.0);
this.normals3[0] = new JSPrimMesher.Coord(0.25, 0.4330127019, 0.0).Normalize();
this.normals3[1] = new JSPrimMesher.Coord(-0.5, 0.0, 0.0).Normalize();
this.normals3[2] = new JSPrimMesher.Coord(0.25, -0.4330127019, 0.0).Normalize();
this.normals3[3] = new JSPrimMesher.Coord(0.25, 0.4330127019, 0.0).Normalize();
this.angles4[0] = new JSPrimMesher.Angle(0.0, 1.0, 0.0);
this.angles4[1] = new JSPrimMesher.Angle(0.25, 0.0, 1.0);
this.angles4[2] = new JSPrimMesher.Angle(0.5, -1.0, 0.0);
this.angles4[3] = new JSPrimMesher.Angle(0.75, 0.0, -1.0);
this.angles4[4] = new JSPrimMesher.Angle(1.0, 1.0, 0.0);
this.normals4[0] = new JSPrimMesher.Coord(0.5, 0.5, 0.0).Normalize();
this.normals4[1] = new JSPrimMesher.Coord( -0.5, 0.5, 0.0).Normalize();
this.normals4[2] = new JSPrimMesher.Coord( -0.5, -0.5, 0.0).Normalize();
this.normals4[3] = new JSPrimMesher.Coord(0.5, -0.5, 0.0).Normalize();
this.normals4[4] = new JSPrimMesher.Coord(0.5, 0.5, 0.0).Normalize();
this.angles24[0] = new JSPrimMesher.Angle(0.0, 1.0, 0.0);
this.angles24[1] = new JSPrimMesher.Angle(0.041666666666666664, 0.96592582628906831, 0.25881904510252074);
this.angles24[2] = new JSPrimMesher.Angle(0.083333333333333329, 0.86602540378443871, 0.5);
this.angles24[3] = new JSPrimMesher.Angle(0.125, 0.70710678118654757, 0.70710678118654746);
this.angles24[4] = new JSPrimMesher.Angle(0.16666666666666667, 0.5, 0.8660254037844386);
this.angles24[5] = new JSPrimMesher.Angle(0.20833333333333331, 0.25881904510252096, 0.9659258262890682);
this.angles24[6] = new JSPrimMesher.Angle(0.25, 0.0, 1.0);
this.angles24[7] = new JSPrimMesher.Angle(0.29166666666666663, -0.25881904510252063, 0.96592582628906831);
this.angles24[8] = new JSPrimMesher.Angle(0.33333333333333333, -0.5, 0.86602540378443871);
this.angles24[9] = new JSPrimMesher.Angle(0.375, -0.70710678118654746, 0.70710678118654757);
this.angles24[10] = new JSPrimMesher.Angle(0.41666666666666663, -0.86602540378443849, 0.5);
this.angles24[11] = new JSPrimMesher.Angle(0.45833333333333331, -0.9659258262890682, 0.25881904510252102);
this.angles24[12] = new JSPrimMesher.Angle(0.5, -1.0, 0.0);
this.angles24[13] = new JSPrimMesher.Angle(0.54166666666666663, -0.96592582628906842, -0.25881904510252035);
this.angles24[14] = new JSPrimMesher.Angle(0.58333333333333326, -0.86602540378443882, -0.5);
this.angles24[15] = new JSPrimMesher.Angle(0.62499999999999989, -0.70710678118654791, -0.70710678118654713);
this.angles24[16] = new JSPrimMesher.Angle(0.66666666666666667, -0.5, -0.86602540378443837);
this.angles24[17] = new JSPrimMesher.Angle(0.70833333333333326, -0.25881904510252152, -0.96592582628906809);
this.angles24[18] = new JSPrimMesher.Angle(0.75, 0.0, -1.0);
this.angles24[19] = new JSPrimMesher.Angle(0.79166666666666663, 0.2588190451025203, -0.96592582628906842);
this.angles24[20] = new JSPrimMesher.Angle(0.83333333333333326, 0.5, -0.86602540378443904);
this.angles24[21] = new JSPrimMesher.Angle(0.875, 0.70710678118654735, -0.70710678118654768);
this.angles24[22] = new JSPrimMesher.Angle(0.91666666666666663, 0.86602540378443837, -0.5);
this.angles24[23] = new JSPrimMesher.Angle(0.95833333333333326, 0.96592582628906809, -0.25881904510252157);
this.angles24[24] = new JSPrimMesher.Angle(1.0, 1.0, 0.0);
this.initialized = true;
};
JSPrimMesher.AngleList.prototype = {
constructor : JSPrimMesher.AngleList,
interpolatePoints : function ( newPoint, p1, p2 ) {
var m = (newPoint - p1.angle) / (p2.angle - p1.angle);
return new JSPrimMesher.Angle(newPoint, p1.X + m * (p2.X - p1.X), p1.Y + m * (p2.Y - p1.Y));
},
intersection : function ( x1, y1, x2, y2, x3, y3, x4, y4 ) {
// ref: http://local.wasp.uwa.edu.au/~pbourke/geometry/lineline2d/
var denom = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1);
var uaNumerator = (x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3);
if (denom != 0.0)
{
var ua = uaNumerator / denom;
this.iX = (x1 + ua * (x2 - x1));
this.iY = (y1 + ua * (y2 - y1));
}
},
makeAngles : function ( sides, startAngle, stopAngle ) {
this.angles = new Array();
this.normals = new Array();
var twoPi = Math.PI * 2.0;
var twoPiInv = 1.0 / twoPi;
if (sides < 1) {
throw "number of sides not greater then zero";
}
if (stopAngle <= startAngle) {
throw "stopAngle not greater then startAngle";
}
if ((sides == 3) || (sides == 4) || (sides = 24)) {
startAngle *= twoPiInv;
stopAngle *= twoPiInv;
var sourceAngles = new Array();
if (sides == 3)
sourceAngles = this.angles3;
else if (sides == 4)
sourceAngles = this.angles4;
else
sourceAngles = this.angles24;
var startAngleIndex = ~~(startAngle * sides);
var endAngleIndex = sourceAngles.length - 1;
if (stopAngle < 1.0)
endAngleIndex = (~~(stopAngle * sides) + 1);
if (endAngleIndex == startAngleIndex)
endAngleIndex++;
for (var angleIndex = startAngleIndex; angleIndex < endAngleIndex + 1; angleIndex++)
{
this.angles.push(sourceAngles[angleIndex]);
if (sides == 3)
this.normals.push(this.normals3[angleIndex]);
else if (sides == 4)
this.normals.push(this.normals4[angleIndex]);
}
if (startAngle > 0.0)
this.angles[0] = this.interpolatePoints(startAngle, this.angles[0], this.angles[1]);
if (stopAngle < 1.0)
{
var lastAngleIndex = this.angles.length - 1;
this.angles[lastAngleIndex] = this.interpolatePoints(stopAngle, this.angles[lastAngleIndex - 1], this.angles[lastAngleIndex]);
}
} else {
var stepSize = twoPi / sides;
var startStep = ~~(startAngle / stepSize);
var angle = stepSize * startStep;
var step = startStep;
var stopAngleTest = stopAngle;
if (stopAngle < twoPi)
{
stopAngleTest = stepSize * (~~(stopAngle / stepSize) + 1);
if (stopAngleTest < stopAngle)
stopAngleTest += stepSize;
if (stopAngleTest > twoPi)
stopAngleTest = twoPi;
}
while (angle <= stopAngleTest)
{
var newAngle = new JSPrimMesher.Angle(angle, Math.cos(angle), Math.sin(angle));
this.angles.push(newAngle);
step += 1;
angle = stepSize * step;
}
if (startAngle > this.angles[0].angle)
{
this.intersection(this.angles[0].X, this.angles[0].Y, this.angles[1].X, this.angles[1].Y, 0.0, 0.0, Math.cos(startAngle), Math.sin(startAngle));
var newAngle1 = new JSPrimMesher.Angle(startAngle, this.iX, this.iY);
this.angles[0] = newAngle1;
}
var index = this.angles.length - 1;
if (stopAngle < this.angles[index].angle)
{
this.intersection(this.angles[index - 1].X, this.angles[index - 1].Y, this.angles[index].X, this.angles[index].Y, 0.0, 0.0, Math.cos(stopAngle), Math.sin(stopAngle));
var newAngle2 = new JSPrimMesher.Angle(stopAngle, this.iX, this.iY);
this.angles[index] = newAngle2;
}
}
}
};
JSPrimMesher.Coord = function(x, y, z) {
this.X = x || 0;
this.Y = y || 0;
this.Z = z || 0;
};
JSPrimMesher.Coord.prototype = {
constructor: JSPrimMesher.Coord,
Length : function() {
return Math.sqrt(this.X * this.X + this.Y * this.Y + this.Z * this.Z);
},
Invert : function() {
this.X = -this.X;
this.Y = -this.Y;
this.Z = -this.Z;
return new JSPrimMesher.Coord(this.X, this.Y, this.Z);
},
Normalize : function() {
var mag = this.Length();
var newx = this.X;
var newy = this.Y;
var newz = this.Z;
if (mag > 0.0000001) {
var oomag = 1.0 / mag;
newx *= oomag;
newy *= oomag;
newz *= oomag;
} else {
newx = 0;
newy = 0;
newz = 0;
}
return new JSPrimMesher.Coord(newx, newy, newz);
},
ToString : function() {
return "" + this.X + " " + this.Y + " " + this.Z + "";
},
Copy : function() {
return new JSPrimMesher.Coord(this.X, this.Y, this.Z);
}
}
JSPrimMesher.Coord.Cross = function ( c1, c2 ) {
return new JSPrimMesher.Coord(
c1.Y * c2.Z - c2.Y * c1.Z,
c1.Z * c2.X - c2.Z * c1.X,
c1.X * c2.Y - c2.X * c1.Y
);
};
JSPrimMesher.Coord.Add = function ( v, a ) {
return new JSPrimMesher.Coord(v.X + a.X, v.Y + a.Y, v.Z + a.Z);
};
JSPrimMesher.Coord.Mul = function ( v, m ) {
return new JSPrimMesher.Coord(v.X * m.X, v.Y * m.Y, v.Z * m.Z);
};
JSPrimMesher.Coord.Dot = function ( v1, v2 ) {
return v1.X * v2.X + v1.Y * v2.Y + v1.Z * v2.Z;
};
JSPrimMesher.Coord.MulQuat = function ( v, q ) {
var c2 = new JSPrimMesher.Coord(0.0, 0.0, 0.0);
c2.X = q.W * q.W * v.X +
2.0 * q.Y * q.W * v.Z -
2.0 * q.Z * q.W * v.Y +
q.X * q.X * v.X +
2.0 * q.Y * q.X * v.Y +
2.0 * q.Z * q.X * v.Z -
q.Z * q.Z * v.X -
q.Y * q.Y * v.X;
c2.Y =
2.0 * q.X * q.Y * v.X +
q.Y * q.Y * v.Y +
2.0 * q.Z * q.Y * v.Z +
2.0 * q.W * q.Z * v.X -
q.Z * q.Z * v.Y +
q.W * q.W * v.Y -
2.0 * q.X * q.W * v.Z -
q.X * q.X * v.Y;
c2.Z =
2.0 * q.X * q.Z * v.X +
2.0 * q.Y * q.Z * v.Y +
q.Z * q.Z * v.Z -
2.0 * q.W * q.Y * v.X -
q.Y * q.Y * v.Z +
2.0 * q.W * q.X * v.Y -
q.X * q.X * v.Z +
q.W * q.W * v.Z;
return c2;
};
JSPrimMesher.Face = function(v1, v2, v3, n1, n2, n3, uv1, uv2, uv3 ) {
this.primFace = 0;
this.v1 = v1 || 0;
this.v2 = v2 || 0;
this.v3 = v3 || 0;
this.n1 = n1 || 0;
this.n2 = n2 || 0;
this.n3 = n3 || 0;
this.uv1 = uv1 || 0;
this.uv2 = uv2 || 0;
this.uv3 = uv3 || 0;
};
JSPrimMesher.Face.prototype = {
constructor : JSPrimMesher.Face,
SurfaceNormal : function( coordlist ) {
var c1 = coordlist[this.v1];
var c2 = coordlist[this.v2];
var c3 = coordlist[this.v3];
var edge1 = new JSPrimMesher.Coord(c2.X - c1.X, c2.Y - c1.Y, c2.Z - c1.Z);
var edge2 = new JSPrimMesher.Coord(c3.X - c1.X, c3.Y - c1.Y, c3.Z - c1.Z);
return JSPrimMesher.Coord.Cross( edge1, edge2 ).Normalize();
},
Copy : function () {
return new JSPrimMesher.Face(this.v1,this.v2,this.v3,this.n1,this.n2,this.n3,this.uv1,this.uv2,this.uv3);
}
};
JSPrimMesher.Path = function() {
this.pathNodes= new Array();
this.twistBegin = 0.0;
this.twistEnd = 0.0;
this.topShearX = 0.0;
this.topShearY = 0.0;
this.pathCutBegin = 0.0;
this.pathCutEnd = 1.0;
this.dimpleBegin = 0.0;
this.dimpleEnd = 1.0;
this.skew = 0.0;
this.holeSizeX = 1.0; // called pathScaleX in pbs
this.holeSizeY = 0.25;
this.taperX = 0.0;
this.taperY = 0.0;
this.radius = 0.0;
this.revolutions = 1.0;
this.stepsPerRevolution = 24;
this.twoPi = 2.0 * Math.PI;
};
JSPrimMesher.Path.prototype = {
constructor : JSPrimMesher.Path,
Create : function ( pathType, steps ) {
if (pathType == JSPrimMesher.PathType.Linear || pathType == JSPrimMesher.PathType.Flexible ) {
var step = 0;
var length = this.pathCutEnd - this.pathCutBegin;
var twistTotal = this.twistEnd - this.twistBegin;
var twistTotalAbs = Math.abs(twistTotal);
if (twistTotalAbs > 0.01)
steps += ~~(twistTotalAbs * 3.66); // dahlia's magic number
var start = -0.5;
var stepSize = length / steps;
var percentOfPathMultiplier = stepSize * 0.999999;
var xOffset = this.topShearX * this.pathCutBegin;
var yOffset = this.topShearY * this.pathCutBegin;
var zOffset = start;
var xOffsetStepIncrement = this.topShearX * length / steps;
var yOffsetStepIncrement = this.topShearY * length / steps;
var percentOfPath = this.pathCutBegin;
zOffset += percentOfPath;
// sanity checks
var done = false;
while (!done) {
var newNode = new JSPrimMesher.PathNode();
newNode.xScale = 1.0;
if (this.taperX == 0.0)
newNode.xScale = 1.0;
else if (this.taperX > 0.0)
newNode.xScale = 1.0 - percentOfPath * this.taperX;
else
newNode.xScale = 1.0 + (1.0 - percentOfPath) * this.taperX;
newNode.yScale = 1.0;
if (this.taperY == 0.0)
newNode.yScale = 1.0;
else if (this.taperY > 0.0)
newNode.yScale = 1.0 - percentOfPath * this.taperY;
else
newNode.yScale = 1.0 + (1.0 - percentOfPath) * this.taperY;
var twist = this.twistBegin + twistTotal * percentOfPath;
newNode.rotation = JSPrimMesher.Quat.QuatAxisAngle(new JSPrimMesher.Coord(0, 0, 1), twist);
newNode.position = new JSPrimMesher.Coord(xOffset, yOffset, zOffset);
newNode.percentOfPath = percentOfPath;
this.pathNodes.push(newNode);
if (step < steps)
{
step += 1;
percentOfPath += percentOfPathMultiplier;
xOffset += xOffsetStepIncrement;
yOffset += yOffsetStepIncrement;
zOffset += stepSize;
if (percentOfPath > this.pathCutEnd)
done = true;
}
else
done = true;
} // end of linear path code
} else { // pathType == Circular
var twistTotal = this.twistEnd - this.twistBegin;
// if the profile has a lot of twist, add more layers otherwise the layers may overlap
// and the resulting mesh may be quite inaccurate. This method is arbitrary and doesn't
// accurately match the viewer
var twistTotalAbs = Math.abs(twistTotal);
if (twistTotalAbs > 0.01)
{
if (twistTotalAbs > Math.PI * 1.5)
steps *= 2;
if (twistTotalAbs > Math.PI * 3.0)
steps *= 2;
}
var yPathScale = this.holeSizeY * 0.5;
var pathLength = this.pathCutEnd - this.pathCutBegin;
var totalSkew = this.skew * 2.0 * pathLength;
var skewStart = this.pathCutBegin * 2.0 * this.skew - this.skew;
var xOffsetTopShearXFaxtor = this.topShearX * (0.25 + 0.5 * (0.5 - this.holeSizeY));
var yShearCompensation = 1.0 + Math.abs(this.topShearY) * 0.25;
// It's not quite clear what pushY (Y top shear) does, but subtracting it from the start and end
// angles appears to approximate it's effects on path cut. Likewise, adding it to the angle used
// to calculate the sine for generating the path radius appears to approximate it's effects there
// too, but there are some subtle differences in the radius which are noticeable as the prim size
// increases and it may affect megaprims quite a bit. The effect of the Y top shear parameter on
// the meshes generated with this technique appear nearly identical in shape to the same prims when
// displayed by the viewer.
var startAngle = (this.twoPi * this.pathCutBegin * this.revolutions) - this.topShearY * 0.9;
var endAngle = (this.twoPi * this.pathCutEnd * this.revolutions) - this.topShearY * 0.9;
var stepSize = this.twoPi / this.stepsPerRevolution;
var step = ~~(startAngle / stepSize);
var angle = startAngle;
var done = false;
while (!done) // loop through the length of the path and add the layers
{
var newNode = new JSPrimMesher.PathNode();
var xProfileScale = (1.0 - Math.abs(this.skew)) * this.holeSizeX;
var yProfileScale = this.holeSizeY;
var percentOfPath = angle / (this.twoPi * this.revolutions);
var percentOfAngles = (angle - startAngle) / (endAngle - startAngle);
if (this.taperX > 0.01)
xProfileScale *= 1.0 - percentOfPath * this.taperX;
else if (this.taperX < -0.01)
xProfileScale *= 1.0 + (1.0 - percentOfPath) * this.taperX;
if (this.taperY > 0.01)
yProfileScale *= 1.0 - percentOfPath * this.taperY;
else if (this.taperY < -0.01)
yProfileScale *= 1.0 + (1.0 - percentOfPath) * this.taperY;
newNode.xScale = xProfileScale;
newNode.yScale = yProfileScale;
var radiusScale = 1.0;
if (this.radius > 0.001)
radiusScale = 1.0 - this.radius * percentOfPath;
else if (this.radius < 0.001)
radiusScale = 1.0 + this.radius * (1.0 - percentOfPath);
var twist = this.twistBegin + twistTotal * percentOfPath;
var xOffset = 0.5 * (skewStart + totalSkew * percentOfAngles);
xOffset += Math.sin(angle) * xOffsetTopShearXFaxtor;
var yOffset = yShearCompensation * Math.cos(angle) * (0.5 - yPathScale) * radiusScale;
var zOffset = Math.sin(angle + this.topShearY) * (0.5 - yPathScale) * radiusScale;
newNode.position = new JSPrimMesher.Coord(xOffset, yOffset, zOffset);
// now orient the rotation of the profile layer relative to it's position on the path
// adding taperY to the angle used to generate the quat appears to approximate the viewer
newNode.rotation = JSPrimMesher.Quat.QuatAxisAngle(new JSPrimMesher.Coord(1.0, 0.0, 0.0), angle + this.topShearY);
// next apply twist rotation to the profile layer
if (twistTotal != 0.0 || this.twistBegin != 0.0)
newNode.rotation = JSPrimMesher.Quat.Mul(newNode.rotation,JSPrimMesher.Quat.QuatAxisAngle(new JSPrimMesher.Coord(0.0, 0.0, 1.0), twist));
newNode.percentOfPath = percentOfPath;
this.pathNodes.push(newNode);
// calculate terms for next iteration
// calculate the angle for the next iteration of the loop
if (angle >= endAngle - 0.01)
done = true;
else
{
step += 1;
angle = stepSize * step;
if (angle > endAngle)
angle = endAngle;
}
}
}
}
};
JSPrimMesher.PathNode = function() {
this.position = new JSPrimMesher.Coord();
this.rotation = new JSPrimMesher.Quat(0,0,0,1);
this.xScale = 0;
this.yScale = 0;
this.percentOfPath = 0;
};
JSPrimMesher.PathNode.prototype = {
constructor : JSPrimMesher.PathNode
};
JSPrimMesher.PathType = { Linear : 0, Circular : 1, Flexible : 2 };
JSPrimMesher.PrimMesh = function ( psides, pprofileStart, pprofileEnd, phollow, phollowSides ) {
this.errorMessage = "";
this.twoPi = 2.0 * Math.PI;
this.coords = new Array();
this.normals = new Array();
this.faces = new Array();
this.viewerFaces = new Array();
this.sides = 4;
this.hollowSides = 4;
this.profileStart = 0.0;
this.profileEnd = 1.0;
this.hollow = 0.0;
this.twistBegin = 0;
this.twistEnd = 0;
this.topShearX = 0.0;
this.topShearY = 0.0;
this.pathCutBegin = 0.0;
this.pathCutEnd = 1.0;
this.dimpleBegin = 0.0;
this.dimpleEnd = 1.0;
this.skew = 0.0;
this.holeSizeX = 1.0;
this.holeSizeY = 0.25;
this.taperX = 0.0;
this.taperY = 0.0;
this.radius = 0.0;
this.revolutions = 1.0;
this.stepsPerRevolution = 24;
this.profileOuterFaceNumber = -1;
this.profileHollowFaceNumber = -1;
this.hasProfileCut = false;
this.hasHollow = false;
this.calcVertexNormals = false;
this.normalsProcessed = false;
this.viewerMode = false;
this.sphereMode = false;
this.numPrimFaces = 0;
this.coords = new Array();
this.faces = new Array();
this.sides = psides || 4;
this.profileStart = pprofileStart || 0.0;
this.profileEnd = pprofileEnd || 1.0;
this.hollow = phollow || 0.0;
this.hollowSides = phollowSides || 4;
if (psides < 3)
this.sides = 3;
if (phollowSides < 3)
this.hollowSides = 3;
if (pprofileStart < 0.0)
this.profileStart = 0.0;
if (pprofileEnd > 1.0)
this.profileEnd = 1.0;
if (pprofileEnd < 0.02)
this.profileEnd = 0.02;
if (pprofileStart >= pprofileEnd)
this.profileStart = this.profileEnd - 0.02;
if (phollow > 0.99)
this.hollow = 0.99;
if (phollow < 0.0)
this.hollow = 0.0;
this.hasProfileCut = (this.profileStart > 0.0 || this.profileEnd < 1.0);
this.hasHollow = (this.hollow > 0.001);
};
JSPrimMesher.PrimMesh.prototype = {
constructor: JSPrimMesher.PrimMesh,
ParamsToDisplayString: function () {
var s = "";
s += "sides..................: " + this.sides;
s += "\nhollowSides..........: " + this.hollowSides;
s += "\nprofileStart.........: " + this.profileStart;
s += "\nprofileEnd...........: " + this.profileEnd;
s += "\nhollow...............: " + this.hollow;
s += "\ntwistBegin...........: " + this.twistBegin;
s += "\ntwistEnd.............: " + this.twistEnd;
s += "\ntopShearX............: " + this.topShearX;
s += "\ntopShearY............: " + this.topShearY;
s += "\npathCutBegin.........: " + this.pathCutBegin;
s += "\npathCutEnd...........: " + this.pathCutEnd;
s += "\ndimpleBegin..........: " + this.dimpleBegin;
s += "\ndimpleEnd............: " + this.dimpleEnd;
s += "\nskew.................: " + this.skew;
s += "\nholeSizeX............: " + this.holeSizeX;
s += "\nholeSizeY............: " + this.holeSizeY;
s += "\ntaperX...............: " + this.taperX;
s += "\ntaperY...............: " + this.taperY;
s += "\nradius...............: " + this.radius;
s += "\nrevolutions..........: " + this.revolutions;
s += "\nstepsPerRevolution...: " + this.stepsPerRevolution;
s += "\nsphereMode...........: " + this.sphereMode;
s += "\nhasProfileCut........: " + this.hasProfileCut;
s += "\nhasHollow............: " + this.hasHollow;
s += "\nviewerMode...........: " + this.viewerMode;
return s;
},
SurfaceNormalCoord : function ( c1, c2, c3 ) {
var edge1 = new JSPrimMesher.Coord(c2.X - c1.X, c2.Y - c1.Y, c2.Z - c1.Z);
var edge2 = new JSPrimMesher.Coord(c3.X - c1.X, c3.Y - c1.Y, c3.Z - c1.Z);
var normal = JSPrimMesher.Coord.Cross(edge1, edge2);
normal = normal.Normalize();
return normal;
},
SurfaceNormalFace : function ( face ) {
return SurfaceNormalCoord(this.coords[face.v1], this.coords[face.v2], this.coords[face.v3]);
},
SurfaceNormal : function ( faceIndex ) {
var numFaces = this.faces.length;
if (faceIndex < 0 || faceIndex >= numFaces)
throw "faceIndex out of range";
return SurfaceNormalFace(this.faces[faceIndex]);
},
Copy : function () {
var copy = new JSPrimMesher.PrimMesh(this.sides, this.profileStart, this.profileEnd, this.hollow, this.hollowSides);
copy.twistBegin = this.twistBegin;
copy.twistEnd = this.twistEnd;
copy.topShearX = this.topShearX;
copy.topShearY = this.topShearY;
copy.pathCutBegin = this.pathCutBegin;
copy.pathCutEnd = this.pathCutEnd;
copy.dimpleBegin = this.dimpleBegin;
copy.dimpleEnd = this.dimpleEnd;
copy.skew = this.skew;
copy.holeSizeX = this.holeSizeX;
copy.holeSizeY = this.holeSizeY;
copy.taperX = this.taperX;
copy.taperY = this.taperY;
copy.radius = this.radius;
copy.revolutions = this.revolutions;
copy.stepsPerRevolution = this.stepsPerRevolution;
copy.calcVertexNormals = this.calcVertexNormals;
copy.normalsProcessed = this.normalsProcessed;
copy.viewerMode = this.viewerMode;
copy.numPrimFaces = this.numPrimFaces;
copy.errorMessage = this.errorMessage;
copy.coords = this.coords.concat();
copy.faces = this.faces.concat();
copy.viewerFaces = this.viewerFaces.concat();
copy.normals = this.normals.concat();
return copy;
},
CalcNormals : function () {
if (normalsProcessed)
return;
normalsProcessed = true;
var numFaces = faces.length;
if (!this.calcVertexNormals)
this.normals = new Array();
for (var i = 0; i < numFaces; i++)
{
var face = faces[i];
this.normals.push(this.SurfaceNormal(i).Normalize());
var normIndex = normals.length - 1;
face.n1 = normIndex;
face.n2 = normIndex;
face.n3 = normIndex;
this.faces[i] = face;
}
},
AddPos : function ( x, y, z ) {
var i = 0;
var numVerts = this.coords.length;
var vert = new JSPrimMesher.Coord(0,0);
for (i = 0; i < numVerts; i++)
{
vert = this.coords[i];
vert.X += x;
vert.Y += y;
vert.Z += z;
this.coords[i] = vert;
}
if (this.viewerFaces)
{
var numViewerFaces = this.viewerFaces.length;
for (i = 0; i < numViewerFaces; i++)
{
var v = this.viewerFaces[i];
v.AddPos(x, y, z);
this.viewerFaces[i] = v;
}
}
},
AddRot : function ( q ) {
var i = 0;
var numVerts = this.coords.length;
for (i = 0; i < numVerts; i++)
this.coords[i] = JSPrimMesher.Coord.MulQuat(this.coords[i], q);
if (this.normals)
{
var numNormals = this.normals.length;
for (i = 0; i < numNormals; i++)
this.normals[i] = JSPrimMesher.Coord.MulQuat(this.normals[i], q);
}
if (this.viewerFaces != null)
{
var numViewerFaces = this.viewerFaces.length;
for (i = 0; i < numViewerFaces; i++)
{
var v = this.viewerFaces[i];
v.v1 = Coord.MulQuat(v.v1, q);
v.v2 = Coord.MulQuat(v.v2, q);
v.v3 = Coord.MulQuat(v.v3, q);
v.n1 = Coord.MulQuat(v.n1, q);
v.n2 = Coord.MulQuat(v.n2, q);
v.n3 = Coord.MulQuat(v.n3, q);
this.viewerFaces[i] = v;
}
}
},
Scale : function ( x, y, z ) {
var i = 0;
var numVerts = this.coords.length;
var m = new JSPrimMesher.Coord(x, y, z);
for (i = 0; i < numVerts; i++)
this.coords[i] = JSPrimMesher.Coord.Mul(this.coords[i], m);
if (this.viewerFaces != null)
{
var numViewerFaces = this.viewerFaces.length;
for (i = 0; i < numViewerFaces; i++)
{
var v = this.viewerFaces[i];
v.v1 = JSPrimMesher.Coord.Mul(v.v1, m);
v.v2 = JSPrimMesher.Coord.Mul(v.v2, m);
v.v3 = JSPrimMesher.Coord.Mul(v.v3, m);
this.viewerFaces[i] = v;
}
}
},
ProfileOuterFaceNumber : function() {
return this.profileOuterFaceNumber;
},
ProfileHollowFaceNumber : function() {
return this.profileHollowFaceNumber;
},
HasProfileCut : function() {
return this.hasProfileCut;
},
HasHollow : function() {
return this.hasHollow;
},
Extrude : function ( pathType ) {
var needEndFaces = false;
this.coords = new Array();
this.faces = new Array();
if (this.viewerMode) {
this.viewerFaces = new Array();
this.calcVertexNormals = true;
}
if (this.calcVertexNormals)
this.normals = new Array();
var steps = 1;
var length = this.pathCutEnd - this.pathCutBegin;
this.normalsProcessed = false;
if (this.viewerMode && this.sides == 3) {
// prisms don't taper well so add some vertical resolution
// other prims may benefit from this but just do prisms for now
if (Math.abs(this.taperX) > 0.01 || Math.abs(this.taperY) > 0.01)
steps = ~~(steps * 4.5 * length);
}
if (this.sphereMode)
this.hasProfileCut = this.profileEnd - this.profileStart < 0.4999;
else
this.hasProfileCut = this.profileEnd - this.profileStart < 0.9999;
this.hasHollow = (this.hollow > 0.001);
var twistBegin = this.twistBegin / 360.0 * this.twoPi;
var twistEnd = this.twistEnd / 360.0 * this.twoPi;
var twistTotal = twistEnd - twistBegin;
var twistTotalAbs = Math.abs(twistTotal);
if (twistTotalAbs > 0.01)
steps += ~~(twistTotalAbs * 3.66);
var hollow = this.hollow;
if (pathType == JSPrimMesher.PathType.Circular)
{
needEndFaces = false;
if (this.pathCutBegin != 0.0 || this.pathCutEnd != 1.0)
needEndFaces = true;
else if (this.taperX != 0.0 || this.taperY != 0.0)
needEndFaces = true;
else if (this.skew != 0.0)
needEndFaces = true;
else if (twistTotal != 0.0)
needEndFaces = true;
else if (this.radius != 0.0)
needEndFaces = true;
}
else needEndFaces = true;
// sanity checks
var initialProfileRot = 0.0;
if (pathType == JSPrimMesher.PathType.Circular)
{
if (this.sides == 3)
{
initialProfileRot = Math.PI;
if (this.hollowSides == 4)
{
if (hollow > 0.7)
hollow = 0.7;
hollow *= 0.707;
}
else
hollow *= 0.5;
}
else if (this.sides == 4)
{
initialProfileRot = 0.25 * Math.PI;
if (this.hollowSides != 4)
hollow *= 0.707;
}
else if (this.sides > 4)
{
initialProfileRot = Math.PI;
if (this.hollowSides == 4)
{
if (hollow > 0.7)
hollow = 0.7;
hollow /= 0.7;
}
}
}
else
{
if (this.sides == 3)
{
if (this.hollowSides == 4)
{
if (hollow > 0.7)
hollow = 0.7;
hollow *= 0.707;
}
else
hollow *= 0.5;
}
else if (this.sides == 4)
{
initialProfileRot = 1.25 * Math.PI;
if (this.hollowSides != 4)
hollow *= 0.707;
}
else if (this.sides == 24 && this.hollowSides == 4)
hollow *= 1.414;
}
var profile = new JSPrimMesher.Profile(this.sides, this.profileStart, this.profileEnd, hollow, this.hollowSides, true, this.calcVertexNormals);
this.errorMessage = profile.errorMessage;
this.numPrimFaces = profile.numPrimFaces;
var cut1FaceNumber = profile.bottomFaceNumber + 1;
var cut2FaceNumber = cut1FaceNumber + 1;
if (!needEndFaces)
{
cut1FaceNumber -= 2;
cut2FaceNumber -= 2;
}
this.profileOuterFaceNumber = profile.outerFaceNumber;
if (!needEndFaces)
this.profileOuterFaceNumber--;
if (this.hasHollow)
{
this.profileHollowFaceNumber = profile.hollowFaceNumber;
if (!needEndFaces)
this.profileHollowFaceNumber--;
}
var cut1Vert = -1;
var cut2Vert = -1;
if (this.hasProfileCut) {
if (this.hasHollow) {
cut1Vert = profile.coords.length - 1;
cut2Vert = profile.numOuterVerts - 1;
} else {
cut1Vert = 0;
cut2Vert = profile.numOuterVerts;
}
}
if (initialProfileRot != 0.0) {
profile.AddRot(JSPrimMesher.Quat.QuatAxisAngle(new JSPrimMesher.Coord(0.0, 0.0, 1.0), initialProfileRot));
if (this.viewerMode)
profile.MakeFaceUVs();
}
var lastCutNormal1 = new JSPrimMesher.Coord();
var lastCutNormal2 = new JSPrimMesher.Coord();
var lastV = 0.0;
var thisV = 0.0;
var path = new JSPrimMesher.Path();
path.twistBegin = twistBegin;
path.twistEnd = twistEnd;
path.topShearX = this.topShearX;
path.topShearY = this.topShearY;
path.pathCutBegin = this.pathCutBegin;
path.pathCutEnd = this.pathCutEnd;
path.dimpleBegin = this.dimpleBegin;
path.dimpleEnd = this.dimpleEnd;
path.skew = this.skew;
path.holeSizeX = this.holeSizeX;
path.holeSizeY = this.holeSizeY;
path.taperX = this.taperX;
path.taperY = this.taperY;
path.radius = this.radius;
path.revolutions = this.revolutions;
path.stepsPerRevolution = this.stepsPerRevolution;
path.Create(pathType, steps);
//var pathNodeCount:uint = path.pathNodes.length;
for (var nodeIndex = 0; nodeIndex < path.pathNodes.length; nodeIndex++) {
var node = path.pathNodes[nodeIndex];
//var newLayer = JSON.parse(JSON.stringify(profile));
var newLayer = profile.Copy(true);
//var newLayer = new JSPrimMesher.Profile(this.sides, this.profileStart, this.profileEnd, hollow, this.hollowSides, true, this.calcVertexNormals);
//if (initialProfileRot != 0.0) {
// newLayer.AddRot(JSPrimMesher.Quat.QuatAxisAngle(new JSPrimMesher.Coord(0.0, 0.0, 1.0), initialProfileRot));
// if (this.viewerMode)
// newLayer.MakeFaceUVs();
//}