/// <summary>
/// </summary>
/// <param name="other">
/// </param>
public virtual void merge(VertexData other)
{
if (other.indices != null)
{
if (this.indices == null)
{
this.indices = new Array <int>();
}
var offset = (this.positions != null) ? this.positions.Length / 3 : 0;
for (var index = 0; index < other.indices.Length; index++)
{
this.indices.Add(other.indices[index] + offset);
}
}
if (other.positions != null)
{
if (this.positions == null)
{
this.positions = new Array <double>();
}
for (var index = 0; index < other.positions.Length; index++)
{
this.positions.Add(other.positions[index]);
}
}
if (other.normals != null)
{
if (this.normals == null)
{
this.normals = new Array <double>();
}
for (var index = 0; index < other.normals.Length; index++)
{
this.normals.Add(other.normals[index]);
}
}
if (other.uvs != null)
{
if (this.uvs == null)
{
this.uvs = new Array <double>();
}
for (var index = 0; index < other.uvs.Length; index++)
{
this.uvs.Add(other.uvs[index]);
}
}
if (other.uv2s != null)
{
if (this.uv2s == null)
{
this.uv2s = new Array <double>();
}
for (var index = 0; index < other.uv2s.Length; index++)
{
this.uv2s.Add(other.uv2s[index]);
}
}
if (other.matricesIndices != null)
{
if (this.matricesIndices == null)
{
this.matricesIndices = new Array <double>();
}
for (var index = 0; index < other.matricesIndices.Length; index++)
{
this.matricesIndices.Add(other.matricesIndices[index]);
}
}
if (other.matricesWeights != null)
{
if (this.matricesWeights == null)
{
this.matricesWeights = new Array <double>();
}
for (var index = 0; index < other.matricesWeights.Length; index++)
{
this.matricesWeights.Add(other.matricesWeights[index]);
}
}
if (other.colors != null)
{
if (this.colors == null)
{
this.colors = new Array <double>();
}
for (var index = 0; index < other.colors.Length; index++)
{
this.colors.Add(other.colors[index]);
}
}
}
/// <summary>
/// </summary>
/// <param name="xmin">
/// </param>
/// <param name="zmin">
/// </param>
/// <param name="xmax">
/// </param>
/// <param name="zmax">
/// </param>
/// <param name="subdivisions">
/// </param>
/// <param name="precision">
/// </param>
/// <returns>
/// </returns>
public static VertexData CreateTiledGround(double xmin, double zmin, double xmax, double zmax, SizeI subdivisions, SizeI precision)
{
var indices = new Array <int>();
var positions = new Array <double>();
var normals = new Array <double>();
var uvs = new Array <double>();
subdivisions.h = (subdivisions.w < 1) ? 1 : subdivisions.h;
subdivisions.w = (subdivisions.w < 1) ? 1 : subdivisions.w;
precision.w = (precision.w < 1) ? 1 : precision.w;
precision.h = (precision.h < 1) ? 1 : precision.h;
var tileSize = new SizeI {
w = (int)((xmax - xmin) / subdivisions.w), h = (int)((zmax - zmin) / subdivisions.h)
};
for (var tileRow = 0; tileRow < subdivisions.h; tileRow++)
{
for (var tileCol = 0; tileCol < subdivisions.w; tileCol++)
{
var xTileMin = xmin + tileCol * tileSize.w;
var zTileMin = zmin + tileRow * tileSize.h;
var xTileMax = xmin + (tileCol + 1) * tileSize.w;
var zTileMax = zmin + (tileRow + 1) * tileSize.h;
// Indices
var _base = positions.Length / 3;
var rowLength = precision.w + 1;
for (var row = 0; row < precision.h; row++)
{
for (var col = 0; col < precision.w; col++)
{
var square = new Array <int>(
_base + col + row * rowLength,
_base + (col + 1) + row * rowLength,
_base + (col + 1) + (row + 1) * rowLength,
_base + col + (row + 1) * rowLength);
indices.Add(square[1]);
indices.Add(square[2]);
indices.Add(square[3]);
indices.Add(square[0]);
indices.Add(square[1]);
indices.Add(square[3]);
}
}
// Position, normals and uvs
var position = Vector3.Zero();
var normal = new Vector3(0, 1.0, 0);
for (var row = 0; row <= precision.h; row++)
{
position.z = (row * (zTileMax - zTileMin)) / precision.h + zTileMin;
for (var col = 0; col <= precision.w; col++)
{
position.x = (col * (xTileMax - xTileMin)) / precision.w + xTileMin;
position.y = 0;
positions.Add(position.x, position.y, position.z);
normals.Add(normal.x, normal.y, normal.z);
uvs.Add(col / precision.w, row / precision.h);
}
}
}
}
var vertexData = new VertexData();
vertexData.indices = indices;
vertexData.positions = positions;
vertexData.normals = normals;
vertexData.uvs = uvs;
return(vertexData);
}
/// <summary>
/// </summary>
/// <param name="radius">
/// </param>
/// <param name="tube">
/// </param>
/// <param name="radialSegments">
/// </param>
/// <param name="tubularSegments">
/// </param>
/// <param name="p">
/// </param>
/// <param name="q">
/// </param>
/// <returns>
/// </returns>
public static VertexData CreateTorusKnot(
double radius = 2, double tube = 0.5, int radialSegments = 32, int tubularSegments = 32, double p = 2, double q = 3)
{
var indices = new Array <int>();
var positions = new Array <double>();
var normals = new Array <double>();
var uvs = new Array <double>();
var getPos = new Func <double, Vector3>(
angle =>
{
var cu = Math.Cos(angle);
var su = Math.Sin(angle);
var quOverP = q / p * angle;
var cs = Math.Cos(quOverP);
var tx = radius * (2 + cs) * 0.5 * cu;
var ty = radius * (2 + cs) * su * 0.5;
var tz = radius * Math.Sin(quOverP) * 0.5;
return(new Vector3(tx, ty, tz));
});
for (var i = 0; i <= radialSegments; i++)
{
var modI = i % radialSegments;
var u = modI / radialSegments * 2 * p * Math.PI;
var p1 = getPos(u);
var p2 = getPos(u + 0.01);
var tang = p2.subtract(p1);
var n = p2.add(p1);
var bitan = Vector3.Cross(tang, n);
n = Vector3.Cross(bitan, tang);
bitan.normalize();
n.normalize();
for (var j = 0; j < tubularSegments; j++)
{
var modJ = j % tubularSegments;
var v = modJ / tubularSegments * 2 * Math.PI;
var cx = -tube *Math.Cos(v);
var cy = tube * Math.Sin(v);
positions.Add(p1.x + cx * n.x + cy * bitan.x);
positions.Add(p1.y + cx * n.y + cy * bitan.y);
positions.Add(p1.z + cx * n.z + cy * bitan.z);
uvs.Add(i / radialSegments);
uvs.Add(j / tubularSegments);
}
}
for (var i = 0; i < radialSegments; i++)
{
for (var j = 0; j < tubularSegments; j++)
{
var jNext = (j + 1) % tubularSegments;
var a = i * tubularSegments + j;
var b = (i + 1) * tubularSegments + j;
var c = (i + 1) * tubularSegments + jNext;
var d = i * tubularSegments + jNext;
indices.Add(d);
indices.Add(b);
indices.Add(a);
indices.Add(d);
indices.Add(c);
indices.Add(b);
}
}
ComputeNormals(positions, indices, normals);
var vertexData = new VertexData();
vertexData.indices = indices;
vertexData.positions = positions;
vertexData.normals = normals;
vertexData.uvs = uvs;
return(vertexData);
}
public override VertexData _regenerateVertexData()
{
return(VertexData.CreateTorusKnot(this.radius, this.tube, this.radialSegments, this.tubularSegments, this.p, this.q));
}
/// <summary>
/// </summary>
/// <param name="height">
/// </param>
/// <param name="diameterTop">
/// </param>
/// <param name="diameterBottom">
/// </param>
/// <param name="tessellation">
/// </param>
/// <param name="subdivisions">
/// </param>
/// <returns>
/// </returns>
public static VertexData CreateCylinder(
double height = 1.0, double diameterTop = 0.5, double diameterBottom = 1.0, int tessellation = 16, int subdivisions = 1)
{
var radiusTop = diameterTop / 2;
var radiusBottom = diameterBottom / 2;
var indices = new Array <int>();
var positions = new Array <double>();
var normals = new Array <double>();
var uvs = new Array <double>();
subdivisions = (subdivisions < 1) ? 1 : subdivisions;
var getCircleVector = new Func <int, Vector3>(
(i) =>
{
var angle = i * 2.0 * Math.PI / tessellation;
var dx = Math.Cos(angle);
var dz = Math.Sin(angle);
return(new Vector3(dx, 0, dz));
});
Vector3 offset;
var createCylinderCap = new Action <bool>(
(isTop) =>
{
var radius = isTop ? radiusTop : radiusBottom;
if (radius == 0.0)
{
return;
}
var vbase = positions.Length / 3;
offset = new Vector3(0, height / 2, 0);
var textureScale = new Vector2(0.5, 0.5);
if (!isTop)
{
offset.scaleInPlace(-1.0);
textureScale.x = -textureScale.x;
}
for (var i = 0; i < tessellation; i++)
{
var circleVector = getCircleVector(i);
var position = circleVector.scale(radius).add(offset);
var textureCoordinate = new Vector2(circleVector.x * textureScale.x + 0.5, circleVector.z * textureScale.y + 0.5);
positions.Add(position.x, position.y, position.z);
uvs.Add(textureCoordinate.x, textureCoordinate.y);
}
for (var i = 0; i < tessellation - 2; i++)
{
if (!isTop)
{
indices.Add(vbase);
indices.Add(vbase + (i + 2) % tessellation);
indices.Add(vbase + (i + 1) % tessellation);
}
else
{
indices.Add(vbase);
indices.Add(vbase + (i + 1) % tessellation);
indices.Add(vbase + (i + 2) % tessellation);
}
}
});
var _base = new Vector3(0, -1, 0).scale(height / 2);
offset = new Vector3(0, 1, 0).scale(height / subdivisions);
var stride = tessellation + 1;
for (var i = 0; i <= tessellation; i++)
{
var circleVector = getCircleVector(i);
var textureCoordinate = new Vector2(i / tessellation, 0);
var radius = radiusBottom;
for (var s = 0; s <= subdivisions; s++)
{
var position = circleVector.scale(radius);
position.addInPlace(_base.add(offset.scale(s)));
textureCoordinate.y += 1 / subdivisions;
radius += (radiusTop - radiusBottom) / subdivisions;
positions.Add(position.x, position.y, position.z);
uvs.Add(textureCoordinate.x, textureCoordinate.y);
}
}
subdivisions += 1;
for (var s = 0; s < subdivisions - 1; s++)
{
for (var i = 0; i <= tessellation; i++)
{
indices.Add(i * subdivisions + s);
indices.Add((i * subdivisions + (s + subdivisions)) % (stride * subdivisions));
indices.Add(i * subdivisions + (s + 1));
indices.Add(i * subdivisions + (s + 1));
indices.Add((i * subdivisions + (s + subdivisions)) % (stride * subdivisions));
indices.Add((i * subdivisions + (s + subdivisions + 1)) % (stride * subdivisions));
}
}
createCylinderCap(true);
createCylinderCap(false);
ComputeNormals(positions, indices, normals);
var vertexData = new VertexData();
vertexData.indices = indices;
vertexData.positions = positions;
vertexData.normals = normals;
vertexData.uvs = uvs;
return(vertexData);
}
public Plane(int id, Scene scene, double size, bool canBeRegenerated = false, Mesh mesh = null)
: base(id, scene, VertexData.CreatePlane(size), canBeRegenerated, mesh)
{
this.size = size;
}
public override VertexData _regenerateVertexData()
{
return(VertexData.CreatePlane(this.size));
}
public override VertexData _regenerateVertexData()
{
return(VertexData.CreateGround(this.width, this.height, this.subdivisions));
}
public override VertexData _regenerateVertexData()
{
return(VertexData.CreateTiledGround(this.xmin, this.zmin, this.xmax, this.zmax, this.subdivisions, this.precision));
}
public override VertexData _regenerateVertexData()
{
return(VertexData.CreateTorus(this.diameter, this.thickness, this.tessellation));
}
public override VertexData _regenerateVertexData()
{
return(VertexData.CreateCylinder(this.height, this.diameterTop, this.diameterBottom, this.tessellation, this.subdivisions));
}
public override VertexData _regenerateVertexData()
{
return(VertexData.CreateSphere(this.segments, this.diameter));
}
public Sphere(int id, Scene scene, int segments, double diameter, bool canBeRegenerated = false, Mesh mesh = null)
: base(id, scene, VertexData.CreateSphere(segments, diameter), canBeRegenerated, mesh)
{
this.segments = segments;
this.diameter = diameter;
}
/// <summary>
/// </summary>
/// <param name="vertexData">
/// </param>
/// <param name="updatable">
/// </param>
public virtual void setAllVerticesData(VertexData vertexData, bool updatable = false)
{
vertexData.applyToGeometry(this, updatable);
}