private int drawKoch(SceneBrep scene, Matrix4 m, string param)
{
Vector3 A, B, C, D;
int one, two, three, four;
//float a = 1.0f;
A.X = 0;
A.Y = 0;
A.Z = 0;
one = scene.AddVertex(Vector3.TransformPosition(A, m));
B.X = 1.0f;
B.Y = 1.0f;
B.Z = 0;
two = scene.AddVertex(Vector3.TransformPosition(B, m));
C.X = 0;
C.Y = 1.0f;
C.Z = 1.0f;
three = scene.AddVertex(Vector3.TransformPosition(C, m));
D.X = 1.0f;
D.Y = 0;
D.Z = 1.0f;
four = scene.AddVertex(Vector3.TransformPosition(D, m));
scene.AddLine(one, two);
scene.AddLine(two, three);
scene.AddLine(three, one);
scene.AddLine(four, one);
scene.AddLine(four, two);
scene.AddLine(four, three);
drawKochRecursive(depthParam, scene, m, param, A, B, C, D);
return(segments + (int)Math.Pow(4, depthParam) + 1);
}
private int CreateTetrahedron(SceneBrep scene, Matrix4 m, Vector3 center, float size)
{
int[] v = new int[4];
float z = (float)(size * Math.Sqrt(0.5));
Vector3 A = new Vector3(size, 0.0f, -z);
Vector3 B = new Vector3(-size, 0.0f, -z);
Vector3 C = new Vector3(0.0f, size, z);
Vector3 D = new Vector3(0.0f, -size, z);
// vertices:
v[0] = scene.AddVertex(Vector3.TransformPosition(A, m));
v[1] = scene.AddVertex(Vector3.TransformPosition(B, m));
v[2] = scene.AddVertex(Vector3.TransformPosition(C, m));
v[3] = scene.AddVertex(Vector3.TransformPosition(D, m));
// normal vectors:
scene.SetNormal(v[0], Vector3.TransformVector(A, m).Normalized());
scene.SetNormal(v[1], Vector3.TransformVector(B, m).Normalized());
scene.SetNormal(v[2], Vector3.TransformVector(C, m).Normalized());
scene.SetNormal(v[3], Vector3.TransformVector(D, m).Normalized());
// texture coordinates:
scene.SetTxtCoord(v[0], new Vector2(1.0f, 0.0f));
scene.SetTxtCoord(v[1], new Vector2(0.0f, 0.0f));
scene.SetTxtCoord(v[2], new Vector2(1.0f, 1.0f));
scene.SetTxtCoord(v[3], new Vector2(0.0f, 1.0f));
// colors:
long seed = (long)Math.Min(long.MaxValue, (m.Row3.LengthSquared * 10000.0f));
seed = RandomStatic.numericRecipes(seed);
float r = (seed & 255) / 255.0f;
seed = RandomStatic.numericRecipes(seed);
float g = (seed & 255) / 255.0f;
seed = RandomStatic.numericRecipes(seed);
float b = (seed & 255) / 255.0f;
scene.SetColor(v[0], new Vector3(r, g, b));
r = Math.Min(r + 0.2f, 1.0f);
scene.SetColor(v[1], new Vector3(r, g, b));
g = Math.Min(g + 0.2f, 1.0f);
scene.SetColor(v[2], new Vector3(r, g, b));
b = Math.Min(b + 0.2f, 1.0f);
scene.SetColor(v[3], new Vector3(r, g, b));
// triangle faces:
scene.AddTriangle(v[0], v[1], v[2]);
scene.AddTriangle(v[2], v[1], v[3]);
scene.AddTriangle(v[1], v[0], v[3]);
scene.AddTriangle(v[2], v[3], v[0]);
return(4);
}
private void firstCircle(Vector3 v1, Vector3 v2, SceneBrep scene, Matrix4 m)
{
Vector3 dif = (v2 - v1) * size;
Vector3 rdif = (v2 - v1) * (1 - size);
last_circle = createCircleAround(v1, v2);
float s = radius / curve.current_count;
last_circle = Transforms.scale(last_circle, s, s, s);
connect_indices = new int[cdetail];
Vector3 center = getCenter(last_circle);
for (int i = 0; i < cdetail; i++)
{
connect_indices[i] = scene.AddVertex(Vector3.TransformPosition(last_circle[i] + v1, m));
scene.SetNormal(connect_indices[i], Vector3.TransformVector(last_circle[i] - center, m).Normalized());
float r = (last_circle[i].X + v1.X + 1.1f) / 2.5f;
float g = (last_circle[i].Y + v1.Y + 1.1f) / 2.5f;
float b = (last_circle[i].Z + v1.Z + 1.1f) / 2.5f;
scene.SetColor(connect_indices[i], new Vector3(r, g, b));
}
for (int i = 0; i < cdetail; i++)
{
last_circle[i] += v1 + rdif;
}
}
private int lastCircle(Vector3 v1, Vector3 v2, SceneBrep scene, Matrix4 m)
{
_ = createCircleAround(v1, v2);
Vector3 center = getCenter(last_circle);
Vector3 dif = (v2 - v1) * size;
_ = (v2 - v1) * (1 - size);
int[] v = new int[cdetail];
for (int i = 0; i < cdetail; i++)
{
v[i] = scene.AddVertex(Vector3.TransformPosition(last_circle[i] + dif, m));
scene.SetNormal(v[i], Vector3.TransformVector(last_circle[i] - center, m).Normalized());
float r = (last_circle[i].X + 1.1f) / 2.5f;
float g = (last_circle[i].Y + 1.1f) / 2.5f;
float b = (last_circle[i].Z + 1.1f) / 2.5f;
scene.SetColor(v[i], new Vector3(r, g, b));
}
for (int i = 0; i < cdetail - 1; i++)
{
scene.AddTriangle(connect_indices[i], v[i], connect_indices[i + 1]);
scene.AddTriangle(connect_indices[i + 1], v[i], v[i + 1]);
}
scene.AddTriangle(connect_indices[cdetail - 1], v[cdetail - 1], connect_indices[0]);
scene.AddTriangle(connect_indices[0], v[cdetail - 1], v[0]);
return(cdetail * 2);
}
private int drawRose(SceneBrep scene, Matrix4 m, string param)
{
int number_of_points = segments;
double period = Math.PI * d;
if ((n % 2 == 0) || (d % 2 == 0))
{
period *= 2;
}
double s = 0.0;
double ds = 1.0 / number_of_points;
double dtheta = period / number_of_points;
List <int> points = new List <int>();
double k = (double)n / d;
for (int i = 0; i < number_of_points; i++)
{
double theta = i * dtheta;
double r = scale * Math.Cos(k * theta);
float x = (float)(r * Math.Cos(theta * ratioX));
float y = (float)(r * Math.Sin(theta * ratioY));
float z = (float)(r * Math.Cos(theta * i * ratioZ));
if (noRatioZ)
{
z = (float)(r * Math.Cos(theta));
}
if (noRatioX)
{
x = (float)(r * Math.Cos(theta));
}
if (noRatioY)
{
y = (float)(r * Math.Sin(theta));
}
Vector3 A = new Vector3(x, y, z);
int v = scene.AddVertex(Vector3.TransformPosition(A, m));
points.Add(v);
scene.SetTxtCoord(v, new Vector2((float)s, (float)s));
System.Drawing.Color c = Raster.Draw.ColorRamp(0.5 * (s + 1.0));
scene.SetColor(v, new Vector3(c.R / 255.0f, c.G / 255.0f, c.B / 255.0f));
s += ds;
}
for (int i = 0; i < number_of_points - 1; i++)
{
scene.AddLine(points[i], points[i + 1]);
}
scene.AddLine(points[0], points[points.Count - 1]);
return(number_of_points);
}
private int drawTetrahedron(SceneBrep scene, Matrix4 m, string param)
{
segments = 4;
scene.Reserve(segments + (int)Math.Pow(4, depthParam) + 1);
/*c.Line(0, 0, 0, c.Height);
* c.Line(0, c.Height, c.Width, c.Height / 2);
* c.Line(c.Width, c.Height / 2, 0, 0);
*/
Vector3 A, B, C, D;
int one, two, three, four;
//float a = 1.0f;
A.X = 0;
A.Y = 0;
A.Z = 0;
one = scene.AddVertex(Vector3.TransformPosition(A, m));
B.X = 1.0f;
B.Y = 1.0f;
B.Z = 0;
two = scene.AddVertex(Vector3.TransformPosition(B, m));
C.X = 0;
C.Y = 1.0f;
C.Z = 1.0f;
three = scene.AddVertex(Vector3.TransformPosition(C, m));
D.X = 1.0f;
D.Y = 0;
D.Z = 1.0f;
four = scene.AddVertex(Vector3.TransformPosition(D, m));
scene.AddLine(one, two);
scene.AddLine(two, three);
scene.AddLine(three, one);
scene.AddLine(four, one);
scene.AddLine(four, two);
scene.AddLine(four, three);
drawTetrahedronRecursive(depthParam, scene, m, param, A, B, C, D);
return(segments + (int)Math.Pow(4, depthParam) + 1);
}
internal void RenderSceneJustCurve(SceneBrep scene)
{
for (int i = 0; i < Vertices.Count; i++)
{
scene.AddVertex(Vertices[i]);
if (i > 0)
{
scene.AddLine(i - 1, i);
}
}
scene.AddLine(0, Vertices.Count - 1);
}
private int drawLineBezier(SceneBrep scene, Matrix4 m, string param, Vector3 P0, Vector3 P1, Vector3 P2)
{
int segm = 200;
float hun = 100.0f;
List <int> pointsList = new List <int>();
addCube(scene, m, param);
//P0 -= delta; P1 -= delta;P2 -= delta;
for (int i = 0; i <= 100; i++)
{
float t = ((float)(i)) / hun;
Vector3 P = (1 - t) * ((1 - t) * P0 + t * P1) + t * ((1 - t) * P1 + t * P2);
//float x = (1-t)*(1-t)*x1 + 2*(1-t)*t*x2+t*t*x3;
//float y = (1-t)*(1-t)*y1 + 2*(1-t)*t*y2+t*t*y3;
pointsList.Add(scene.AddVertex(Vector3.TransformPosition(P, m)));
}
for (int i = 0; i < pointsList.Count - 1; i++)
{
scene.AddLine(pointsList[i], pointsList[i + 1]);
}
int p0, p1, p2;
p0 = scene.AddVertex(Vector3.TransformPosition(P0, m));
p1 = scene.AddVertex(Vector3.TransformPosition(P1, m));
p2 = scene.AddVertex(Vector3.TransformPosition(P2, m));
scene.AddLine(p0, p1);
scene.AddLine(p1, p2);
return(segm + 2);
}
/// <summary>
/// Construct a new Brep solid (preferebaly closed = regular one).
/// </summary>
/// <param name="scene">B-rep scene to be modified</param>
/// <param name="m">Transform matrix (object-space to world-space)</param>
/// <param name="param">Shape parameters if needed</param>
/// <returns>Number of generated faces (0 in case of failure)</returns>
public int AddMesh(SceneBrep scene, Matrix4 m, string param)
{
// {{ TODO: put your Mesh-construction code here
parseParams(param);
// If there will be large number of new vertices, reserve space for them to save time.
scene.Reserve(segments + 1);
double t = 0.0;
double dt = maxT / segments;
double s = 0.0; // for both texture coordinate & color ramp
double ds = 1.0 / segments;
int vPrev = 0;
Vector3 A;
for (int i = 0; i <= segments; i++)
{
// New vertex's coordinates.
A.X = (float)(radius * Math.Cos(kx * t + dx));
A.Y = (float)(radius * Math.Cos(ky * t + dy));
A.Z = (float)(radius * Math.Cos(kz * t + dz));
// New vertex.
int v = scene.AddVertex(Vector3.TransformPosition(A, m));
// Vertex attributes.
scene.SetTxtCoord(v, new Vector2((float)s, (float)s));
System.Drawing.Color c = Raster.Draw.ColorRamp(0.5 * (s + 1.0));
scene.SetColor(v, new Vector3(c.R / 255.0f, c.G / 255.0f, c.B / 255.0f));
// New line?
if (i > 0)
{
scene.AddLine(vPrev, v);
}
// Next vertex.
t += dt;
s += ds;
vPrev = v;
}
// Thick line (for rendering).
scene.LineWidth = 3.0f;
return(segments);
// }}
}
private int drawOctahedron(SceneBrep scene, Matrix4 m, string param, float sc, Vector3 color, double s, double theta)
{
int one, two, three, four, five, six;
float localScale = (float)sc;
Vector4 row1 = new Vector4((float)Math.Cos(theta), (float)-Math.Sin(theta), 0, 0);
Vector4 row2 = new Vector4((float)Math.Sin(theta), (float)Math.Cos(theta), 0, 0);
Vector4 row3 = new Vector4(0, 0, 1, 0);
Vector4 row4 = new Vector4(0, 0, 0, 1);
m = new Matrix4(row1, row2, row3, row4);
Vector3 A = new Vector3(localScale, 0, 0);
one = scene.AddVertex(Vector3.TransformPosition(A, m));
A = new Vector3(0, localScale, 0);
two = scene.AddVertex(Vector3.TransformPosition(A, m));
A = new Vector3(-localScale, 0, 0);
three = scene.AddVertex(Vector3.TransformPosition(A, m));
A = new Vector3(0, -localScale, 0);
four = scene.AddVertex(Vector3.TransformPosition(A, m));
A = new Vector3(0, 0, localScale);
five = scene.AddVertex(Vector3.TransformPosition(A, m));
A = new Vector3(0, 0, -localScale);
six = scene.AddVertex(Vector3.TransformPosition(A, m));
scene.SetTxtCoord(one, new Vector2((float)s, (float)s));
scene.SetTxtCoord(two, new Vector2((float)s, (float)s));
scene.SetTxtCoord(three, new Vector2((float)s, (float)s));
scene.SetTxtCoord(four, new Vector2((float)s, (float)s));
scene.SetTxtCoord(five, new Vector2((float)s, (float)s));
scene.SetTxtCoord(six, new Vector2((float)s, (float)s));
scene.SetColor(one, color);
scene.SetColor(two, color);
scene.SetColor(three, color);
scene.SetColor(four, color);
scene.SetColor(five, color);
scene.SetColor(six, color);
scene.AddLine(one, two);
scene.AddLine(two, three);
scene.AddLine(three, four);
scene.AddLine(four, one);
scene.AddLine(five, one);
scene.AddLine(five, two);
scene.AddLine(five, three);
scene.AddLine(five, four);
scene.AddLine(six, one);
scene.AddLine(six, two);
scene.AddLine(six, three);
scene.AddLine(six, four);
return(6);
}
/// <summary>
/// Do Loop subdivision of the input control triangle mesh.
/// </summary>
/// <param name="scene">Input scene (must not be changed).</param>
/// <param name="epsilon">Reference error toleration (size of undivided triangle).</param>
/// <param name="normals">Generate normals? (optional)</param>
/// <param name="colors">Generate colors? (optional)</param>
/// <param name="txtcoord">Generate texture coordinates? (optional)</param>
/// <param name="time">Current time for animation (optional)</param>
/// <param name="param">Optional additional parameters.</param>
/// <returns>Number of generated points.</returns>
public int Subdivide(SceneBrep scene, float epsilon, bool normals, bool colors, bool txtcoord, float time, string param)
{
result = scene.Clone();
// !!!{{ TODO: put your Loop subdivision code here
// pilot: do one (trivial) division
int triangles = result.Triangles;
int tr;
for (tr = 0; tr < triangles; tr++)
{
int A, B, C;
result.GetTriangleVertices(tr, out A, out B, out C);
Vector3 vA = result.GetVertex(A);
Vector3 vB = result.GetVertex(B);
Vector3 vC = result.GetVertex(C);
Vector3 vA2 = (vB + vC) * 0.5f;
Vector3 vB2 = (vA + vC) * 0.5f;
Vector3 vC2 = (vA + vB) * 0.5f;
int A2 = result.AddVertex(vA2);
int B2 = result.AddVertex(vB2);
int C2 = result.AddVertex(vC2);
result.AddTriangle(B2, C2, A2);
result.AddTriangle(B2, A2, C);
result.AddTriangle(C2, B, A2);
result.SetTriangleVertices(tr, A, C2, B2);
}
//result.BuildCornerTable();
return(result.Vertices);
// !!!}}
}
internal void RenderSceneSimpleTube(SceneBrep scene)
{
int total = -1;
for (int i = 0; i < MeshVertices.Count; i++)
{
for (int j = 0; j < MeshVertices[i].Count; j++)
{
scene.AddVertex(MeshVertices[i][j]);
total++;
}
//AddToScene(scene, MeshVertices[i], total);
if (i > 0)
{
ConnectTwoCircles(scene, MeshVertices, total, i);
}
}
ConnectTwoCircles(scene, MeshVertices, total, 0);
}
private void drawTetrahedronRecursive(int depth, SceneBrep scene, Matrix4 m, string param, Vector3 a, Vector3 b, Vector3 c, Vector3 d)
{
if (depth == 0)
{
return;
}
Vector3 stand;
stand.X = 0;
stand.Y = 0;
stand.Z = 0;
int ab, ac, ad, bc, bd, cd;
Vector3 AB = stand, AC = stand, AD = stand;
Vector3 BC = stand, BD = stand;
Vector3 CD = stand;
calculateMiddle(a, b, c, d, ref AB, ref AC, ref AD, ref BC, ref BD, ref CD);
ab = scene.AddVertex(Vector3.TransformPosition(AB, m));
ac = scene.AddVertex(Vector3.TransformPosition(AC, m));
ad = scene.AddVertex(Vector3.TransformPosition(AD, m));
bc = scene.AddVertex(Vector3.TransformPosition(BC, m));
bd = scene.AddVertex(Vector3.TransformPosition(BD, m));
cd = scene.AddVertex(Vector3.TransformPosition(CD, m));
scene.AddLine(ab, ac);
scene.AddLine(ac, bc);
scene.AddLine(bc, ab);
scene.AddLine(ab, bd);
scene.AddLine(bd, ad);
scene.AddLine(ad, ab);
scene.AddLine(ac, ad);
scene.AddLine(ad, cd);
scene.AddLine(cd, ac);
scene.AddLine(bc, cd);
scene.AddLine(cd, bd);
scene.AddLine(bd, bc);
drawTetrahedronRecursive(depth - 1, scene, m, param, AB, b, BC, BD);
drawTetrahedronRecursive(depth - 1, scene, m, param, a, AB, AC, AD);
drawTetrahedronRecursive(depth - 1, scene, m, param, AC, BC, c, CD);
drawTetrahedronRecursive(depth - 1, scene, m, param, AD, BD, CD, d);
}
/// <summary>
/// Construct a new control mesh for subdivision (formally the Brep solid..).
/// </summary>
/// <param name="scene">B-rep scene to be modified</param>
/// <param name="m">Transform matrix (object-space to world-space)</param>
/// <param name="time">Current time in seconds</param>
/// <param name="param">Shape parameters if needed</param>
public void ControlMesh(SceneBrep scene, Matrix4 m, float time, string param)
{
// !!!{{ TODO: put your Control-mesh-construction code here
List <int> upper = new List <int>();
upper.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(0, 1, 0), m)));
upper.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(1, 1, 0), m)));
upper.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(1, 1, 1), m)));
upper.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(0, 1, 1), m)));
List <int> lower = new List <int>();
lower.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(0, 0, 0), m)));
lower.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(1, 0, 0), m)));
lower.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(1, 0, 1), m)));
lower.Add(scene.AddVertex(Vector3.TransformPosition(new Vector3(0, 0, 1), m)));
// Lower face
scene.AddTriangle(lower[0], lower[1], lower[2]);
scene.AddTriangle(lower[2], lower[3], lower[0]);
// Upper face
scene.AddTriangle(upper[2], upper[1], upper[0]);
scene.AddTriangle(upper[0], upper[3], upper[2]);
// Side faces
for (int i = 0; i < upper.Count; i++)
{
int j = i < (upper.Count - 1) ? i + 1 : 0;
scene.AddTriangle(upper[i], upper[j], lower[i]);
scene.AddTriangle(lower[i], upper[j], lower[j]);
}
// !!!}}
}
private int drawSpiral(SceneBrep scene, Matrix4 m, string param)
{
int number_of_points = segments;
double period = Math.PI * scale;
double dtheta = period / number_of_points;
List <int> points = new List <int>();
double ds = 1.0 / (double)number_of_points;
double s = 0.0;
for (int i = 0; i < number_of_points; i++)
{
double theta = i * dtheta;
float x = (float)(s * s * Math.Cos(theta * ratioX));
float y = (float)(s * s * Math.Sin(theta * ratioY));
float z = (float)(s * s);
Vector3 A = new Vector3(x, y, z);
int v = scene.AddVertex(Vector3.TransformPosition(A, m));
scene.SetTxtCoord(v, new Vector2((float)s, (float)s));
System.Drawing.Color c = Raster.Draw.ColorRamp(0.5 * (s + 1.0));
scene.SetColor(v, new Vector3(c.R / 255.0f, c.G / 255.0f, c.B / 255.0f));
points.Add(v);
s += ds;
}
for (int i = 0; i < number_of_points - 1; i++)
{
scene.AddLine(points[i], points[i + 1]);
}
//scene.AddLine(points[0], points[points.Count - 1]);
return(number_of_points);
}
private int createBentPipe(SceneBrep scene, Matrix4 m, Vector3 v1, Vector3 v2, Vector3 v3)
{
Vector3[] centers = new Vector3[bdetail];
Vector3 oned = (v1 - v2) * size;
Vector3 twod = (v3 - v2) * size;
Vector3 rtwod = (v3 - v2) * (1 - size);
Vector3 rot_point = v2 + oned + twod;
Vector3 test_point = oned + twod;
test_point.X = Math.Abs(test_point.X);
test_point.Y = Math.Abs(test_point.Y);
test_point.Z = Math.Abs(test_point.Z);
double angle = -(Math.PI / 2) / (bdetail - 1);
char axis;
if (test_point.Y < test_point.X)
{
axis = (test_point.Z < test_point.Y) ? 'z' : 'y';
}
else
{
axis = (test_point.Z < test_point.X) ? 'z' : 'x';
}
MyMatrix4 mat = MyMatrix4.getSingleRotationMatrix(angle, axis);
float l = longestSide(last_circle[0] - v1);
Vector3 sp = rotateAroundPoint(last_circle[0], rot_point, mat);
float l2 = longestSide(sp - v1);
if (l2 < l)
{
mat = MyMatrix4.getSingleRotationMatrix(-angle, axis);
}
Vector3[] field = new Vector3[bdetail * cdetail];
Array.Copy(last_circle, field, cdetail);
centers[0] = getCenter(last_circle);
Vector3[] new_circle = new Vector3[cdetail];
for (int i = 1; i < bdetail; i++)
{
Array.ConstrainedCopy(field, (i - 1) * cdetail, new_circle, 0, cdetail);
new_circle = rotateAroundPoint(new_circle, rot_point, mat);
Array.ConstrainedCopy(new_circle, 0, field, i * cdetail, cdetail);
centers[i] = getCenter(new_circle);
}
Array.ConstrainedCopy(field, (bdetail - 1) * cdetail, last_circle, 0, cdetail);
for (int i = 0; i < cdetail; i++)
{
last_circle[i] += rtwod - twod;
}
int[] v = new int[field.Length];
for (int i = 0; i < field.Length; i++)
{
v[i] = scene.AddVertex(Vector3.TransformPosition(field[i], m));
scene.SetNormal(v[i], Vector3.TransformVector(field[i] - centers[i / cdetail], m).Normalized());
float r = (field[i].X + 1.1f) / 2.5f;
float g = (field[i].Y + 1.1f) / 2.5f;
float b = (field[i].Z + 1.1f) / 2.5f;
scene.SetColor(v[i], new Vector3(r, g, b));
}
for (int i = 0; i < cdetail - 1; i++)
{
scene.AddTriangle(connect_indices[i], v[i], connect_indices[i + 1]);
scene.AddTriangle(connect_indices[i + 1], v[i], v[i + 1]);
}
scene.AddTriangle(connect_indices[cdetail - 1], v[cdetail - 1], connect_indices[0]);
scene.AddTriangle(connect_indices[0], v[cdetail - 1], v[0]);
for (int i = 0; i < (bdetail - 1); i++)
{
for (int j = 0; j < cdetail - 1; j++)
{
int a = i * cdetail + j;
scene.AddTriangle(v[a], v[a + cdetail], v[a + 1]);
scene.AddTriangle(v[a + 1], v[a + cdetail], v[a + cdetail + 1]);
}
int b = i * cdetail + cdetail - 1;
scene.AddTriangle(v[b], v[b + cdetail], v[b - cdetail + 1]);
scene.AddTriangle(v[b - cdetail + 1], v[b + cdetail], v[b + 1]);
}
Array.ConstrainedCopy(v, (bdetail - 1) * cdetail, connect_indices, 0, cdetail);
return(bdetail * cdetail * 2 + cdetail * 2);
}
/// <summary>
/// Reads one 3D scene from a given stream (containing text variant of Wavefront OBJ format).
/// </summary>
/// <param name="reader">Already open text reader</param>
/// <param name="scene">Scene to be modified</param>
/// <param name="scene">Matrix for instancing</param>
/// <returns>Number of faces read</returns>
public int ReadBrep( StreamReader reader, SceneBrep scene, Matrix4 m )
{
if ( reader == null ) return SceneBrep.NULL;
Debug.Assert( scene != null );
int v0 = scene.Vertices;
int lastVertex = v0 - 1;
int faces = 0;
List<Vector3> normals = new List<Vector3>( 256 );
int lastNormal = -1;
int[] f = new int[ 3 ];
do
{
string line = reader.ReadLine();
if ( line == null ) break;
int commentPos = line.IndexOf( COMMENT );
if ( commentPos >= 0 )
line = line.Substring( 0, commentPos );
string[] tokens = line.Split( DELIMITERS , StringSplitOptions.RemoveEmptyEntries );
if ( tokens.Length < 1 ) continue;
switch ( tokens[ 0 ] )
{
case VERTEX:
if ( tokens.Length < 4 ) continue;
Vector3 coord;
if ( !float.TryParse( tokens[ 1 ], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.X ) ||
!float.TryParse( tokens[ 2 ], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.Y ) ||
!float.TryParse( tokens[ 3 ], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.Z ) )
continue;
if ( MirrorConversion )
coord.Z = -coord.Z;
lastVertex = scene.AddVertex( Vector3.Transform( coord, m ) );
break;
case VERTEX_NORMAL:
if ( tokens.Length < 4 ) continue;
Vector3 norm;
if ( !float.TryParse( tokens[ 1 ], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.X ) ||
!float.TryParse( tokens[ 2 ], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.Y ) ||
!float.TryParse( tokens[ 3 ], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.Z ) )
continue;
if ( MirrorConversion )
norm.Z = -norm.Z;
normals.Add( Vector3.TransformNormal( norm, m ) );
lastNormal++;
break;
case FACE:
if ( tokens.Length < 4 ) continue;
int N = tokens.Length - 1;
if ( f.Length < N )
f = new int[ N ];
int i;
for ( i = 0; i < N; i++ ) // read indices for one vertex
{
string[] vt = tokens[ i + 1 ].Split( '/' );
int ti, ni;
ti = ni = 0; // 0 => value not present
// 0 .. vertex coord index
if ( !int.TryParse( vt[ 0 ], out f[ i ] ) ||
f[ i ] == 0 )
break;
if ( f[ i ] > 0 )
f[ i ] = v0 + f[ i ] - 1;
else
f[ i ] = lastVertex + 1 - f[ i ];
if ( vt.Length > 1 )
{
// 1 .. texture coord index (not yet)
if ( !int.TryParse( vt[ 1 ], out ti ) ) ti = 0;
if ( vt.Length > 2 )
{
// 2 .. normal vector index
if ( !int.TryParse( vt[ 2 ], out ni ) ) ni = 0;
}
}
// there was a normal..
if ( ni != 0 )
{
if ( ni > 0 )
ni--;
else
ni = lastNormal + 1 - ni;
if ( ni >= 0 && ni < normals.Count )
scene.SetNormal( f[ i ], normals[ ni ] );
}
}
N = i;
for ( i = 1; i < N - 1; i++ )
{
scene.AddTriangle( f[ 0 ], f[ i ], f[ i + 1 ] );
faces++;
}
break;
}
}
while ( !reader.EndOfStream );
return faces;
}
private int dragonCurve(SceneBrep scene, Matrix4 m, string param)
{
int retValue = 1;
List <int> turnSequence = new List <int>();
for (int i = 0; i < depthParam; i++)
{
var copy = new List <int>(turnSequence);
copy.Reverse();
turnSequence.Add(1);
foreach (int turn in copy)
{
turnSequence.Add(-turn);
}
}
bool increasez = false;
int one, two;
double z2;
double startingAngle = -depthParam * (Math.PI / 4);
double side = 400 / Math.Pow(2, depthParam / 2.0);
double angle = startingAngle;
int x1 = 230, y1 = 350;
int x2 = x1 + (int)(Math.Cos(angle) * side);
int y2 = y1 + (int)(Math.Sin(angle) * side);
Vector3 A = new Vector3(x1, y1, 0);
one = scene.AddVertex(Vector3.TransformPosition(A, m));
A = new Vector3(x2, y2, 0);
two = scene.AddVertex(Vector3.TransformPosition(A, m));
scene.AddLine(one, two);
x1 = x2;
y1 = y2;
one = two;
int turns = turnSequence.Count / 100;
int j = 0;
z2 = 1;
int direction = 0;
foreach (int turn in turnSequence)
{
angle += turn * (Math.PI / 2);
x2 = x1 + (int)(Math.Cos(angle) * side);
y2 = y1 + (int)(Math.Sin(angle) * side);
if (j >= turns)
{
j = 0;
increasez = !increasez;
if (increasez)
{
direction++;
}
}
if (increasez)
{
if (direction % 2 == 0)
{
z2 = z2 + Math.Abs((int)(Math.Cos(angle) * side));
}
else
{
z2 = z2 - Math.Abs((int)(Math.Cos(angle) * side));
}
}
A = new Vector3(x2, y2, (float)z2);
two = scene.AddVertex(Vector3.TransformPosition(A, m));
scene.AddLine(one, two);
x1 = x2;
y1 = y2;
one = two;
retValue++;
j++;
}
return(retValue);
}
private void addCube(SceneBrep scene, Matrix4 m, string param)
{
Vector3 P0, P1, P2, P3;
Vector3 D0, D1, D2, D3;
P0.X = 0;
P0.Y = 0;
P0.Z = 0;
P1.X = 1;
P1.Y = 0;
P1.Z = 0;
P2.X = 1;
P2.Y = 1;
P2.Z = 0;
P3.X = 0;
P3.Y = 1;
P3.Z = 0;
D0.X = 0;
D0.Y = 0;
D0.Z = 1;
D1.X = 1;
D1.Y = 0;
D1.Z = 1;
D2.X = 1;
D2.Y = 1;
D2.Z = 1;
D3.X = 0;
D3.Y = 1;
D3.Z = 1;
/*Vector3 delta;
* delta.X = 0.5f;
* delta.Y = 0.5f;
* delta.Z = 0.5f;
*
* P0 -= delta;P1 -= delta;P2 -= delta;P3 -= delta;
* D0 -= delta;
* D1 -= delta;
* D2 -= delta;
* D3 -= delta;*/
int p0 = scene.AddVertex(Vector3.TransformPosition(P0, m));
int p1 = scene.AddVertex(Vector3.TransformPosition(P1, m));
int p2 = scene.AddVertex(Vector3.TransformPosition(P2, m));
int p3 = scene.AddVertex(Vector3.TransformPosition(P3, m));
int d0 = scene.AddVertex(Vector3.TransformPosition(D0, m));
int d1 = scene.AddVertex(Vector3.TransformPosition(D1, m));
int d2 = scene.AddVertex(Vector3.TransformPosition(D2, m));
int d3 = scene.AddVertex(Vector3.TransformPosition(D3, m));
scene.AddLine(p0, p1);
scene.AddLine(p1, p2);
scene.AddLine(p2, p3);
scene.AddLine(p3, p0);
scene.AddLine(d0, d1);
scene.AddLine(d1, d2);
scene.AddLine(d2, d3);
scene.AddLine(d3, d0);
scene.AddLine(p0, d0);
scene.AddLine(p1, d1);
scene.AddLine(p2, d2);
scene.AddLine(p3, d3);
}
/// <summary>
/// Reads one 3D scene from a given stream (containing text variant of Wavefront OBJ format).
/// </summary>
/// <param name="reader">Already open text reader</param>
/// <param name="scene">Scene to be modified</param>
/// <param name="scene">Matrix for instancing</param>
/// <returns>Number of faces read</returns>
public int ReadBrep(StreamReader reader, SceneBrep scene, Matrix4 m)
{
if (reader == null)
{
return(SceneBrep.NULL);
}
Debug.Assert(scene != null);
int v0 = scene.Vertices;
int lastVertex = v0 - 1;
int faces = 0;
List <Vector2> txtCoords = new List <Vector2>(256);
List <Vector3> normals = new List <Vector3>(256);
int lastTxtCoord = -1;
int lastNormal = -1;
int[] f = new int[3];
do
{
string line = reader.ReadLine();
if (line == null)
{
break;
}
int commentPos = line.IndexOf(COMMENT);
if (commentPos >= 0)
{
line = line.Substring(0, commentPos);
}
string[] tokens = line.Split(DELIMITERS, StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length < 1)
{
continue;
}
switch (tokens[0])
{
case VERTEX:
if (tokens.Length < 4)
{
continue;
}
Vector3 coord;
if (!float.TryParse(tokens[1], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.X) ||
!float.TryParse(tokens[2], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.Y) ||
!float.TryParse(tokens[3], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.Z))
{
continue;
}
if (MirrorConversion)
{
coord.Z = -coord.Z;
}
lastVertex = scene.AddVertex(Vector3.TransformPosition(coord, m));
break;
case VERTEX_TEXTURE:
if (tokens.Length < 3)
{
continue;
}
Vector2 txtCoord;
if (!float.TryParse(tokens[1], NumberStyles.Float, CultureInfo.InvariantCulture, out txtCoord.X) ||
!float.TryParse(tokens[2], NumberStyles.Float, CultureInfo.InvariantCulture, out txtCoord.Y))
{
continue;
}
if (TextureUpsideDown)
{
txtCoord.Y = 1.0f - txtCoord.Y;
}
txtCoords.Add(txtCoord);
lastTxtCoord++;
break;
case VERTEX_NORMAL:
if (tokens.Length < 4)
{
continue;
}
Vector3 norm;
if (!float.TryParse(tokens[1], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.X) ||
!float.TryParse(tokens[2], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.Y) ||
!float.TryParse(tokens[3], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.Z))
{
continue;
}
if (MirrorConversion)
{
norm.Z = -norm.Z;
}
normals.Add(Vector3.TransformNormal(norm, m));
lastNormal++;
break;
case FACE:
if (tokens.Length < 4)
{
continue;
}
int N = tokens.Length - 1;
if (f.Length < N)
{
f = new int[N];
}
int i;
for (i = 0; i < N; i++) // read indices for one vertex
{
string[] vt = tokens[i + 1].Split('/');
int ti, ni;
ti = ni = 0; // 0 => value not present
// 0 .. vertex coord index
if (!int.TryParse(vt[0], out f[i]) ||
f[i] == 0)
{
break;
}
if (f[i] > 0)
{
f[i] = v0 + f[i] - 1;
}
else
{
f[i] = lastVertex + 1 - f[i];
}
if (vt.Length > 1)
{
// 1 .. texture coord index (not yet)
if (!int.TryParse(vt[1], out ti))
{
ti = 0;
}
if (vt.Length > 2)
{
// 2 .. normal vector index
if (!int.TryParse(vt[2], out ni))
{
ni = 0;
}
}
}
// there was a texture coord..
if (ti != 0)
{
if (ti > 0)
{
ti--;
}
else
{
ti = lastTxtCoord + 1 - ti;
}
if (ti >= 0 && ti < txtCoords.Count)
{
scene.SetTxtCoord(f[i], txtCoords[ti]);
}
}
// there was a normal..
if (ni != 0)
{
if (ni > 0)
{
ni--;
}
else
{
ni = lastNormal + 1 - ni;
}
if (ni >= 0 && ni < normals.Count)
{
scene.SetNormal(f[i], normals[ni]);
}
}
}
N = i;
for (i = 1; i < N - 1; i++)
{
scene.AddTriangle(f[0], f[i], f[i + 1]);
faces++;
}
break;
}
} while (!reader.EndOfStream);
return(faces);
}
public int ReadBrep(string fileName, SceneBrep scene)
{
Debug.Assert(scene != null);
this.scene = scene;
scene.Reset();
if (fileName == null || fileName.Length == 0)
{
throw new IOException("Invalid file name");
}
if (fileName.EndsWith(".gz"))
{
headerReader = new StreamReader(new GZipStream(new FileStream(fileName, FileMode.Open), CompressionMode.Decompress));
}
else
{
var fs = new FileStream(fileName, FileMode.Open);
headerReader = new StreamReader(fs);
}
// prepare buffers for data filling
if (!ParseHeader())
{
return(-1);
}
// read vertices
var vertexReader = GetReader("vertex");
var element = vertexReader.ReadElement();
List <Vector2> txtCoords = new List <Vector2>(256);
int[] f = new int[3];
int v0 = scene.Vertices;
int lastVertex = v0 - 1;
while (element != null)
{
lastVertex = scene.AddVertex(Vector3.TransformPosition(element.GetVertex(), matrix));
if (DoNormals)
{
Vector3.TransformNormal(element.GetNormal(), matrix);
scene.SetNormal(lastVertex, element.GetNormal());
}
if (DoTxtCoords)
{
scene.SetTxtCoord(lastVertex, element.GetTextureCoordinate());
}
if (DoColors)
{
scene.SetColor(lastVertex, element.GetVertexColor());
}
element = vertexReader.ReadElement();
}
// read triangles
var faceReader = GetReader("face");
element = faceReader.ReadElement();
while (element != null)
{
int A, B, C;
element.GetTriangleVertices(out A, out B, out C);
scene.AddTriangle(A, B, C);
element = faceReader.ReadElement();
}
headerReader.Close();
vertexReader.Close();
faceReader.Close();
return(scene.Triangles);
}
/// <summary>
/// Construct a new Brep solid (preferebaly closed = regular one).
/// </summary>
/// <param name="scene">B-rep scene to be modified</param>
/// <param name="m">Transform matrix (object-space to world-space)</param>
/// <param name="param">Shape parameters if needed</param>
/// <returns>Number of generated faces (0 in case of failure)</returns>
public int AddMesh(SceneBrep scene, Matrix4 m, string param)
{
parseParams(param);
scene.LineWidth = lineWidth;
// create shape
// create vertices in 3D local space
Vector3[] shapeVerticesLocal = new Vector3[]
{
new Vector3(0, 1, depth),
new Vector3(0.866025f, 0.5f, depth),
new Vector3(0.866025f, -0.5f, depth),
new Vector3(0, -1, depth),
new Vector3(-0.866025f, -0.5f, depth),
new Vector3(-0.866025f, 0.5f, depth),
new Vector3(0, 0, depth),
new Vector3(0, 1, -depth),
new Vector3(0.866025f, 0.5f, -depth),
new Vector3(0.866025f, -0.5f, -depth),
new Vector3(0, -1, -depth),
new Vector3(-0.866025f, -0.5f, -depth),
new Vector3(-0.866025f, 0.5f, -depth),
new Vector3(0, 0, -depth),
};
// push vertices to scene and get theirs indexes
int[] shapeVerticesIndex = new int[shapeVerticesLocal.Length];
for (int i = 0; i < shapeVerticesLocal.Length; i++)
{
int vertexIndex = scene.AddVertex(Vector3.TransformPosition(shapeVerticesLocal[i], m));
shapeVerticesIndex[i] = vertexIndex;
scene.SetColor(vertexIndex, new Vector3(0, 0, 0));
}
Vector3[] edgeColors = new Vector3[] { new Vector3(1, 0, 0), new Vector3(1, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 0, 0) };
// { vertex, vertex, color }
List <int[, ]> shapeEdges = new List <int[, ]>();
shapeEdges.Add(new int[2, 3] {
{ 0, 1, 0 }, { 8, 9, 0 }
});
shapeEdges.Add(new int[2, 3] {
{ 1, 2, 1 }, { 9, 13, 1 }
});
shapeEdges.Add(new int[2, 3] {
{ 2, 6, 1 }, { 10, 9, 1 }
});
shapeEdges.Add(new int[2, 3] {
{ 2, 3, 0 }, { 10, 11, 0 }
});
shapeEdges.Add(new int[2, 3] {
{ 3, 4, 1 }, { 11, 13, 1 }
});
shapeEdges.Add(new int[2, 3] {
{ 4, 6, 1 }, { 12, 11, 1 }
});
shapeEdges.Add(new int[2, 3] {
{ 4, 5, 0 }, { 12, 7, 0 }
});
shapeEdges.Add(new int[2, 3] {
{ 5, 0, 1 }, { 7, 13, 1 }
});
shapeEdges.Add(new int[2, 3] {
{ 0, 6, 1 }, { 8, 7, 1 }
});
shapeEdges.Add(new int[2, 3] {
{ 6, 0, 2 }, { 9, 13, 2 }
});
shapeEdges.Add(new int[2, 3] {
{ 6, 2, 2 }, { 11, 13, 2 }
});
shapeEdges.Add(new int[2, 3] {
{ 6, 4, 2 }, { 7, 13, 2 }
});
shapeEdges.Add(new int[2, 3] {
{ 0, 1, 3 }, { 7, 8, 3 }
});
shapeEdges.Add(new int[2, 3] {
{ 1, 2, 3 }, { 8, 9, 3 }
});
shapeEdges.Add(new int[2, 3] {
{ 2, 3, 3 }, { 9, 10, 3 }
});
shapeEdges.Add(new int[2, 3] {
{ 3, 4, 3 }, { 10, 11, 3 }
});
shapeEdges.Add(new int[2, 3] {
{ 4, 5, 3 }, { 11, 12, 3 }
});
shapeEdges.Add(new int[2, 3] {
{ 5, 0, 3 }, { 12, 7, 3 }
});
// push edges to scene
foreach (int[,] group in shapeEdges)
{
scene.AddLine(shapeVerticesIndex[group[0, 0]], shapeVerticesIndex[group[0, 1]]);
scene.AddLine(shapeVerticesIndex[group[1, 0]], shapeVerticesIndex[group[1, 1]]);
}
//push faces to scene
foreach (int[,] group in shapeEdges)
{
for (int i = 0; i < splits; i++)
{
Vector3 beginDiff = shapeVerticesLocal[group[0, 0]] - shapeVerticesLocal[group[0, 1]];
beginDiff /= splits;
Vector3 begin = shapeVerticesLocal[group[0, 0]] - beginDiff * i;
Vector3 endDiff = shapeVerticesLocal[group[1, 0]] - shapeVerticesLocal[group[1, 1]];
endDiff /= splits;
Vector3 end = shapeVerticesLocal[group[1, 0]] - endDiff * i;
int beginIndex = scene.AddVertex(Vector3.TransformPosition(begin, m));
scene.SetColor(beginIndex, edgeColors[group[0, 2]]);
int endIndex = scene.AddVertex(Vector3.TransformPosition(end, m));
scene.SetColor(endIndex, edgeColors[group[1, 2]]);
scene.AddLine(beginIndex, endIndex);
}
}
return(1); // some magic number
}
private void drawKochRecursive(int depth, SceneBrep scene, Matrix4 m, string param, Vector3 a, Vector3 b, Vector3 c, Vector3 d)
{
if (depth == 0)
{
return;
}
Vector3 stand;
stand.X = 0;
stand.Y = 0;
stand.Z = 0;
int ab, ac, ad, bc, bd, cd, headabc, headadb, headacd, headbdc;
Vector3 AB = stand, AC = stand, AD = stand;
Vector3 BC = stand, BD = stand;
Vector3 CD = stand;
calculateMiddle(a, b, c, d, ref AB, ref AC, ref AD, ref BC, ref BD, ref CD);
float lengthOfSide = (float)Math.Sqrt((AB.X - BC.X) * (AB.X - BC.X) + (AB.Y - BC.Y) * (AB.Y - BC.Y) + (AB.Z - BC.Z) * (AB.Z - BC.Z));
float height = lengthOfSide * (float)Math.Sqrt(6) / 3.0f;
Vector3 headABC = calculateHeightVertex(a, b, c, height);
Vector3 headADB = calculateHeightVertex(a, d, b, height);
Vector3 headACD = calculateHeightVertex(a, c, d, height);
Vector3 headBDC = calculateHeightVertex(b, d, c, height);
ab = scene.AddVertex(Vector3.TransformPosition(AB, m));
ac = scene.AddVertex(Vector3.TransformPosition(AC, m));
ad = scene.AddVertex(Vector3.TransformPosition(AD, m));
bc = scene.AddVertex(Vector3.TransformPosition(BC, m));
bd = scene.AddVertex(Vector3.TransformPosition(BD, m));
cd = scene.AddVertex(Vector3.TransformPosition(CD, m));
headabc = scene.AddVertex(Vector3.TransformPosition(headABC, m));
headadb = scene.AddVertex(Vector3.TransformPosition(headADB, m));
headacd = scene.AddVertex(Vector3.TransformPosition(headACD, m));
headbdc = scene.AddVertex(Vector3.TransformPosition(headBDC, m));
scene.AddLine(ab, ac);
scene.AddLine(ac, bc);
scene.AddLine(bc, ab);
scene.AddLine(ab, headabc);
scene.AddLine(ac, headabc);
scene.AddLine(bc, headabc);
scene.AddLine(ab, bd);
scene.AddLine(bd, ad);
scene.AddLine(ad, ab);
scene.AddLine(ab, headadb);
scene.AddLine(bd, headadb);
scene.AddLine(ad, headadb);
scene.AddLine(ac, ad);
scene.AddLine(ad, cd);
scene.AddLine(cd, ac);
scene.AddLine(ac, headacd);
scene.AddLine(ad, headacd);
scene.AddLine(cd, headacd);
scene.AddLine(bc, cd);
scene.AddLine(cd, bd);
scene.AddLine(bd, bc);
scene.AddLine(bc, headbdc);
scene.AddLine(bd, headbdc);
scene.AddLine(cd, headbdc);
drawKochRecursive(depth - 1, scene, m, param, AB, AC, BC, headABC);
drawKochRecursive(depth - 1, scene, m, param, AB, BD, AD, headADB);
drawKochRecursive(depth - 1, scene, m, param, AD, CD, AC, headACD);
drawKochRecursive(depth - 1, scene, m, param, BD, BC, CD, headBDC);
}
/// <summary>
/// Reads one 3D scene from a given stream (containing text variant of Wavefront OBJ format).
/// </summary>
/// <param name="reader">Already open text reader</param>
/// <param name="scene">Scene to be modified</param>
/// <param name="scene">Matrix for instancing</param>
/// <returns>Number of faces read</returns>
public int ReadBrep( StreamReader reader, SceneBrep scene, Matrix4 m )
{
if ( reader == null ) return SceneBrep.NULL;
Debug.Assert( scene != null );
int v0 = scene.Vertices;
int faces = 0;
List<Vector3> normals = new List<Vector3>( 256 );
int[] f = new int[ 3 ];
do
{
string line = reader.ReadLine();
if ( line == null ) break;
int commentPos = line.IndexOf( COMMENT );
if ( commentPos >= 0 )
line = line.Substring( 0, commentPos );
string[] tokens = line.Split( ' ' );
switch ( tokens[ 0 ] )
{
case VERTEX:
if ( tokens.Length < 4 ) continue;
Vector3 coord;
if ( !float.TryParse( tokens[ 1 ], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.X ) ||
!float.TryParse( tokens[ 2 ], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.Y ) ||
!float.TryParse( tokens[ 3 ], NumberStyles.Float, CultureInfo.InvariantCulture, out coord.Z ) )
continue;
if ( MirrorConversion )
coord.Z = -coord.Z;
scene.AddVertex( Vector3.Transform( coord, m ) );
break;
case VERTEX_NORMAL:
if ( tokens.Length < 4 ) continue;
Vector3 norm;
if ( !float.TryParse( tokens[ 1 ], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.X ) ||
!float.TryParse( tokens[ 2 ], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.Y ) ||
!float.TryParse( tokens[ 3 ], NumberStyles.Float, CultureInfo.InvariantCulture, out norm.Z ) )
continue;
if ( MirrorConversion )
norm.Z = -norm.Z;
normals.Add( Vector3.TransformNormal( norm, m ) );
break;
case FACE:
if ( tokens.Length < 4 ) continue;
int i;
for ( i = 0; i < 3; i++ )
{
string[] vt = tokens[ i + 1 ].Split( '/' );
int ti, ni;
ti = ni = SceneBrep.NULL;
// 0 .. vertex coord index
if ( !int.TryParse( vt[ 0 ], out f[ i ] ) ) break;
f[ i ] = v0 + f[ i ] - 1;
if ( vt.Length >= 2 )
{
// 1 .. texture coord index (not yet)
int.TryParse( vt[ 1 ], out ti );
ti--;
if ( vt.Length >= 3 )
{
// 2 .. normal vector index
int.TryParse( vt[ 2 ], out ni );
ni--;
}
}
if ( ni >= 0 && ni < normals.Count )
scene.SetNormal( f[ i ], normals[ ni ] );
}
if ( i >= 3 )
{
scene.AddTriangle( f[ 0 ], f[ 1 ], f[ 2 ] );
faces++;
}
break;
}
}
while ( !reader.EndOfStream );
return faces;
}
/// <summary>
/// Construct a new Brep solid (preferebaly closed = regular one).
/// </summary>
/// <param name="scene">B-rep scene to be modified</param>
/// <param name="m">Transform matrix (object-space to world-space)</param>
/// <param name="param">Shape parameters if needed</param>
/// <returns>Number of generated faces (0 in case of failure)</returns>
public int AddMesh(SceneBrep scene, Matrix4 m, string param)
{
parseParams(param);
int elements = 6 + (depth > 0 ? 8 * (int)Math.Pow(3, depth - 1) : 0) + (center ? 1 : 0);
scene.Reserve(elements);
int middle = scene.AddVertex(Vector3.TransformPosition(new Vector3(0, 0, 0), m));
GenerateBaseVertices();
GenerateSubVertices();
// Generate int positions
{
Queue <Vertex> currentVertices = new Queue <Vertex>(baseVertices);
while (currentVertices.Count > 0)
{
Vertex currentVertex = currentVertices.Dequeue();
currentVertex.Position = scene.AddVertex(Vector3.TransformPosition(currentVertex.Vector3, m));
for (int i = 0; i < currentVertex.SubVertices.Count; i++)
{
currentVertices.Enqueue(currentVertex.SubVertices[i]);
}
}
}
if (neighbors)
{
Queue <Vertex> currentVertices = new Queue <Vertex>(baseVertices);
while (currentVertices.Count > 0)
{
Vertex currentVertex = currentVertices.Dequeue();
for (int i = 0; i < currentVertex.Neighbors.Count; i++)
{
scene.AddLine(currentVertex.Position, currentVertex.Neighbors[i].Position);
}
for (int i = 0; i < currentVertex.SubVertices.Count; i++)
{
currentVertices.Enqueue(currentVertex.SubVertices[i]);
}
}
}
if (center)
{
Queue <Vertex> currentVertices = new Queue <Vertex>(baseVertices);
while (currentVertices.Count > 0)
{
Vertex currentVertex = currentVertices.Dequeue();
scene.AddLine(currentVertex.Position, middle);
for (int i = 0; i < currentVertex.SubVertices.Count; i++)
{
currentVertices.Enqueue(currentVertex.SubVertices[i]);
}
}
}
scene.LineWidth = 3.0f;
return(elements);
}