private void DrawThreePlanes(Canvas3D Canvas, I3DShader Shader, float x, float y, float z)
{
Canvas.Polygon(new Vector4[]
{
new Vector4(-500, 500, z, 1),
new Vector4(500, 500, z, 1),
new Vector4(500, -500, z, 1),
new Vector4(-500, -500, z, 1)
}, Shader, true);
Canvas.Polygon(new Vector4[]
{
new Vector4(x, 500, 1000, 1),
new Vector4(x, 500, 2000, 1),
new Vector4(x, -500, 2000, 1),
new Vector4(x, -500, 1000, 1)
}, Shader, true);
Canvas.Polygon(new Vector4[]
{
new Vector4(-500, y, 2000, 1),
new Vector4(500, y, 2000, 1),
new Vector4(500, y, 1000, 1),
new Vector4(-500, y, 1000, 1)
}, Shader, true);
}
/// <summary>
/// Draws the graph on a canvas.
/// </summary>
/// <param name="Canvas">Canvas to draw on.</param>
/// <param name="Points">Points to draw.</param>
/// <param name="Normals">Optional normals.</param>
/// <param name="Parameters">Graph-specific parameters.</param>
/// <param name="PrevPoints">Points of previous graph of same type (if available), null (if not available).</param>
/// <param name="PrevNormals">Optional normals of previous graph of same type (if available), null (if not available).</param>
/// <param name="PrevParameters">Parameters of previous graph of same type (if available), null (if not available).</param>
/// <param name="DrawingVolume">Current drawing volume.</param>
public void DrawGraph(Graphs3D.Canvas3D Canvas, Vector4[,] Points, Vector4[,] Normals,
object[] Parameters, Vector4[,] PrevPoints, Vector4[,] PrevNormals,
object[] PrevParameters, DrawingVolume DrawingVolume)
{
int i, c = Points.GetLength(0);
int j, d = Points.GetLength(1);
I3DShader Shader = Graph3D.ToShader(Parameters[0]);
bool TwoSided = Expression.ToDouble(Parameters[1]) != 0;
Vector4[] Nodes = new Vector4[4];
c--;
d--;
for (i = 0; i < c; i++)
{
for (j = 0; j < d; j++)
{
Nodes[0] = Points[i, j];
Nodes[1] = Points[i + 1, j];
Nodes[2] = Points[i + 1, j + 1];
Nodes[3] = Points[i, j + 1];
Canvas.Polygon(Nodes, Shader, TwoSided);
}
}
}
public void Canvas3D_Test_10_PhongShading_Oversampling_3()
{
I3DShader Shader = this.GetPhongShader(SKColors.Red);
Canvas3D Canvas = new Canvas3D(1200, 800, 3, SKColors.White);
Canvas.Perspective(200, 2000);
this.DrawThreePlanes(Canvas, Shader);
this.Save(Canvas, "10.png");
}
public void Canvas3D_Test_14_Ellipsoid()
{
Canvas3D Canvas = new Canvas3D(1200, 800, 1, SKColors.White);
Canvas.Perspective(200, 2000);
//Canvas.LookAt(-200, 500, 0, 0, 0, 1500, 0, 1, 0);
Canvas.RotateX(30, new Vector3(0, 0, 1500));
Canvas.RotateY(45, new Vector3(0, 0, 1500));
Canvas.RotateZ(60, new Vector3(0, 0, 1500));
I3DShader Shader = this.GetPhongShader(SKColors.Orange);
Canvas.Ellipsoid(0, 0, 1500, 400, 400, 400, 1000, Shader);
Shader = this.GetPhongShader(new SKColor(0, 0, 255, 64));
this.DrawThreePlanes(Canvas, Shader, 0, 0, 1500);
this.Save(Canvas, "14.png");
}
public void Canvas3D_Test_13_Rotate_Z()
{
I3DShader Shader = this.GetPhongShader(SKColors.Red);
Canvas3D Canvas = new Canvas3D(1200, 800, 1, SKColors.White);
Canvas.Perspective(200, 2000);
this.DrawThreePlanes(Canvas, Shader);
Shader = this.GetPhongShader(SKColors.Blue);
Matrix4x4 Bak = Canvas.Translate(-250, 250, 0);
Canvas.Scale(0.25f, new Vector3(0, 0, 1500));
Canvas.RotateZ(30, new Vector3(0, 0, 1500));
Canvas.Box(-500, -500, 1000, 500, 500, 2000, Shader);
Canvas.ModelTransformation = Bak;
Canvas.Translate(250, 250, 0);
Canvas.Scale(0.25f, new Vector3(0, 0, 1500));
Canvas.RotateZ(120, new Vector3(0, 0, 1500));
Canvas.Box(-500, -500, 1000, 500, 500, 2000, Shader);
Canvas.ModelTransformation = Bak;
Canvas.Translate(-250, -250, 0);
Canvas.Scale(0.25f, new Vector3(0, 0, 1500));
Canvas.RotateZ(210, new Vector3(0, 0, 1500));
Canvas.Box(-500, -500, 1000, 500, 500, 2000, Shader);
Canvas.ModelTransformation = Bak;
Canvas.Translate(250, -250, 0);
Canvas.Scale(0.25f, new Vector3(0, 0, 1500));
Canvas.RotateZ(500, new Vector3(0, 0, 1500));
Canvas.Box(-500, -500, 1000, 500, 500, 2000, Shader);
this.Save(Canvas, "13.png");
}
/// <summary>
/// Draws the graph on a canvas.
/// </summary>
/// <param name="Canvas">Canvas to draw on.</param>
/// <param name="Points">Points to draw.</param>
/// <param name="Normals">Optional normals.</param>
/// <param name="Parameters">Graph-specific parameters.</param>
/// <param name="PrevPoints">Points of previous graph of same type (if available), null (if not available).</param>
/// <param name="PrevNormals">Optional normals of previous graph of same type (if available), null (if not available).</param>
/// <param name="PrevParameters">Parameters of previous graph of same type (if available), null (if not available).</param>
/// <param name="DrawingVolume">Current drawing volume.</param>
public void DrawGraph(Graphs3D.Canvas3D Canvas, Vector4[,] Points, Vector4[,] Normals,
object[] Parameters, Vector4[,] PrevPoints, Vector4[,] PrevNormals,
object[] PrevParameters, DrawingVolume DrawingVolume)
{
int i, c = Points.GetLength(0);
int j, d = Points.GetLength(1);
I3DShader Shader = Graph3D.ToShader(Parameters[0]);
Vector3 P1, P2;
float dx, dz;
int i0, j0;
double[] v = DrawingVolume.ScaleY(new DoubleVector(0));
float OrigoY = (float)v[0];
for (i = 0; i < c; i++)
{
i0 = i == 0 ? i : i - 1;
for (j = 0; j < d; j++)
{
j0 = j == 0 ? j : j - 1;
P1 = Graphs3D.Canvas3D.ToVector3(Points[i0, j0]);
P2 = Graphs3D.Canvas3D.ToVector3(Points[i0 + 1, j0 + 1]);
dx = P2.X - P1.X;
dz = P2.Z - P1.Z;
P1 = Graphs3D.Canvas3D.ToVector3(Points[i, j]);
dx /= 2;
dz /= 2;
Canvas.Box(P1.X - dx, OrigoY, P1.Z - dz, P1.X + dx, P1.Y, P1.Z + dz, Shader);
}
}
}
/// <summary>
/// Draws the graph on a canvas.
/// </summary>
/// <param name="Canvas">Canvas to draw on.</param>
/// <param name="Points">Points to draw.</param>
/// <param name="Normals">Optional normals.</param>
/// <param name="Parameters">Graph-specific parameters.</param>
/// <param name="PrevPoints">Points of previous graph of same type (if available), null (if not available).</param>
/// <param name="PrevNormals">Optional normals of previous graph of same type (if available), null (if not available).</param>
/// <param name="PrevParameters">Parameters of previous graph of same type (if available), null (if not available).</param>
/// <param name="DrawingVolume">Current drawing volume.</param>
public void DrawGraph(Graphs3D.Canvas3D Canvas, Vector4[,] Points, Vector4[,] Normals,
object[] Parameters, Vector4[,] PrevPoints, Vector4[,] PrevNormals,
object[] PrevParameters, DrawingVolume DrawingVolume)
{
int i, c = Points.GetLength(0);
int j, d = Points.GetLength(1);
I3DShader Shader = Graph3D.ToShader(Parameters[0]);
bool TwoSided = Expression.ToDouble(Parameters[1]) != 0;
Vector4[] Nodes = new Vector4[4];
Vector4[] NodeNormals = new Vector4[4];
c--;
d--;
if (Normals is null)
{
Vector4[,] N = new Vector4[c + 1, d + 1];
Vector4 P1, P2, P3;
int n;
for (i = 0; i < c; i++)
{
for (j = 0; j < d; j++)
{
P1 = Points[i, j];
P2 = Points[i + 1, j];
if (P1 == P2)
{
P2 = Points[i + 1, j + 1];
}
P3 = Points[i, j + 1];
if (P1 == P3)
{
P3 = Points[i + 1, j + 1];
}
N[i, j] = Graphs3D.Canvas3D.CalcNormal(P1, P2, P3);
}
if (Vector4.Distance(Points[i, d], Points[i, 0]) < 1e-10f)
{
N[i, d] = N[i, 0];
}
else
{
N[i, d] = N[i, d - 1];
}
}
for (j = 0; j <= d; j++)
{
if (Vector4.Distance(Points[c, j], Points[0, j]) < 1e-10f)
{
N[c, j] = N[0, j];
}
else
{
N[c, j] = N[c - 1, j];
}
}
Normals = new Vector4[c + 1, d + 1];
for (i = 0; i <= c; i++)
{
for (j = 0; j <= d; j++)
{
P1 = N[i, j];
n = 1;
if (i > 0)
{
P1 += N[i - 1, j];
n++;
if (j > 0)
{
P1 += N[i - 1, j - 1];
n++;
}
}
if (j > 0)
{
P1 += N[i, j - 1];
n++;
}
Normals[i, j] = P1 / n;
}
}
}
for (i = 0; i < c; i++)
{
for (j = 0; j < d; j++)
{
Nodes[0] = Points[i, j];
Nodes[1] = Points[i + 1, j];
Nodes[2] = Points[i + 1, j + 1];
Nodes[3] = Points[i, j + 1];
NodeNormals[0] = Normals[i, j];
NodeNormals[1] = Normals[i + 1, j];
NodeNormals[2] = Normals[i + 1, j + 1];
NodeNormals[3] = Normals[i, j + 1];
Canvas.Polygon(Nodes, NodeNormals, Shader, TwoSided);
}
}
}
private void DrawThreePlanes(Canvas3D Canvas, I3DShader Shader)
{
this.DrawThreePlanes(Canvas, Shader, -500, -500, 2000);
}
