private void createSplineToolStripMenuItem_Click(object sender, EventArgs e)
{
if (Spline_points.Count < 4)
{
return;
}
for (int i = 0; i < Spline_points.Count; i++)
{
float a0_x =
(Spline_points[i % Spline_points.Count].X
+ 4 * Spline_points[(i + 1) % Spline_points.Count].X
+ Spline_points[(i + 2) % Spline_points.Count].X) / 6;
float a1_x =
(-Spline_points[i % Spline_points.Count].X
+ Spline_points[(i + 2) % Spline_points.Count].X) / 2;
float a2_x =
(Spline_points[i % Spline_points.Count].X
- 2 * Spline_points[(i + 1) % Spline_points.Count].X
+ Spline_points[(i + 2) % Spline_points.Count].X) / 2;
float a3_x =
(-Spline_points[i % Spline_points.Count].X
+ 3 * Spline_points[(i + 1) % Spline_points.Count].X
- 3 * Spline_points[(i + 2) % Spline_points.Count].X
+ Spline_points[(i + 3) % Spline_points.Count].X) / 6;
float a0_y =
(Spline_points[i % Spline_points.Count].Y
+ 4 * Spline_points[(i + 1) % Spline_points.Count].Y
+ Spline_points[(i + 2) % Spline_points.Count].Y) / 6;
float a1_y =
(-Spline_points[i % Spline_points.Count].Y
+ Spline_points[(i + 2) % Spline_points.Count].Y) / 2;
float a2_y =
(Spline_points[i % Spline_points.Count].Y
- 2 * Spline_points[(i + 1) % Spline_points.Count].Y
+ Spline_points[(i + 2) % Spline_points.Count].Y) / 2;
float a3_y =
(-Spline_points[i % Spline_points.Count].Y
+ 3 * Spline_points[(i + 1) % Spline_points.Count].Y
- 3 * Spline_points[(i + 2) % Spline_points.Count].Y
+ Spline_points[(i + 3) % Spline_points.Count].Y) / 6;
float a0_z =
(Spline_points[i % Spline_points.Count].Z
+ 4 * Spline_points[(i + 1) % Spline_points.Count].Z
+ Spline_points[(i + 2) % Spline_points.Count].Z) / 6;
float a1_z =
(-Spline_points[i % Spline_points.Count].Z
+ Spline_points[(i + 2) % Spline_points.Count].Z) / 2;
float a2_z =
(Spline_points[i % Spline_points.Count].Z
- 2 * Spline_points[(i + 1) % Spline_points.Count].Z
+ Spline_points[(i + 2) % Spline_points.Count].Z) / 2;
float a3_z =
(-Spline_points[i % Spline_points.Count].Z
+ 3 * Spline_points[(i + 1) % Spline_points.Count].Z
- 3 * Spline_points[(i + 2) % Spline_points.Count].Z
+ Spline_points[(i + 3) % Spline_points.Count].Z) / 6;
for (float t = 0; t < 1; t += spline_step)
{
GR_Point p = new GR_Point(
((a3_x * t + a2_x) * t + a1_x) * t + a0_x,
((a3_y * t + a2_y) * t + a1_y) * t + a0_y,
((a3_z * t + a2_z) * t + a1_z) * t + a0_z,
2,
Color.Black
);
mainScene.AddPoint_with_relative_coords(p);
}
}
}
