public StringBuilder drawSphereSlice(Scientrace.Object3d drawnObject3d, double lateral_circles, double meridians,
Scientrace.Sphere sphere, double from_radians, double to_radians,
Scientrace.UnitVector sliceAlongDirection)
{
System.Text.StringBuilder retx3d = new System.Text.StringBuilder(1024); //"<!-- DOUBLECONVEXLENS GRID start -->");
double pi2 = Math.PI * 2;
NonzeroVector orthoBaseVec1 = null;
NonzeroVector orthoBaseVec2 = null;
sliceAlongDirection.fillOrtogonalVectors(ref orthoBaseVec1, ref orthoBaseVec2);
for (double iSphereCircle = 2 * lateral_circles; iSphereCircle > 0; iSphereCircle--) // the rings/parallels along the sliceAlongDirection axis
{
double lateral_radians = (to_radians * (iSphereCircle / (2 * lateral_circles)));
double circle2DRadius = sphere.radius * Math.Sin(lateral_radians);
double circle2DDistance = sphere.radius * Math.Cos(lateral_radians);
retx3d.Append(this.drawCircle(sphere.loc + (sliceAlongDirection * circle2DDistance).toLocation(), circle2DRadius, sliceAlongDirection));
for (double iSphereMerid = 0.5; iSphereMerid < 2 * meridians; iSphereMerid++) // meridians connect the rings/circles on the spherical surface
{
Scientrace.Location tNodeLoc = sphere.getSphericalLoc(
orthoBaseVec1, orthoBaseVec2,
sliceAlongDirection,
to_radians * (iSphereCircle / (2 * lateral_circles)), // lat_angle = theta
pi2 * (iSphereMerid / (2 * meridians)) // mer_angle = phi
);
if (!tNodeLoc.isValid())
{
throw new NullReferenceException("Cannot calculate base gridpoint at @ " + drawnObject3d.tag);
}
Scientrace.Location tLatConnectLoc = sphere.getSphericalLoc(
orthoBaseVec1, orthoBaseVec2,
sliceAlongDirection,
to_radians * ((iSphereCircle - 1) / (2 * lateral_circles)), // lat_angle = theta
pi2 * ((iSphereMerid) / (2 * meridians)) // mer_angle = phi
);
if (!tLatConnectLoc.isValid())
{
throw new NullReferenceException("Cannot calculate lateral gridpoint at @ " + drawnObject3d.tag);
}
Scientrace.X3DGridPoint tGridPoint = new Scientrace.X3DGridPoint(0, tNodeLoc, null, tLatConnectLoc);
retx3d.AppendLine(tGridPoint.exportX3DnosphereRGB(this.primaryRGB));
}
} // end for iSphereCircle / iSphereMerid
return(retx3d);
}
public static string x3D_Sphere(Scientrace.Location aLoc, double radius, string sphere_colour, double sphere_colour_intensity)
{
if ((aLoc == null) || !aLoc.isValid())
{
throw new Exception("NULLS OR NANS DETECTED");
}
if (radius <= 0)
{
return(""); // no sphere with no radius
}
string transpstr = (sphere_colour_intensity < 1) ? " transparency='" + (1 - Math.Sqrt(sphere_colour_intensity)) + "'" : ""; /*Sqrt for visibility */
return(@"<!--X3DSphere -->
<Transform scale='" + radius + " " + radius + " " + radius + @"' translation='" + aLoc.trico() + @"'>
<Shape><Sphere />
<Appearance><Material emissiveColor='" + sphere_colour + @"'" + transpstr + @" /></Appearance>
</Shape></Transform><!-- End X3DSphere -->");
}