public static SCNGeometrySource Create(List <SCNVector4> colors)
{
SCNGeometrySource result = null;
unsafe
{
var bytes = new List <byte>();
var colorsArray = colors.ToArray();
for (int i = 0; i < colors.Count; i++)
{
fixed(SCNVector4 *point = &colorsArray[i])
{
var intPtr = new IntPtr(point);
var data = NSData.FromBytes(intPtr, (nuint)SCNVector4.SizeInBytes);
bytes.AddRange(data.ToList());
}
}
var colorData = NSData.FromArray(bytes.ToArray());
result = SCNGeometrySource.FromData(colorData,
SCNGeometrySourceSemantics.Color,
colors.Count,
true,
4,
sizeof(float),
0,
SCNVector4.SizeInBytes);
}
return(result);
}
public void SCNGeometrySource_BoneStringTests() // These were radar://17782603
{
Asserts.EnsureYosemite();
#pragma warning disable 0219
SCNGeometrySource d = SCNGeometrySource.FromData(new NSData(), SCNGeometrySourceSemantic.BoneWeights, 1, false, 1, 1, 1, 1);
d = SCNGeometrySource.FromData(new NSData(), SCNGeometrySourceSemantic.BoneIndices, 1, false, 1, 1, 1, 1);
#pragma warning restore 0219
}
public void SCNGeometrySource_FromDataTest()
{
Asserts.EnsureMountainLion();
#pragma warning disable 0219
SCNGeometrySource d = SCNGeometrySource.FromData(new NSData(), SCNGeometrySourceSemantic.Color, 1, false, 1, 1, 1, 1);
foreach (SCNGeometrySourceSemantics s in Enum.GetValues(typeof(SCNGeometrySourceSemantics)))
{
if (!isValidEnumForPlatform(s))
{
continue;
}
d = SCNGeometrySource.FromData(new NSData(), s, 1, false, 1, 1, 1, 1);
}
#pragma warning restore 0219
}
internal static SCNGeometry CreateVisualization(NVector3[] points, UIColor color, float size)
{
if (points.Length == 0)
{
return(null);
}
unsafe
{
var stride = sizeof(float) * 3;
// Pin the data down so that it doesn't move
fixed(NVector3 *pPoints = &points[0])
{
// Grab a pointer to the data and treat it as a byte buffer of the appropriate length
var intPtr = new IntPtr(pPoints);
var pointData = NSData.FromBytes(intPtr, (System.nuint)(stride * points.Length));
// Create a geometry source (factory) configured properly for the data (3 vertices)
var source = SCNGeometrySource.FromData(
pointData,
SCNGeometrySourceSemantics.Vertex,
points.Length,
true,
3,
sizeof(float),
0,
stride
);
// Don't unpin yet, because geometry creation is lazy
// Create geometry element
// The null and bytesPerElement = 0 look odd, but this is just a template object
var element = SCNGeometryElement.FromData(null, SCNGeometryPrimitiveType.Point, points.Length, 0);
element.PointSize = 0.001F;
element.MinimumPointScreenSpaceRadius = size;
element.MaximumPointScreenSpaceRadius = size;
// Stitch the data (source) together with the template (element) to create the new object
var pointsGeometry = SCNGeometry.Create(new[] { source }, new[] { element });
pointsGeometry.Materials = new[] { Utilities.Material(color) };
return(pointsGeometry);
}
}
}
