internal void ValidateJoints(Validation.ValidationContext result, int jwset, int jointsCount)
{
var jj = this.AsVector4Array();
void _CheckJoint(Validation.ValidationContext r, float v, int idx, string n)
{
if (!v._IsReal())
{
result.AddError(this, $"JOINTS_{jwset}[{idx}].{n} value {v} is not finite");
}
if ((v % 1) != 0)
{
result.AddError(this, $"JOINTS_{jwset}[{idx}].{n} value {v} should be a round value");
}
if (v < 0 || v >= jointsCount)
{
result.AddError(this, $"JOINTS_{jwset}[{idx}].{n} value {v} is out of range 0-{jointsCount}");
}
}
for (int i = 0; i < jj.Count; ++i)
{
var jjjj = jj[i];
_CheckJoint(result, jjjj.X, i, "X");
_CheckJoint(result, jjjj.Y, i, "Y");
_CheckJoint(result, jjjj.Z, i, "Z");
_CheckJoint(result, jjjj.W, i, "W");
}
}
internal void ValidateWeights(Validation.ValidationContext result, int jwset)
{
var ww = this.AsVector4Array();
void _CheckWeight(Validation.ValidationContext r, float v, int idx, string n)
{
if (!v._IsReal())
{
result.AddError(this, $"WEIGHTS_{jwset}[{idx}].{n} value {v} is not finite");
}
if (v < 0 || v > 1)
{
result.AddError(this, $"WEIGHTS_{jwset}[{idx}].{n} value {v} is out of range 0-1");
}
}
for (int i = 0; i < ww.Count; ++i)
{
var wwww = ww[i];
_CheckWeight(result, wwww.X, i, "X");
_CheckWeight(result, wwww.Y, i, "Y");
_CheckWeight(result, wwww.Z, i, "Z");
_CheckWeight(result, wwww.W, i, "W");
// theoretically, the sum of all the weights should give 1, ASSUMING there's only one weight set.
// but in practice, that seems not to be true.
}
}
internal void ValidateBounds(Validation.ValidationContext result)
{
if (_min.Count == 0 && _max.Count == 0)
{
return;
}
var dimensions = this.Dimensions.DimCount();
if (_min.Count != dimensions)
{
result.AddError(this, $"min bounds length mismatch; expected {dimensions} but found {_min.Count}"); return;
}
if (_max.Count != dimensions)
{
result.AddError(this, $"max bounds length mismatch; expected {dimensions} but found {_max.Count}"); return;
}
for (int i = 0; i < _min.Count; ++i)
{
if (_min[i] > _max[i])
{
result.AddError(this, $"min[{i}] is larger than max[{i}]");
}
}
if (this.Encoding != EncodingType.FLOAT)
{
return;
}
var current = new float[dimensions];
var minimum = this._min.ConvertAll(item => (float)item);
var maximum = this._max.ConvertAll(item => (float)item);
var array = new MultiArray(this.SourceBufferView.Content, this.ByteOffset, this.Count, this.SourceBufferView.ByteStride, dimensions, this.Encoding, false);
for (int i = 0; i < array.Count; ++i)
{
array.CopyItemTo(i, current);
for (int j = 0; j < current.Length; ++j)
{
var v = current[j];
if (!v._IsReal())
{
result.AddError(this, $"Item[{j}][{i}] is not a finite number: {v}");
}
var min = minimum[j];
var max = maximum[j];
if (v < min || v > max)
{
result.AddError(this, $"Item[{j}][{i}] is out of bounds. {min} <= {v} <= {max}");
}
}
}
}
internal void ValidateTangents(Validation.ValidationContext result)
{
var tangents = this.AsVector4Array();
for (int i = 0; i < tangents.Count; ++i)
{
var tgt = tangents[i];
if (!tgt._IsReal())
{
result.AddError(this, $"TANGENT[{i}] value {tgt} has non finite values");
}
var len = new Vector3(tgt.X, tgt.Y, tgt.Z).Length();
if (len < 0.99f || len > 1.01f)
{
result.AddError(this, $"TANGENT[{i}] length {len} is not unit length");
}
if (tgt.W != 1 && tgt.W != -1)
{
result.AddError(this, $"TANGENT[{i}].W {tgt.W} has invalid value");
}
}
}
internal override void Validate(Validation.ValidationContext result)
{
base.Validate(result);
// check out of range indices
foreach (var idx in this._nodes)
{
if (idx < 0 || idx >= this.LogicalParent.LogicalNodes.Count)
{
result.AddError(this, $"references invalid Node[{idx}]");
}
}
// check duplicated indices
if (this._nodes.Distinct().Count() != this._nodes.Count)
{
result.AddError(this, "has duplicated node references");
}
}
internal void ValidateNormals(Validation.ValidationContext result)
{
var normals = this.AsVector3Array();
for (int i = 0; i < normals.Count; ++i)
{
var nrm = normals[i];
if (!nrm.IsValidNormal())
{
result.AddError(this, $"NORMAL[{i}] value {nrm} is invalid");
}
}
}
internal void ValidatePositions(Validation.ValidationContext result)
{
var positions = this.AsVector3Array();
for (int i = 0; i < positions.Count; ++i)
{
var pos = positions[i];
if (!pos._IsReal())
{
result.AddError(this, $"POSITION[{i}] value {pos} has non finite values");
}
}
}
internal override void Validate(Validation.ValidationContext result)
{
base.Validate(result);
if (!_bufferView.HasValue)
{
result.AddError(this, $"BufferView index missing"); return;
}
if (_bufferView < 0 || _bufferView >= LogicalParent.LogicalBufferViews.Count)
{
result.AddError(this, $"BufferView index out of range");
}
if (_count < _countMinimum)
{
result.AddError(this, $"Count is out of range");
}
if (_byteOffset < 0)
{
result.AddError(this, $"ByteOffset is out of range");
}
if (SourceBufferView.DeviceBufferTarget == BufferMode.ARRAY_BUFFER)
{
var len = Encoding.ByteLength() * Dimensions.DimCount();
if (len > 0 && (len & 3) != 0)
{
result.AddError(this, $"Expected length to be multiple of 4, found {len}");
}
}
if (SourceBufferView.DeviceBufferTarget == BufferMode.ELEMENT_ARRAY_BUFFER)
{
var len = Encoding.ByteLength() * Dimensions.DimCount();
if (len != 1 && len != 2 && len != 4)
{
result.AddError(this, $"Expected length to be 1, 2 or 4, found {len}");
}
}
}
internal void ValidateIndices(Validation.ValidationContext result, uint vertexCount, PrimitiveType drawingType)
{
switch (drawingType)
{
case PrimitiveType.LINE_LOOP:
case PrimitiveType.LINE_STRIP:
if (this.Count < 2)
{
result.AddError(this, $"Indices count {this.Count} is less than 2");
}
break;
case PrimitiveType.TRIANGLE_FAN:
case PrimitiveType.TRIANGLE_STRIP:
if (this.Count < 3)
{
result.AddError(this, $"Indices count {this.Count} is less than 3");
}
break;
case PrimitiveType.LINES:
if (!this.Count.IsMultipleOf(2))
{
result.AddError(this, $"Indices count {this.Count} incompatible with Primitive.{drawingType}");
}
break;
case PrimitiveType.TRIANGLES:
if (!this.Count.IsMultipleOf(3))
{
result.AddError(this, $"Indices count {this.Count} incompatible with Primitive.{drawingType}");
}
break;
}
uint restart_value = 0xff;
if (this.Encoding == EncodingType.UNSIGNED_SHORT)
{
restart_value = 0xffff;
}
if (this.Encoding == EncodingType.UNSIGNED_INT)
{
restart_value = 0xffffffff;
}
var indices = this.AsIndicesArray();
for (int i = 0; i < indices.Count; ++i)
{
var idx = indices[i];
if (idx == restart_value)
{
result.AddError(this, $"Index[{i}] value {idx} is invalid PRIMITIVE RESTART value");
}
else if (idx >= vertexCount)
{
result.AddError(this, $"Index[{i}] value {idx} is out of range {0}-{vertexCount}");
}
}
}