public void GetTrianglesIntersectingSphere(ref BoundingSphere sphere, Vector3?referenceNormalVector, float?maxAngle, List <MyTriangle_Vertex_Normals> retTriangles, int maxNeighbourTriangles)
{
var aabb = BoundingBoxHelper.InitialBox;
BoundingBoxHelper.AddSphere(ref sphere, ref aabb);
AABB gi_aabb = new AABB(ref aabb.Min, ref aabb.Max);
m_overlappedTriangles.Clear();
if (m_bvh.BoxQuery(ref gi_aabb, m_overlappedTriangles))
{
// temporary variable for storing tirngle boundingbox info
BoundingBox triangleBoundingBox = new BoundingBox();
for (int i = 0; i < m_overlappedTriangles.Count; i++)
{
var triangleIndex = m_overlappedTriangles[i];
// If we reached end of the buffer of neighbour triangles, we stop adding new ones. This is better behavior than throwing exception because of array overflow.
if (retTriangles.Count == maxNeighbourTriangles)
{
return;
}
m_model.GetTriangleBoundingBox(triangleIndex, ref triangleBoundingBox);
// First test intersection of triangleVertexes's bounding box with bounding sphere. And only if they overlap or intersect, do further intersection tests.
if (MyUtils.IsBoxIntersectingSphere(triangleBoundingBox, ref sphere) == true)
{
//if (m_triangleIndices[value] != ignoreTriangleWithIndex)
{
// See that we swaped vertex indices!!
MyTriangle_Vertexes triangle;
MyTriangle_Normals triangleNormals;
MyTriangle_Normals triangleBinormals;
MyTriangle_Normals triangleTangents;
MyTriangleVertexIndices triangleIndices = m_model.Triangles[triangleIndex];
m_model.GetVertex(triangleIndices.I0, triangleIndices.I2, triangleIndices.I1, out triangle.Vertex0, out triangle.Vertex1, out triangle.Vertex2);
/*
* triangle.Vertex0 = m_model.GetVertex(triangleIndices.I0);
* triangle.Vertex1 = m_model.GetVertex(triangleIndices.I2);
* triangle.Vertex2 = m_model.GetVertex(triangleIndices.I1);
*/
triangleNormals.Normal0 = m_model.GetVertexNormal(triangleIndices.I0);
triangleNormals.Normal1 = m_model.GetVertexNormal(triangleIndices.I2);
triangleNormals.Normal2 = m_model.GetVertexNormal(triangleIndices.I1);
if (MinerWars.AppCode.Game.Render.MyRenderConstants.RenderQualityProfile.ForwardRender)
{
triangleBinormals.Normal0 = triangleNormals.Normal0;
triangleBinormals.Normal1 = triangleNormals.Normal1;
triangleBinormals.Normal2 = triangleNormals.Normal2;
triangleTangents.Normal0 = triangleNormals.Normal0;
triangleTangents.Normal1 = triangleNormals.Normal1;
triangleTangents.Normal2 = triangleNormals.Normal2;
}
else
{
triangleBinormals.Normal0 = m_model.GetVertexBinormal(triangleIndices.I0);
triangleBinormals.Normal1 = m_model.GetVertexBinormal(triangleIndices.I2);
triangleBinormals.Normal2 = m_model.GetVertexBinormal(triangleIndices.I1);
triangleTangents.Normal0 = m_model.GetVertexTangent(triangleIndices.I0);
triangleTangents.Normal1 = m_model.GetVertexTangent(triangleIndices.I2);
triangleTangents.Normal2 = m_model.GetVertexTangent(triangleIndices.I1);
}
MyPlane trianglePlane = new MyPlane(ref triangle);
if (MyUtils.GetSphereTriangleIntersection(ref sphere, ref trianglePlane, ref triangle) != null)
{
Vector3 triangleNormal = MyUtils.GetNormalVectorFromTriangle(ref triangle);
if ((referenceNormalVector.HasValue == false) || (maxAngle.HasValue == false) ||
((MyUtils.GetAngleBetweenVectors(referenceNormalVector.Value, triangleNormal) <= maxAngle)))
{
MyTriangle_Vertex_Normals retTriangle;
retTriangle.Vertexes = triangle;
retTriangle.Normals = triangleNormals;
retTriangle.Binormals = triangleBinormals;
retTriangle.Tangents = triangleTangents;
retTriangles.Add(retTriangle);
}
}
}
}
}
}
}
public void GetTrianglesIntersectingSphere(ref BoundingSphereD sphere, Vector3?referenceNormalVector, float?maxAngle, List <MyTriangle_Vertex_Normals> retTriangles, int maxNeighbourTriangles)
{
var aabb = BoundingBox.CreateInvalid();
BoundingSphere sphereF = (BoundingSphere)sphere;
aabb.Include(ref sphereF);
AABB gi_aabb = new AABB(aabb.Min.ToBullet(), aabb.Max.ToBullet());
m_overlappedTriangles.Clear();
if (m_bvh.BoxQuery(ref gi_aabb, m_overlappedTriangles))
{
// temporary variable for storing tirngle boundingbox info
BoundingBox triangleBoundingBox = new BoundingBox();
for (int i = 0; i < m_overlappedTriangles.Count; i++)
{
var triangleIndex = m_overlappedTriangles[i];
// If we reached end of the buffer of neighbour triangles, we stop adding new ones. This is better behavior than throwing exception because of array overflow.
if (retTriangles.Count == maxNeighbourTriangles)
{
return;
}
m_model.GetTriangleBoundingBox(triangleIndex, ref triangleBoundingBox);
// First test intersection of triangleVertexes's bounding box with bounding sphere. And only if they overlap or intersect, do further intersection tests.
if (triangleBoundingBox.Intersects(ref sphere))
{
//if (m_triangleIndices[value] != ignoreTriangleWithIndex)
{
// See that we swaped vertex indices!!
MyTriangle_Vertexes triangle;
MyTriangle_Normals triangleNormals;
//MyTriangle_Normals triangleTangents;
MyTriangleVertexIndices triangleIndices = m_model.Triangles[triangleIndex];
m_model.GetVertex(triangleIndices.I0, triangleIndices.I2, triangleIndices.I1, out triangle.Vertex0, out triangle.Vertex1, out triangle.Vertex2);
/*
* triangle.Vertex0 = m_model.GetVertex(triangleIndices.I0);
* triangle.Vertex1 = m_model.GetVertex(triangleIndices.I2);
* triangle.Vertex2 = m_model.GetVertex(triangleIndices.I1);
*/
triangleNormals.Normal0 = m_model.GetVertexNormal(triangleIndices.I0);
triangleNormals.Normal1 = m_model.GetVertexNormal(triangleIndices.I2);
triangleNormals.Normal2 = m_model.GetVertexNormal(triangleIndices.I1);
PlaneD trianglePlane = new PlaneD(triangle.Vertex0, triangle.Vertex1, triangle.Vertex2);
if (MyUtils.GetSphereTriangleIntersection(ref sphere, ref trianglePlane, ref triangle) != null)
{
Vector3 triangleNormal = MyUtils.GetNormalVectorFromTriangle(ref triangle);
if ((referenceNormalVector.HasValue == false) || (maxAngle.HasValue == false) ||
((MyUtils.GetAngleBetweenVectors(referenceNormalVector.Value, triangleNormal) <= maxAngle)))
{
MyTriangle_Vertex_Normals retTriangle;
retTriangle.Vertices = triangle;
retTriangle.Normals = triangleNormals;
retTriangles.Add(retTriangle);
}
}
}
}
}
}
}
