private void createSurfaceVolume( GameObject node, float[] data, HAPI_VolumeTileInfo tile, HAPI_VolumeInfo volume )
{
// Create a particle with alpha = to the data format
const float particle_epsilon = 0.05f;
int particle_count = 0;
for ( int i = 0; i < data.Length; ++i )
if ( data[ i ] > -particle_epsilon && data[ i ] < particle_epsilon )
particle_count++;
MeshFilter mesh_filter = HoudiniControl.getOrCreateComponent< MeshFilter >( node );
MeshRenderer mesh_renderer = HoudiniControl.getOrCreateComponent< MeshRenderer >( node );
if ( !mesh_filter.sharedMesh )
mesh_filter.sharedMesh = new Mesh();
mesh_filter.sharedMesh.Clear();
if ( particle_count <= 0 )
return;
if ( !mesh_renderer.sharedMaterial )
mesh_renderer.sharedMaterial = new Material( Shader.Find( "Houdini/VolumeSurface" ) );
mesh_renderer.sharedMaterial.SetFloat( "_PointSize", 70.0f );
mesh_renderer.sharedMaterial.SetColor( "_Color", new Color( 1.0f, 0.9f, 0.9f ) );
Vector3[] vertices = new Vector3[ particle_count ];
Color[] colors = new Color[ particle_count ];
Vector3[] normals = new Vector3[ particle_count ];
Vector2[] uvs = new Vector2[ particle_count ];
// Create the selection indices.
int[] indices = new int[ vertices.Length ];
for ( int i = 0; i < vertices.Length; ++i )
indices[ i ] = i;
Vector3 tileMin = new Vector3( tile.minX, tile.minY, tile.minZ );
//float volume_scale = volume.transform.scale[ 0 ] * 2.0f;
int part_index = 0;
for ( int z = 0; z < volume.tileSize; ++z )
for ( int y = 0; y < volume.tileSize; ++y )
for ( int x = 0; x < volume.tileSize; ++x )
{
int index = z * volume.tileSize * volume.tileSize + y * volume.tileSize + x;
if ( data[ index ] > -particle_epsilon && data[ index ] < particle_epsilon
&& part_index < particle_count )
{
// Get particle position.
Vector3 pos = new Vector3( (float) x, (float) y, (float) z );
pos = 1.2f * ( ( pos + tileMin ) - new Vector3( 0.5f, 0.5f, 0.5f ) );
vertices[ part_index ] = node.transform.parent.TransformPoint( pos );
// Get particle normal.
int amount = 1;
int sample_count = 0;
Vector3 average_normal = Vector3.zero;
for ( int xi = -1; xi <= 1; ++xi )
for ( int yi = -1; yi <= 1; ++yi )
for ( int zi = -1; zi <= 1; ++zi )
{
if ( xi == 0 && yi == 0 && zi == 0 )
continue;
float result = getVolumeData( data, volume, particle_epsilon, x + xi * amount, y + yi * amount, z + zi * amount );
Vector3 normal = Vector3.zero;
if ( result < -0.5f )
normal = new Vector3( -xi, -yi, -zi );
else if ( result > 0.5f )
normal = new Vector3( xi, yi, zi );
else
continue;
average_normal += normal;
sample_count++;
}
average_normal /= sample_count;
average_normal.Normalize();
normals[ part_index ] = average_normal;
// Get particle color.
average_normal.x += 1.0f; average_normal.y += 1.0f; average_normal.z += 1.0f;
average_normal /= 2.0f;
colors[ part_index ] = new Color( average_normal.x, average_normal.y, average_normal.z, 1 );
part_index++;
}
}
mesh_filter.sharedMesh.vertices = vertices;
mesh_filter.sharedMesh.colors = colors;
mesh_filter.sharedMesh.normals = normals;
mesh_filter.sharedMesh.uv = uvs;
mesh_filter.sharedMesh.SetIndices( indices, MeshTopology.Points, 0 );
}
public void refresh(bool reload_asset, bool has_geo_changed, bool has_material_changed)
{
if (prGeoControl == null)
{
Debug.LogError("Why is my geo control null on a refresh?");
return;
}
GameObject part_node = gameObject;
// Get Part info.
HAPI_PartInfo part_info = new HAPI_PartInfo();
HoudiniHost.getPartInfo(prAssetId, prObjectId, prGeoId, prPartId, out part_info);
bool is_empty = part_info.vertexCount <= 0 && part_info.pointCount <= 0;
bool is_mesh = (part_info.vertexCount > 0);
// For Debugging.
#if false
Debug.Log("ATTRIBS");
HoudiniAssetUtility.printAllAttributeNames(prAssetId, prObjectId, prGeoId, prPartId);
Debug.Log("GROUPS");
HoudiniAssetUtility.printAllGroups(prAssetId, prObjectId, prGeoId, prPartId);
Debug.Log("DONE");
Debug.Log("");
#endif
// TODO: Make this info a permanent UI display.
//if ( prEnableLogging && ( reload_asset || has_geo_changed || has_material_changed ) )
// Debug.Log( "Obj #" + part_control.prObjectId + " (" + part_control.prObjectName + "): "
// + "verts: " + part_info.vertexCount + " faces: " + part_info.faceCount );
if (reload_asset || has_geo_changed)
{
// Initialize our part control.
init(-1, part_info.id, part_info.name);
// Overwrite name.
part_node.name = part_info.name;
if (is_empty)
{
// Add required components.
MeshFilter mesh_filter = getOrCreateComponent <MeshFilter>();
// Get or create mesh.
Mesh part_mesh = mesh_filter.sharedMesh;
if (part_mesh == null)
{
mesh_filter.mesh = new Mesh();
part_mesh = mesh_filter.sharedMesh;
}
part_mesh.Clear();
}
else if (is_mesh) // Valid mesh.
{
// Add required components.
MeshFilter mesh_filter = getOrCreateComponent <MeshFilter>();
// Get or create mesh.
Mesh part_mesh = mesh_filter.sharedMesh;
if (part_mesh == null)
{
mesh_filter.mesh = new Mesh();
part_mesh = mesh_filter.sharedMesh;
}
part_mesh.Clear();
// Get mesh.
try
{
HoudiniAssetUtility.getMesh(
this, part_mesh, prAsset.prGenerateTangents && HoudiniHost.prGenerateTangents);
}
catch (HoudiniErrorIgnorable) {}
catch (HoudiniError error)
{
Debug.LogWarning(error.ToString());
return;
}
// Add collider if group name matches. (Should be added after the mesh is set so that it
// picks up the mesh automagically)
if (part_info.name.Contains(HoudiniHost.prRenderedCollisionGroupName))
{
MeshCollider mesh_collider = getOrCreateComponent <MeshCollider>();
getOrCreateComponent <MeshRenderer>();
mesh_collider.enabled = false;
mesh_collider.enabled = true;
}
else if (part_info.name.Contains(HoudiniHost.prCollisionGroupName))
{
MeshCollider mesh_collider = getOrCreateComponent <MeshCollider>();
mesh_collider.enabled = false;
mesh_collider.enabled = true;
}
else
{
getOrCreateComponent <MeshRenderer>();
}
#if !HAPI_PAINT_SUPPORT
if (myGeoControl.prGeoType == HAPI_GeoType.HAPI_GEOTYPE_INTERMEDIATE)
{
MeshRenderer mesh_renderer = getOrCreateComponent <MeshRenderer>();
MeshCollider mesh_collider = getOrCreateComponent <MeshCollider>();
if (myGeoControl.prGeoAttributeManager)
{
myGeoControl.prGeoAttributeManager.reInit(
part_mesh, mesh_renderer, mesh_collider, transform);
}
mesh_collider.enabled = false;
mesh_collider.enabled = true;
}
#endif // !HAPI_PAINT_SUPPORT
// Add Mesh-to-Prefab component.
HoudiniMeshToPrefab mesh_saver = getOrCreateComponent <HoudiniMeshToPrefab>();
mesh_saver.prGameObject = part_node;
mesh_saver.prMeshName = prAsset.prAssetName + "_" + part_node.name;
}
else if (HoudiniHost.prEnablePointsAsParticles && part_info.vertexCount <= 0 && part_info.pointCount > 0) // Particles?
{
// Get position attributes.
HAPI_AttributeInfo pos_attr_info = new HAPI_AttributeInfo(HoudiniConstants.HAPI_ATTRIB_POSITION);
float[] pos_attr = new float[0];
HoudiniAssetUtility.getAttribute(
prAssetId, prObjectId, prGeoId, prPartId, HoudiniConstants.HAPI_ATTRIB_POSITION,
ref pos_attr_info, ref pos_attr, HoudiniHost.getAttributeFloatData);
if (!pos_attr_info.exists)
{
throw new HoudiniError("No position attribute found.");
}
else if (pos_attr_info.owner != HAPI_AttributeOwner.HAPI_ATTROWNER_POINT)
{
throw new HoudiniErrorIgnorable("I only understand position as point attributes!");
}
// Get colour attributes.
HAPI_AttributeInfo colour_attr_info = new HAPI_AttributeInfo(HoudiniConstants.HAPI_ATTRIB_COLOR);
float[] colour_attr = new float[0];
HoudiniAssetUtility.getAttribute(
prAssetId, prObjectId, prGeoId, prPartId, HoudiniConstants.HAPI_ATTRIB_COLOR,
ref colour_attr_info, ref colour_attr, HoudiniHost.getAttributeFloatData);
ParticleEmitter particle_emitter = part_node.GetComponent <ParticleEmitter>();
if (particle_emitter == null)
{
#if UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
particle_emitter = part_node.AddComponent("EllipsoidParticleEmitter") as ParticleEmitter;
#else
particle_emitter = part_node.AddComponent <EllipsoidParticleEmitter>() as ParticleEmitter;
#endif // UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
}
particle_emitter.ClearParticles();
particle_emitter.emit = false;
particle_emitter.useWorldSpace = true;
particle_emitter.maxSize = 0.06f;
particle_emitter.minSize = 0.02f;
ParticleRenderer renderer = getOrCreateComponent <ParticleRenderer>();
Material mat = new Material(Shader.Find("Particles/Additive (Soft)"));
int width = 20;
int length = 20;
Texture2D tex = new Texture2D(width, length, TextureFormat.RGBA32, false);
for (int x = 0; x < width; ++x)
{
for (int y = 0; y < length; ++y)
{
float dist = (x - 10) * (x - 10) + (y - 10) * (y - 10);
dist = Mathf.Sqrt(dist);
float alpha_f = 1.0f - dist / 10.0f;
Color col = new Color(0.8f, 0.8f, 0.8f, alpha_f);
tex.SetPixel(x, y, col);
}
}
tex.Apply();
mat.mainTexture = tex;
mat.color = new Color(1.0f, 1.0f, 0.5f);
renderer.material = mat;
particle_emitter.Emit(part_info.pointCount);
Particle[] particles = particle_emitter.particles;
if (particle_emitter.particles.Length < part_info.pointCount)
{
Debug.LogWarning("Geo has too many particles. Expected less than "
+ particle_emitter.particles.Length
+ " but found " + part_info.pointCount + ". "
+ " Only using the first "
+ particle_emitter.particles.Length + ".");
}
for (int i = 0; i < particle_emitter.particles.Length; ++i)
{
particles[i].position = new Vector3(pos_attr[i * 3 + 0],
pos_attr[i * 3 + 1],
pos_attr[i * 3 + 2]);
if (colour_attr_info.exists && colour_attr_info.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_POINT)
{
float alpha =
colour_attr_info.tupleSize == 4
? colour_attr[i * colour_attr_info.tupleSize + 3]
: 1.0f;
particles[i].color = new Color(colour_attr[i * colour_attr_info.tupleSize + 0],
colour_attr[i * colour_attr_info.tupleSize + 1],
colour_attr[i * colour_attr_info.tupleSize + 2],
alpha);
}
}
particle_emitter.particles = particles;
}
if (part_info.hasVolume)
{
// Clear previous volume tiles.
destroyChildren(part_node.transform);
// If we have a volume, retrieve the volume info
HAPI_VolumeInfo volume = new HAPI_VolumeInfo();
HoudiniHost.getVolumeInfo(prAssetId, prObjectId, prGeoId, prPartId, ref volume);
// The volume.transform.scale is the voxel size. Both the particle
// delta and the point size are affected by the voxel size.
HoudiniAssetUtility.applyTransform(volume.transform, part_node.transform);
float particle_delta = HoudiniConstants.HAPI_VOLUME_SURFACE_DELTA_MULT * Mathf.Max(Mathf.Max(
volume.transform.scale[0],
volume.transform.scale[1]),
volume.transform.scale[2]);
float point_size = HoudiniConstants.HAPI_VOLUME_SURFACE_PT_SIZE_MULT * particle_delta;
List <Vector3> acc_vertices = new List <Vector3>();
List <Vector3> acc_normals = new List <Vector3>();
float[] values = new float[volume.tileSize * volume.tileSize * volume.tileSize];
int tile_index = 0;
int current_container_particle_index = 0;
// Iterate through the voxels and print out the data, for now.
HAPI_VolumeTileInfo tile = new HAPI_VolumeTileInfo();
HoudiniHost.getFirstVolumeTile(prAssetId, prObjectId, prGeoId, prPartId, ref tile);
while (tile.isValid)
{
for (int i = 0; i < values.Length; ++i)
{
values[i] = 0;
}
HoudiniHost.getVolumeTileFloatData(
prAssetId, prObjectId, prGeoId, prPartId, ref tile, values);
Vector3 tileMin = new Vector3(tile.minX, tile.minY, tile.minZ);
int part_index = 0;
for (int z = 0; z < volume.tileSize; ++z)
{
for (int y = 0; y < volume.tileSize; ++y)
{
for (int x = 0; x < volume.tileSize; ++x)
{
int index = z * volume.tileSize * volume.tileSize + y * volume.tileSize + x;
if (values[index] > -particle_delta && values[index] < particle_delta)
{
// Make sure we have enough room in our arrays.
if (current_container_particle_index
> HoudiniConstants.HAPI_VOLUME_SURFACE_MAX_PT_PER_C)
{
createVolumeTilesObject(
point_size, part_node.transform, acc_vertices, acc_normals);
current_container_particle_index = 0;
acc_vertices.Clear();
acc_normals.Clear();
}
// Get particle position.
Vector3 pos = new Vector3((float)x, (float)y, (float)z);
pos = HoudiniConstants.HAPI_VOLUME_POSITION_MULT * (pos + tileMin);
pos.x = -pos.x;
acc_vertices.Add(part_node.transform.TransformPoint(pos));
// Get particle normal.
int amount = 1;
int sample_count = 0;
Vector3 average_normal = Vector3.zero;
for (int xi = -1; xi <= 1; ++xi)
{
for (int yi = -1; yi <= 1; ++yi)
{
for (int zi = -1; zi <= 1; ++zi)
{
if (xi == 0 && yi == 0 && zi == 0)
{
continue;
}
float result = getVolumeData(
values, volume, particle_delta, x + xi * amount, y + yi * amount, z + zi * amount);
Vector3 normal = Vector3.zero;
if (result < -0.5f)
{
normal = new Vector3(-xi, -yi, -zi);
}
else if (result > 0.5f)
{
normal = new Vector3(xi, yi, zi);
}
else
{
continue;
}
average_normal += normal;
sample_count++;
}
}
}
average_normal /= sample_count;
average_normal.Normalize();
acc_normals.Add(average_normal);
part_index++;
current_container_particle_index++;
}
}
}
}
HoudiniHost.getNextVolumeTile(prAssetId, prObjectId, prGeoId, prPartId, ref tile);
tile_index++;
} // tile iteration
// If we have left-over particles in our arrays we need another container.
createVolumeTilesObject(point_size, part_node.transform, acc_vertices, acc_normals);
} // if has volume
else // Restore part node if previously used to store volume.
{
// Clear previous volume tiles.
destroyChildren(part_node.transform);
part_node.transform.localScale = Vector3.one;
part_node.transform.localPosition = Vector3.zero;
part_node.transform.localRotation = Quaternion.identity;
}
}
// Refresh enabled flags.
if (gameObject.GetComponent <MeshCollider>())
{
gameObject.GetComponent <MeshCollider>().enabled =
prObjectVisible &&
(prAsset.prIsGeoVisible || prGeoType == HAPI_GeoType.HAPI_GEOTYPE_INTERMEDIATE);
}
if (gameObject.GetComponent <MeshRenderer>())
{
gameObject.GetComponent <MeshRenderer>().enabled =
prObjectVisible &&
(prAsset.prIsGeoVisible || prGeoType == HAPI_GeoType.HAPI_GEOTYPE_INTERMEDIATE);
}
// Assign materials.
HoudiniAssetUtility.assignMaterial(this, prAsset, (reload_asset || has_material_changed));
// Assign unity tag.
assignUnityTag();
}
public void refresh( bool reload_asset, bool has_geo_changed, bool has_material_changed )
{
if ( prGeoControl == null )
{
Debug.LogError( "Why is my geo control null on a refresh?" );
return;
}
GameObject part_node = gameObject;
// Get Part info.
HAPI_PartInfo part_info = new HAPI_PartInfo();
HoudiniHost.getPartInfo( prAssetId, prObjectId, prGeoId, prPartId, out part_info );
bool is_empty = part_info.vertexCount <= 0 && part_info.pointCount <= 0;
bool is_mesh = ( part_info.vertexCount > 0 );
// For Debugging.
#if false
Debug.Log( "ATTRIBS" );
HoudiniAssetUtility.printAllAttributeNames( prAssetId, prObjectId, prGeoId, prPartId );
Debug.Log( "GROUPS" );
HoudiniAssetUtility.printAllGroups( prAssetId, prObjectId, prGeoId, prPartId );
Debug.Log( "DONE" );
Debug.Log( "" );
#endif
// TODO: Make this info a permanent UI display.
//if ( prEnableLogging && ( reload_asset || has_geo_changed || has_material_changed ) )
// Debug.Log( "Obj #" + part_control.prObjectId + " (" + part_control.prObjectName + "): "
// + "verts: " + part_info.vertexCount + " faces: " + part_info.faceCount );
if ( reload_asset || has_geo_changed )
{
// Initialize our part control.
init( -1, part_info.id, part_info.name );
// Overwrite name.
part_node.name = part_info.name;
if ( is_empty )
{
// Add required components.
MeshFilter mesh_filter = getOrCreateComponent< MeshFilter >();
// Get or create mesh.
Mesh part_mesh = mesh_filter.sharedMesh;
if ( part_mesh == null )
{
mesh_filter.mesh = new Mesh();
part_mesh = mesh_filter.sharedMesh;
}
part_mesh.Clear();
}
else if ( is_mesh ) // Valid mesh.
{
// Add required components.
MeshFilter mesh_filter = getOrCreateComponent< MeshFilter >();
// Get or create mesh.
Mesh part_mesh = mesh_filter.sharedMesh;
if ( part_mesh == null )
{
mesh_filter.mesh = new Mesh();
part_mesh = mesh_filter.sharedMesh;
part_mesh.name = getAbsolutePath() + "/Mesh";
}
part_mesh.Clear();
// Get mesh.
try
{
HoudiniAssetUtility.getMesh(
this, part_mesh,
prAsset.prGenerateUVs,
prAsset.prGenerateLightmapUV2s,
prAsset.prGenerateTangents );
}
catch ( HoudiniErrorIgnorable ) {}
catch ( HoudiniError error )
{
Debug.LogWarning( error.ToString() );
return;
}
// Add collider if group name matches. (Should be added after the mesh is set so that it
// picks up the mesh automagically)
if ( part_info.name.Contains( HoudiniHost.prRenderedCollisionGroupName ) )
{
MeshCollider mesh_collider = getOrCreateComponent< MeshCollider >();
getOrCreateComponent< MeshRenderer >();
mesh_collider.enabled = false;
mesh_collider.enabled = true;
}
else if ( part_info.name.Contains( HoudiniHost.prCollisionGroupName ) )
{
MeshCollider mesh_collider = getOrCreateComponent< MeshCollider >();
mesh_collider.enabled = false;
mesh_collider.enabled = true;
}
else
{
getOrCreateComponent< MeshRenderer >();
}
if ( myGeoControl.prGeoType == HAPI_GeoType.HAPI_GEOTYPE_INTERMEDIATE )
{
MeshRenderer mesh_renderer = getOrCreateComponent< MeshRenderer >();
MeshCollider mesh_collider = getOrCreateComponent< MeshCollider >();
if ( myGeoControl.prGeoAttributeManager )
{
myGeoControl.prGeoAttributeManager.reInit(
part_mesh, mesh_renderer, mesh_collider, transform );
}
mesh_collider.enabled = false;
mesh_collider.enabled = true;
}
// Add Mesh-to-Prefab component.
HoudiniMeshToPrefab mesh_saver = getOrCreateComponent< HoudiniMeshToPrefab >();
mesh_saver.prGameObject = part_node;
mesh_saver.prMeshName = prAsset.prAssetName + "_" + part_node.name;
}
else if ( HoudiniHost.prEnablePointsAsParticles && part_info.vertexCount <= 0 && part_info.pointCount > 0 ) // Particles?
{
// Get position attributes.
HAPI_AttributeInfo pos_attr_info = new HAPI_AttributeInfo( HoudiniConstants.HAPI_ATTRIB_POSITION );
float[] pos_attr = new float[ 0 ];
HoudiniAssetUtility.getAttribute(
prAssetId, prObjectId, prGeoId, prPartId, HoudiniConstants.HAPI_ATTRIB_POSITION,
ref pos_attr_info, ref pos_attr, HoudiniHost.getAttributeFloatData );
if ( !pos_attr_info.exists )
throw new HoudiniError( "No position attribute found." );
else if ( pos_attr_info.owner != HAPI_AttributeOwner.HAPI_ATTROWNER_POINT )
throw new HoudiniErrorIgnorable( "I only understand position as point attributes!" );
// Get colour attributes.
HAPI_AttributeInfo colour_attr_info = new HAPI_AttributeInfo( HoudiniConstants.HAPI_ATTRIB_COLOR );
float[] colour_attr = new float[ 0 ];
HoudiniAssetUtility.getAttribute(
prAssetId, prObjectId, prGeoId, prPartId, HoudiniConstants.HAPI_ATTRIB_COLOR,
ref colour_attr_info, ref colour_attr, HoudiniHost.getAttributeFloatData );
ParticleEmitter particle_emitter = part_node.GetComponent< ParticleEmitter >();
if ( particle_emitter == null )
{
#if UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
particle_emitter = part_node.AddComponent( "EllipsoidParticleEmitter" ) as ParticleEmitter;
#else
particle_emitter = part_node.AddComponent< EllipsoidParticleEmitter >() as ParticleEmitter;
#endif // UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
}
particle_emitter.ClearParticles();
particle_emitter.emit = false;
particle_emitter.useWorldSpace = true;
particle_emitter.maxSize = 0.06f;
particle_emitter.minSize = 0.02f;
ParticleRenderer renderer = getOrCreateComponent< ParticleRenderer >();
Material mat = new Material( Shader.Find( "Particles/Additive (Soft)" ) );
int width = 20;
int length = 20;
Texture2D tex = new Texture2D( width, length, TextureFormat.RGBA32, false );
for ( int x = 0; x < width; ++x )
{
for ( int y = 0; y < length; ++y )
{
float dist = (x - 10) * (x-10) + (y-10) * (y-10);
dist = Mathf.Sqrt( dist );
float alpha_f = 1.0f - dist / 10.0f;
Color col = new Color( 0.8f, 0.8f, 0.8f, alpha_f );
tex.SetPixel( x, y, col );
}
}
tex.Apply();
mat.mainTexture = tex;
mat.color = new Color( 1.0f, 1.0f, 0.5f );
renderer.material = mat;
particle_emitter.Emit( part_info.pointCount );
Particle[] particles = particle_emitter.particles;
if ( particle_emitter.particles.Length < part_info.pointCount )
Debug.LogWarning( "Geo has too many particles. Expected less than "
+ particle_emitter.particles.Length
+ " but found " + part_info.pointCount + ". "
+ " Only using the first "
+ particle_emitter.particles.Length + ".");
for ( int i = 0; i < particle_emitter.particles.Length; ++i )
{
particles[ i ].position = new Vector3( pos_attr[ i * 3 + 0 ],
pos_attr[ i * 3 + 1 ],
pos_attr[ i * 3 + 2 ] );
if ( colour_attr_info.exists && colour_attr_info.owner == HAPI_AttributeOwner.HAPI_ATTROWNER_POINT )
{
float alpha =
colour_attr_info.tupleSize == 4
? colour_attr[ i * colour_attr_info.tupleSize + 3 ]
: 1.0f;
particles[ i ].color = new Color( colour_attr[ i * colour_attr_info.tupleSize + 0 ],
colour_attr[ i * colour_attr_info.tupleSize + 1 ],
colour_attr[ i * colour_attr_info.tupleSize + 2 ],
alpha );
}
}
particle_emitter.particles = particles;
}
if ( part_info.type == HAPI_PartType.HAPI_PARTTYPE_VOLUME )
{
// Clear previous volume tiles.
destroyChildren( part_node.transform );
// If we have a volume, retrieve the volume info
HAPI_VolumeInfo volume = new HAPI_VolumeInfo();
HoudiniHost.getVolumeInfo( prAssetId, prObjectId, prGeoId, prPartId, ref volume );
// The volume.transform.scale is the voxel size. Both the particle
// delta and the point size are affected by the voxel size.
HoudiniAssetUtility.applyTransform( volume.transform, part_node.transform );
float particle_delta = HoudiniConstants.HAPI_VOLUME_SURFACE_DELTA_MULT * Mathf.Max( Mathf.Max(
volume.transform.scale[ 0 ],
volume.transform.scale[ 1 ] ),
volume.transform.scale[ 2 ] );
float point_size = HoudiniConstants.HAPI_VOLUME_SURFACE_PT_SIZE_MULT * particle_delta;
List< Vector3 > acc_vertices = new List< Vector3 >();
List< Vector3 > acc_normals = new List< Vector3 >();
float[] values = new float[ volume.tileSize * volume.tileSize * volume.tileSize ];
int tile_index = 0;
int current_container_particle_index = 0;
// Iterate through the voxels and print out the data, for now.
HAPI_VolumeTileInfo tile = new HAPI_VolumeTileInfo();
HoudiniHost.getFirstVolumeTile( prAssetId, prObjectId, prGeoId, prPartId, ref tile );
while ( tile.isValid )
{
for ( int i = 0; i < values.Length; ++i )
values[ i ] = 0;
HoudiniHost.getVolumeTileFloatData(
prAssetId, prObjectId, prGeoId, prPartId, ref tile, values );
Vector3 tileMin = new Vector3( tile.minX, tile.minY, tile.minZ );
int part_index = 0;
for ( int z = 0; z < volume.tileSize; ++z )
for ( int y = 0; y < volume.tileSize; ++y )
for ( int x = 0; x < volume.tileSize; ++x )
{
int index = z * volume.tileSize * volume.tileSize + y * volume.tileSize + x;
if ( values[ index ] > -particle_delta && values[ index ] < particle_delta )
{
// Make sure we have enough room in our arrays.
if ( current_container_particle_index
> HoudiniConstants.HAPI_VOLUME_SURFACE_MAX_PT_PER_C )
{
createVolumeTilesObject(
point_size, part_node.transform, acc_vertices, acc_normals );
current_container_particle_index = 0;
acc_vertices.Clear();
acc_normals.Clear();
}
// Get particle position.
Vector3 pos = new Vector3( (float) x, (float) y, (float) z );
pos = HoudiniConstants.HAPI_VOLUME_POSITION_MULT * ( pos + tileMin );
pos.x = -pos.x;
acc_vertices.Add( part_node.transform.TransformPoint( pos ) );
// Get particle normal.
int amount = 1;
int sample_count = 0;
Vector3 average_normal = Vector3.zero;
for ( int xi = -1; xi <= 1; ++xi )
for ( int yi = -1; yi <= 1; ++yi )
for ( int zi = -1; zi <= 1; ++zi )
{
if ( xi == 0 && yi == 0 && zi == 0 )
continue;
float result = getVolumeData(
values, volume, particle_delta, x + xi * amount, y + yi * amount, z + zi * amount );
Vector3 normal = Vector3.zero;
if ( result < -0.5f )
normal = new Vector3( -xi, -yi, -zi );
else if ( result > 0.5f )
normal = new Vector3( xi, yi, zi );
else
continue;
average_normal += normal;
sample_count++;
}
average_normal /= sample_count;
average_normal.Normalize();
acc_normals.Add( average_normal );
part_index++;
current_container_particle_index++;
}
}
HoudiniHost.getNextVolumeTile( prAssetId, prObjectId, prGeoId, prPartId, ref tile );
tile_index++;
} // tile iteration
// If we have left-over particles in our arrays we need another container.
createVolumeTilesObject( point_size, part_node.transform, acc_vertices, acc_normals );
} // if has volume
else // Restore part node if previously used to store volume.
{
// Clear previous volume tiles.
destroyChildren( part_node.transform );
part_node.transform.localScale = Vector3.one;
part_node.transform.localPosition = Vector3.zero;
part_node.transform.localRotation = Quaternion.identity;
}
}
// Refresh enabled flags.
{
bool is_visible = prObjectVisible;
is_visible &= ( prAsset.prIsGeoVisible || prGeoType == HAPI_GeoType.HAPI_GEOTYPE_INTERMEDIATE );
if ( prGeoType == HAPI_GeoType.HAPI_GEOTYPE_INTERMEDIATE &&
myGeoControl.prGeoAttributeManager != null )
is_visible &=
myGeoControl.prGeoAttributeManager.prCurrentMode != HoudiniGeoAttributeManager.Mode.NONE;
if ( gameObject.GetComponent< MeshCollider >() )
gameObject.GetComponent< MeshCollider >().enabled = is_visible;
if ( gameObject.GetComponent< MeshRenderer >() )
gameObject.GetComponent< MeshRenderer >().enabled = is_visible;
}
// Assign materials.
HoudiniAssetUtility.assignMaterial( this, prAsset, reload_asset );
// Assign unity tag.
assignUnityTag();
}
private void createFogVolume( GameObject node, float[] data, HAPI_VolumeTileInfo tile, HAPI_VolumeInfo volume )
{
// Create a particle with alpha = to the data format
const float particle_epsilon = 0.0f;
int nparticles = 0;
for ( int i = 0; i < data.Length; ++i )
if ( data[ i ] > particle_epsilon )
nparticles++;
if ( nparticles == 0 )
{
DestroyImmediate( node );
return;
}
#if UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
ParticleEmitter particle_emitter = node.AddComponent( "EllipsoidParticleEmitter" ) as ParticleEmitter;
#else
ParticleEmitter particle_emitter = node.AddComponent< EllipsoidParticleEmitter >() as ParticleEmitter;
#endif // UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
particle_emitter.emit = false;
particle_emitter.maxSize = volume.transform.scale[0]*2;
particle_emitter.minSize = volume.transform.scale[1]*2;
particle_emitter.ClearParticles();
particle_emitter.Emit( nparticles );
Vector3 tileMin = new Vector3( tile.minX, tile.minY, tile.minZ );
int part_index = 0;
Particle[] particles = particle_emitter.particles;
for ( int z = 0; z < volume.tileSize; ++z )
for ( int y = 0; y < volume.tileSize; ++y )
for ( int x = 0; x < volume.tileSize; ++x )
{
int index = z * volume.tileSize * volume.tileSize + y * volume.tileSize + x;
if ( data[ index ] > particle_epsilon
&& part_index < particles.Length )
{
Vector3 pos = new Vector3( (float)x, (float)y, (float)z );
pos = 2 * ( ( pos + tileMin ) - new Vector3( 0.5f, 0.5f, 0.5f ) );
particles[ part_index ].position =
node.transform.parent.TransformPoint( pos );
particles[ part_index ].color =
new Color( data[ index ], data[ index ], data[ index ], data[ index ] );
part_index++;
}
}
particle_emitter.particles = particles;
ParticleRenderer renderer = node.GetComponent< ParticleRenderer >();
if ( renderer == null )
renderer = node.AddComponent< ParticleRenderer >();
renderer.material = createSoftCircle(
new Color( Random.Range( 0.5f, 1.0f ), Random.Range( 0.5f, 1.0f ), Random.Range( 0.5f, 1.0f ) ) );
}
private static extern HAPI_Result HAPI_GetVolumeTileFloatData( ref HAPI_Session session, HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id, float fill_value, ref HAPI_VolumeTileInfo tile, [Out] float[] values_array, int length );
HAPI_SetVolumeTileIntData( ref HAPI_Session session, HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, ref HAPI_VolumeTileInfo tile, int[] values_array, int length );
HAPI_GetVolumeTileIntData(
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id,
ref HAPI_VolumeTileInfo tile,
[Out] int[] values);
public static void getNextVolumeTile(
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id,
ref HAPI_VolumeTileInfo next )
{
#if ( UNITY_STANDALONE_WIN || UNITY_STANDALONE_OSX || ( UNITY_METRO && UNITY_EDITOR ) )
HAPI_Result status_code = HAPI_GetNextVolumeTile( ref mySession, asset_id, object_id, geo_id, part_id, ref next );
processStatusCode( status_code );
#else
throw new HoudiniErrorUnsupportedPlatform();
#endif
}
HAPI_GetFirstVolumeTile(
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id,
ref HAPI_VolumeTileInfo tile);
HAPI_GetNextVolumeTile(
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id,
ref HAPI_VolumeTileInfo next);
HAPI_SetVolumeTileIntData(
ref HAPI_Session session,
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id,
ref HAPI_VolumeTileInfo tile,
int[] values_array,
int length);
HAPI_GetVolumeTileIntData(
ref HAPI_Session session,
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id,
int fill_value, ref HAPI_VolumeTileInfo tile,
[Out] int[] values_array,
int length);
HAPI_GetNextVolumeTile(
ref HAPI_Session session,
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id,
ref HAPI_VolumeTileInfo tile);
private void createFogVolume(GameObject node, float[] data, HAPI_VolumeTileInfo tile, HAPI_VolumeInfo volume)
{
// Create a particle with alpha = to the data format
const float particle_epsilon = 0.0f;
int nparticles = 0;
for (int i = 0; i < data.Length; ++i)
{
if (data[i] > particle_epsilon)
{
nparticles++;
}
}
if (nparticles == 0)
{
DestroyImmediate(node);
return;
}
#if UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
ParticleEmitter particle_emitter = node.AddComponent("EllipsoidParticleEmitter") as ParticleEmitter;
#else
ParticleEmitter particle_emitter = node.AddComponent <EllipsoidParticleEmitter>() as ParticleEmitter;
#endif // UNITY_4_3 || UNITY_4_4 || UNITY_4_5 || UNITY_4_6
particle_emitter.emit = false;
particle_emitter.maxSize = volume.transform.scale[0] * 2;
particle_emitter.minSize = volume.transform.scale[1] * 2;
particle_emitter.ClearParticles();
particle_emitter.Emit(nparticles);
Vector3 tileMin = new Vector3(tile.minX, tile.minY, tile.minZ);
int part_index = 0;
Particle[] particles = particle_emitter.particles;
for (int z = 0; z < volume.tileSize; ++z)
{
for (int y = 0; y < volume.tileSize; ++y)
{
for (int x = 0; x < volume.tileSize; ++x)
{
int index = z * volume.tileSize * volume.tileSize + y * volume.tileSize + x;
if (data[index] > particle_epsilon &&
part_index < particles.Length)
{
Vector3 pos = new Vector3((float)x, (float)y, (float)z);
pos = 2 * ((pos + tileMin) - new Vector3(0.5f, 0.5f, 0.5f));
particles[part_index].position =
node.transform.parent.TransformPoint(pos);
particles[part_index].color =
new Color(data[index], data[index], data[index], data[index]);
part_index++;
}
}
}
}
particle_emitter.particles = particles;
ParticleRenderer renderer = node.GetComponent <ParticleRenderer>();
if (renderer == null)
{
renderer = node.AddComponent <ParticleRenderer>();
}
renderer.material = createSoftCircle(
new Color(Random.Range(0.5f, 1.0f), Random.Range(0.5f, 1.0f), Random.Range(0.5f, 1.0f)));
}
HAPI_GetNextVolumeTile( ref HAPI_Session session, HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id, ref HAPI_VolumeTileInfo tile );
private void createSurfaceVolume(GameObject node, float[] data, HAPI_VolumeTileInfo tile, HAPI_VolumeInfo volume)
{
// Create a particle with alpha = to the data format
const float particle_epsilon = 0.05f;
int particle_count = 0;
for (int i = 0; i < data.Length; ++i)
{
if (data[i] > -particle_epsilon && data[i] < particle_epsilon)
{
particle_count++;
}
}
MeshFilter mesh_filter = HoudiniControl.getOrCreateComponent <MeshFilter>(node);
MeshRenderer mesh_renderer = HoudiniControl.getOrCreateComponent <MeshRenderer>(node);
if (!mesh_filter.sharedMesh)
{
mesh_filter.sharedMesh = new Mesh();
}
mesh_filter.sharedMesh.Clear();
if (particle_count <= 0)
{
return;
}
if (!mesh_renderer.sharedMaterial)
{
mesh_renderer.sharedMaterial = new Material(Shader.Find("Houdini/VolumeSurface"));
}
mesh_renderer.sharedMaterial.SetFloat("_PointSize", 70.0f);
mesh_renderer.sharedMaterial.SetColor("_Color", new Color(1.0f, 0.9f, 0.9f));
Vector3[] vertices = new Vector3[particle_count];
Color[] colors = new Color[particle_count];
Vector3[] normals = new Vector3[particle_count];
Vector2[] uvs = new Vector2[particle_count];
// Create the selection indices.
int[] indices = new int[vertices.Length];
for (int i = 0; i < vertices.Length; ++i)
{
indices[i] = i;
}
Vector3 tileMin = new Vector3(tile.minX, tile.minY, tile.minZ);
//float volume_scale = volume.transform.scale[ 0 ] * 2.0f;
int part_index = 0;
for (int z = 0; z < volume.tileSize; ++z)
{
for (int y = 0; y < volume.tileSize; ++y)
{
for (int x = 0; x < volume.tileSize; ++x)
{
int index = z * volume.tileSize * volume.tileSize + y * volume.tileSize + x;
if (data[index] > -particle_epsilon && data[index] < particle_epsilon &&
part_index < particle_count)
{
// Get particle position.
Vector3 pos = new Vector3((float)x, (float)y, (float)z);
pos = 1.2f * ((pos + tileMin) - new Vector3(0.5f, 0.5f, 0.5f));
vertices[part_index] = node.transform.parent.TransformPoint(pos);
// Get particle normal.
int amount = 1;
int sample_count = 0;
Vector3 average_normal = Vector3.zero;
for (int xi = -1; xi <= 1; ++xi)
{
for (int yi = -1; yi <= 1; ++yi)
{
for (int zi = -1; zi <= 1; ++zi)
{
if (xi == 0 && yi == 0 && zi == 0)
{
continue;
}
float result = getVolumeData(data, volume, particle_epsilon, x + xi * amount, y + yi * amount, z + zi * amount);
Vector3 normal = Vector3.zero;
if (result < -0.5f)
{
normal = new Vector3(-xi, -yi, -zi);
}
else if (result > 0.5f)
{
normal = new Vector3(xi, yi, zi);
}
else
{
continue;
}
average_normal += normal;
sample_count++;
}
}
}
average_normal /= sample_count;
average_normal.Normalize();
normals[part_index] = average_normal;
// Get particle color.
average_normal.x += 1.0f; average_normal.y += 1.0f; average_normal.z += 1.0f;
average_normal /= 2.0f;
colors[part_index] = new Color(average_normal.x, average_normal.y, average_normal.z, 1);
part_index++;
}
}
}
}
mesh_filter.sharedMesh.vertices = vertices;
mesh_filter.sharedMesh.colors = colors;
mesh_filter.sharedMesh.normals = normals;
mesh_filter.sharedMesh.uv = uvs;
mesh_filter.sharedMesh.SetIndices(indices, MeshTopology.Points, 0);
}
HAPI_GetVolumeTileIntData( ref HAPI_Session session, HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id, int fill_value, ref HAPI_VolumeTileInfo tile, [Out] int[] values_array, int length );
public static void getVolumeTileFloatData(
HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id,
ref HAPI_VolumeTileInfo tile, [Out] float[] values )
{
#if ( UNITY_STANDALONE_WIN || UNITY_STANDALONE_OSX || ( UNITY_METRO && UNITY_EDITOR ) )
HAPI_Result status_code = HAPI_GetVolumeTileFloatData(
ref mySession, asset_id, object_id, geo_id, part_id, 0.0f, ref tile, values, values.Length );
processStatusCode( status_code );
#else
throw new HoudiniErrorUnsupportedPlatform();
#endif
}
private static extern HAPI_Result HAPI_GetNextVolumeTile( ref HAPI_Session session, HAPI_AssetId asset_id, HAPI_ObjectId object_id, HAPI_GeoId geo_id, HAPI_PartId part_id, ref HAPI_VolumeTileInfo tile );