/// <summary>
/// Given a ProjectionAxis, return the appropriate Vector3 conversion.
/// </summary>
/// <param name="axis"></param>
/// <returns></returns>
internal static Vector3 ProjectionAxisToVector(ProjectionAxis axis)
{
switch (axis)
{
case ProjectionAxis.X:
return(Vector3.right);
case ProjectionAxis.Y:
return(Vector3.up);
case ProjectionAxis.Z:
return(Vector3.forward);
case ProjectionAxis.XNegative:
return(-Vector3.right);
case ProjectionAxis.YNegative:
return(-Vector3.up);
case ProjectionAxis.ZNegative:
return(-Vector3.forward);
default:
return(Vector3.zero);
}
}
static Plane GetPlaneFromCameraDirection()
{
var sceneView = SceneView.lastActiveSceneView;
var cameraDirection = sceneView.camera.transform.forward;
float pitch = Mathf.Abs(Vector3.Dot(cameraDirection, Vector3.up));
float right = Mathf.Abs(Vector3.Dot(cameraDirection, Vector3.right));
float forward = Mathf.Abs(Vector3.Dot(cameraDirection, Vector3.forward));
ProjectionAxis axis = ProjectionAxis.Y;
// Orthographic view, use X or Z
if (pitch < .02f)
{
if (right > forward)
{
axis = ProjectionAxis.X;
}
else
{
axis = ProjectionAxis.Z;
}
}
return(new Plane(Projection.ProjectionAxisToVector(axis), SceneView.lastActiveSceneView.pivot));
}
public pb_UV(pb_UV uvs)
{
projectionAxis = uvs.projectionAxis;
useWorldSpace = uvs.useWorldSpace;
flipU = uvs.flipU;
flipV = uvs.flipV;
swapUV = uvs.swapUV;
fill = uvs.fill;
scale = uvs.scale;
offset = uvs.offset;
rotation = uvs.rotation;
justify = uvs.justify;
}
public pb_UV(pb_UV uvs)
{
projectionAxis = uvs.projectionAxis;
useWorldSpace = uvs.useWorldSpace;
flipU = uvs.flipU;
flipV = uvs.flipV;
swapUV = uvs.swapUV;
fill = uvs.fill;
scale = uvs.scale;
offset = uvs.offset;
rotation = uvs.rotation;
justify = uvs.justify;
}
public Vector3 projectionValue; ///< If projectionAxis is set to Instance, this is the value that will be used to project UV coordinates.
#endregion
#region INITIALIZATION
public pb_UV()
{
projectionAxis = ProjectionAxis.AUTO;
useWorldSpace = false;
justify = Justify.None;
flipU = false;
flipV = false;
swapUV = false;
fill = Fill.Tile;
scale = new Vector2(1f, 1f);
offset = new Vector2(0f, 0f);
rotation = 0f;
}
public Vector3 projectionValue; ///< If projectionAxis is set to Instance, this is the value that will be used to project UV coordinates.
#endregion
#region INITIALIZATION
public pb_UV()
{
projectionAxis = ProjectionAxis.AUTO;
useWorldSpace = false;
justify = Justify.None;
flipU = false;
flipV = false;
swapUV = false;
fill = Fill.Tile;
scale = new Vector2(1f, 1f);
offset = new Vector2(0f, 0f);
rotation = 0f;
}
public static Vector2[] PlanarProject(Vector3[] verts, Vector3 planeNormal, ProjectionAxis projectionAxis)
{
Vector2[] uvs = new Vector2[verts.Length];
Vector3 vec = Vector3.zero;
switch (projectionAxis)
{
case ProjectionAxis.X:
case ProjectionAxis.X_Negative:
vec = Vector3.up;
break;
case ProjectionAxis.Y:
case ProjectionAxis.Y_Negative:
vec = Vector3.forward;
break;
// vec = -Vector3.forward;
// break;
case ProjectionAxis.Z:
case ProjectionAxis.Z_Negative:
vec = Vector3.up;
break;
}
/**
* Assign vertices to UV coordinates
*/
Vector3 uAxis, vAxis;
// get U axis
uAxis = Vector3.Cross(planeNormal, vec);
uAxis.Normalize();
// calculate V axis relative to U
vAxis = Vector3.Cross(uAxis, planeNormal);
vAxis.Normalize();
for (int i = 0; i < verts.Length; i++)
{
float u, v;
u = Vector3.Dot(uAxis, verts[i]);
v = Vector3.Dot(vAxis, verts[i]);
uvs[i] = new Vector2(u, v);
}
return(uvs);
}
/// <summary>
/// Projects UVs for each face using the closest normal on a box and then place the lower left coordinate at the anchor position.
/// </summary>
/// <param name="mesh"></param>
/// <param name="faces"></param>
/// <param name="lowerLeftAnchor"></param>
/// <param name="channel"></param>
public static void ProjectFacesBox(ProBuilderMesh mesh, Face[] faces, Vector2 lowerLeftAnchor, int channel = 0)
{
Vector2[] uv = GetUVs(mesh, channel);
Dictionary <ProjectionAxis, List <Face> > sorted = new Dictionary <ProjectionAxis, List <Face> >();
for (int i = 0; i < faces.Length; i++)
{
Vector3 nrm = Math.Normal(mesh, faces[i]);
ProjectionAxis axis = Projection.VectorToProjectionAxis(nrm);
if (sorted.ContainsKey(axis))
{
sorted[axis].Add(faces[i]);
}
else
{
sorted.Add(axis, new List <Face>()
{
faces[i]
});
}
// clean up UV stuff - no shared UV indexes and remove element group
faces[i].elementGroup = -1;
faces[i].manualUV = true;
}
foreach (KeyValuePair <ProjectionAxis, List <Face> > kvp in sorted)
{
int[] distinct = kvp.Value.SelectMany(x => x.distinctIndexesInternal).ToArray();
Vector2[] uvs = Projection.PlanarProject(mesh.positionsInternal, distinct, Projection.ProjectionAxisToVector(kvp.Key));
Vector2 minimalUV = FindMinimalUV(uvs);
for (int n = 0; n < distinct.Length; n++)
{
uv[distinct[n]] = uvs[n] - minimalUV;
}
SplitUVs(mesh, distinct);
}
/* and set the msh uv array using the new coordintaes */
ApplyUVs(mesh, uv, channel);
}
/**
* Projects UVs for each face using the closest normal on a box.
*/
public static void ProjectFacesBox(pb_Object pb, pb_Face[] faces)
{
Vector2[] uv = pb.uv;
Dictionary <ProjectionAxis, List <pb_Face> > sorted = new Dictionary <ProjectionAxis, List <pb_Face> >();
for (int i = 0; i < faces.Length; i++)
{
Vector3 nrm = pb_Math.Normal(pb, faces[i]);
ProjectionAxis axis = pb_Math.VectorToProjectionAxis(nrm);
if (sorted.ContainsKey(axis))
{
sorted[axis].Add(faces[i]);
}
else
{
sorted.Add(axis, new List <pb_Face>()
{
faces[i]
});
}
// clean up UV stuff - no shared UV indices and remove element group
faces[i].elementGroup = -1;
}
foreach (KeyValuePair <ProjectionAxis, List <pb_Face> > kvp in sorted)
{
int[] distinct = pb_Face.AllTrianglesDistinct(kvp.Value.ToArray());
Vector2[] uvs = pb_Math.PlanarProject(pb.GetVertices(distinct), pb_Math.ProjectionAxisToVector(kvp.Key), kvp.Key);
for (int n = 0; n < distinct.Length; n++)
{
uv[distinct[n]] = uvs[n];
}
SplitUVs(pb, distinct);
}
/* and set the msh uv array using the new coordintaes */
pb.SetUV(uv);
pb.ToMesh();
pb.Refresh();
}
internal static Vector3 GetTangentToAxis(ProjectionAxis axis)
{
// old probuilder didn't respect project axis settings properly, and changing it to the correct version
// (ProjectionAxisToVector) would break existing models.
switch (axis)
{
case ProjectionAxis.X:
case ProjectionAxis.XNegative:
return(Vector3.up);
case ProjectionAxis.Y:
case ProjectionAxis.YNegative:
return(Vector3.forward);
case ProjectionAxis.Z:
case ProjectionAxis.ZNegative:
return(Vector3.up);
default:
return(Vector3.up);
}
}
public pb_UV(
ProjectionAxis _projectionAxis,
bool _useWorldSpace,
bool _flipU,
bool _flipV,
bool _swapUV,
Fill _fill,
Vector2 _scale,
Vector2 _offset,
float _rotation,
Justify _justify
)
{
projectionAxis = _projectionAxis;
useWorldSpace = _useWorldSpace;
flipU = _flipU;
flipV = _flipV;
swapUV = _swapUV;
fill = _fill;
scale = _scale;
offset = _offset;
rotation = _rotation;
justify = _justify;
}
public pb_UV(
ProjectionAxis _projectionAxis,
bool _useWorldSpace,
bool _flipU,
bool _flipV,
bool _swapUV,
Fill _fill,
Vector2 _scale,
Vector2 _offset,
float _rotation,
Justify _justify
)
{
projectionAxis = _projectionAxis;
useWorldSpace = _useWorldSpace;
flipU = _flipU;
flipV = _flipV;
swapUV = _swapUV;
fill = _fill;
scale = _scale;
offset = _offset;
rotation = _rotation;
justify = _justify;
}
public HeightMapNoiseModule(string height_map_filename, OpenTK.Vector3 axial_frequencies, OpenTK.Vector3 projection_offset, ProjectionAxis axis) : base(axial_frequencies)
{
m_heightmap_data = new HeightMapData("Assets\\Textures\\DeformationHeightMaps\\" + height_map_filename);
m_projection_axis = axis;
m_projection_offset = projection_offset;
}
// No default/parameterless constructor, since you need to specify a filename and projection axis.
// We assume for the moment that all heightmaps must be located at Assets/Textures/DeformationHeightMaps.
// If that restriction becomes a problem, we can change this behavior to either search the entire Assets tree,
// or require the higher-level code to provide a full relative path instead of just a filename.
//
// The projection axis takes the place of the anti_y/pos_y/neg_y params in the base noise module class, so those base
// params are not used for this module.
public HeightMapNoiseModule(string height_map_filename, ProjectionAxis axis) : base()
{
m_heightmap_data = new HeightMapData("Assets\\Textures\\DeformationHeightMaps\\" + height_map_filename);
m_projection_axis = axis;
m_projection_offset = OpenTK.Vector3.Zero;
}
