internal static void PlanarProject(ProBuilderMesh mesh, int textureGroup, AutoUnwrapSettings unwrapSettings)
{
var worldSpace = unwrapSettings.useWorldSpace;
var trs = (Transform)null;
var faces = mesh.facesInternal;
// Get a projection direction by averaging the normals of all selected faces
var projectionDirection = Vector3.zero;
for (int f = 0, fc = faces.Length; f < fc; ++f)
{
if (faces[f].textureGroup != textureGroup)
{
continue;
}
var nrm = Math.Normal(mesh, faces[f]);
projectionDirection += nrm;
}
if (worldSpace)
{
trs = mesh.transform;
projectionDirection = trs.TransformDirection(projectionDirection);
}
var axis = VectorToProjectionAxis(projectionDirection);
var prj = GetTangentToAxis(axis);
var u = Vector3.Cross(projectionDirection, prj);
var v = Vector3.Cross(u, projectionDirection);
u.Normalize();
v.Normalize();
var positions = mesh.positionsInternal;
var textures = mesh.texturesInternal;
for (int f = 0, fc = faces.Length; f < fc; ++f)
{
if (faces[f].textureGroup != textureGroup)
{
continue;
}
var indexes = faces[f].distinctIndexesInternal;
for (int i = 0, ic = indexes.Length; i < ic; ++i)
{
var p = worldSpace ? trs.TransformPoint(positions[indexes[i]]) : positions[indexes[i]];
textures[indexes[i]].x = Vector3.Dot(u, p);
textures[indexes[i]].y = Vector3.Dot(v, p);
}
}
}
internal Face(IEnumerable <int> triangles, int submeshIndex, AutoUnwrapSettings u, int smoothing, int texture, int element, bool manualUVs)
{
SetIndexes(triangles);
m_Uv = new AutoUnwrapSettings(u);
m_SmoothingGroup = smoothing;
textureGroup = texture;
elementGroup = element;
manualUV = manualUVs;
m_SubmeshIndex = submeshIndex;
}
/// <summary>
/// Initialize a Face with a set of triangles and default values.
/// </summary>
/// <param name="indices">The new triangles array.</param>
public Face(IEnumerable <int> indices)
{
SetIndexes(indices);
m_Uv = AutoUnwrapSettings.tile;
m_Material = BuiltinMaterials.defaultMaterial;
m_SmoothingGroup = Smoothing.smoothingGroupNone;
m_SubmeshIndex = 0;
textureGroup = -1;
elementGroup = 0;
}
/// <summary>
/// Initialize a Face with a set of triangles and default values.
/// </summary>
/// <param name="array">The new triangles array.</param>
public Face(int[] array)
{
SetIndexes(array);
m_Uv = AutoUnwrapSettings.tile;
m_Material = BuiltinMaterials.defaultMaterial;
m_SmoothingGroup = Smoothing.smoothingGroupNone;
m_SubmeshIndex = 0;
textureGroup = -1;
elementGroup = 0;
}
internal Face(int[] triangles, Material m, AutoUnwrapSettings u, int smoothing, int texture, int element, bool manualUVs)
{
SetIndexes(triangles);
m_Uv = new AutoUnwrapSettings(u);
m_Material = m;
m_SmoothingGroup = smoothing;
textureGroup = texture;
elementGroup = element;
manualUV = manualUVs;
m_SubmeshIndex = 0;
}
/// <summary>
/// A copy constructor.
/// </summary>
/// <param name="unwrapSettings">The settings to copy to this new instance.</param>
public AutoUnwrapSettings(AutoUnwrapSettings unwrapSettings)
{
m_UseWorldSpace = unwrapSettings.m_UseWorldSpace;
m_FlipU = unwrapSettings.m_FlipU;
m_FlipV = unwrapSettings.m_FlipV;
m_SwapUV = unwrapSettings.m_SwapUV;
m_Fill = unwrapSettings.m_Fill;
m_Scale = unwrapSettings.m_Scale;
m_Offset = unwrapSettings.m_Offset;
m_Rotation = unwrapSettings.m_Rotation;
m_Anchor = unwrapSettings.m_Anchor;
}
internal static void ProjectTextureGroup(ProBuilderMesh mesh, int group, AutoUnwrapSettings unwrapSettings)
{
Projection.PlanarProject(mesh, group, unwrapSettings);
foreach (var face in mesh.facesInternal)
{
if (face.textureGroup == group)
{
ApplyUVSettings(mesh.texturesInternal, face.distinctIndexesInternal, unwrapSettings);
}
}
}
internal static void ProjectTextureGroup(ProBuilderMesh mesh, int group, AutoUnwrapSettings unwrapSettings)
{
Projection.PlanarProject(mesh, group, unwrapSettings);
s_IndexBuffer.Clear();
foreach (var face in mesh.facesInternal)
{
if (face.textureGroup == group)
{
s_IndexBuffer.AddRange(face.distinctIndexesInternal);
}
}
ApplyUVSettings(mesh.texturesInternal, s_IndexBuffer, unwrapSettings);
}
internal void SetGroupUV(AutoUnwrapSettings settings, int group)
{
if (!IsValidTextureGroup(group))
{
return;
}
foreach (var face in facesInternal)
{
if (face.textureGroup != group)
{
continue;
}
face.uv = settings;
}
}
internal static void PlanarProject(ProBuilderMesh mesh, int textureGroup, AutoUnwrapSettings unwrapSettings)
{
var worldSpace = unwrapSettings.useWorldSpace;
var nrm = FindBestPlane(mesh, textureGroup).normal;
var trs = (Transform)null;
if (worldSpace)
{
trs = mesh.transform;
nrm = trs.TransformDirection(nrm);
}
var axis = VectorToProjectionAxis(nrm);
var prj = GetTangentToAxis(axis);
var u = Vector3.Cross(nrm, prj);
var v = Vector3.Cross(u, nrm);
u.Normalize();
v.Normalize();
var faces = mesh.facesInternal;
var positions = mesh.positionsInternal;
var textures = mesh.texturesInternal;
for (int f = 0, fc = faces.Length; f < fc; ++f)
{
if (faces[f].textureGroup != textureGroup)
{
continue;
}
var indexes = faces[f].distinctIndexesInternal;
for (int i = 0, ic = indexes.Length; i < ic; ++i)
{
var p = worldSpace ? trs.TransformPoint(positions[indexes[i]]) : positions[indexes[i]];
textures[indexes[i]].x = Vector3.Dot(u, p);
textures[indexes[i]].y = Vector3.Dot(v, p);
}
}
}
/// <summary>
/// Copies values from other to this face.
/// </summary>
/// <param name="other">The Face from which to copy properties.</param>
public void CopyFrom(Face other)
{
if (other == null)
{
throw new ArgumentNullException("other");
}
int len = other.indexesInternal.Length;
m_Indexes = new int[len];
Array.Copy(other.indexesInternal, m_Indexes, len);
m_SmoothingGroup = other.smoothingGroup;
m_Uv = new AutoUnwrapSettings(other.uv);
#pragma warning disable 618
m_Material = other.material;
#pragma warning restore 618
manualUV = other.manualUV;
elementGroup = other.elementGroup;
m_SubmeshIndex = other.m_SubmeshIndex;
InvalidateCache();
}
static void ApplyUVSettings(Vector2[] uvs, int[] indexes, AutoUnwrapSettings uvSettings)
{
int len = indexes.Length;
switch (uvSettings.fill)
{
case AutoUnwrapSettings.Fill.Tile:
break;
case AutoUnwrapSettings.Fill.Fit:
FitUVs(uvs, indexes);
break;
case AutoUnwrapSettings.Fill.Stretch:
StretchUVs(uvs, indexes);
break;
}
if (!uvSettings.useWorldSpace && uvSettings.anchor != AutoUnwrapSettings.Anchor.None)
{
ApplyUVAnchor(uvs, indexes, uvSettings.anchor);
}
// Apply transform last, so that fill and justify don't override it.
if (uvSettings.scale.x != 1f ||
uvSettings.scale.y != 1f ||
uvSettings.rotation != 0f)
{
Vector2 center = Bounds2D.Center(uvs, indexes);
for (int i = 0; i < len; i++)
{
uvs[indexes[i]] = uvs[indexes[i]].ScaleAroundPoint(center, uvSettings.scale);
uvs[indexes[i]] = uvs[indexes[i]].RotateAroundPoint(center, uvSettings.rotation);
}
}
if (uvSettings.flipU || uvSettings.flipV || uvSettings.swapUV)
{
for (int i = 0; i < len; i++)
{
float u = uvs[indexes[i]].x,
v = uvs[indexes[i]].y;
if (uvSettings.flipU)
{
u = -u;
}
if (uvSettings.flipV)
{
v = -v;
}
if (!uvSettings.swapUV)
{
uvs[indexes[i]].x = u;
uvs[indexes[i]].y = v;
}
else
{
uvs[indexes[i]].x = v;
uvs[indexes[i]].y = u;
}
}
}
for (int i = 0; i < indexes.Length; i++)
{
uvs[indexes[i]].x -= uvSettings.offset.x;
uvs[indexes[i]].y -= uvSettings.offset.y;
}
}
static void ApplyUVSettings(Vector2[] uvs, IList <int> indexes, AutoUnwrapSettings uvSettings)
{
int len = indexes.Count;
Bounds2D bounds = new Bounds2D(uvs, indexes);
switch (uvSettings.fill)
{
case AutoUnwrapSettings.Fill.Tile:
break;
case AutoUnwrapSettings.Fill.Fit:
var max = Mathf.Max(bounds.size.x, bounds.size.y);
ScaleUVs(uvs, indexes, new Vector2(max, max), bounds);
bounds.center /= max;
break;
case AutoUnwrapSettings.Fill.Stretch:
ScaleUVs(uvs, indexes, bounds.size, bounds);
bounds.center /= bounds.size;
break;
}
// Apply transform last, so that fill and justify don't override it.
if (uvSettings.scale.x != 1f || uvSettings.scale.y != 1f || uvSettings.rotation != 0f)
{
// apply an offset to the positions relative to UV scale before rotation or scale is applied so that
// UVs remain static in UV space
Vector2 scaledCenter = bounds.center * uvSettings.scale;
Vector2 delta = bounds.center - scaledCenter;
Vector2 center = scaledCenter;
for (int i = 0; i < len; i++)
{
uvs[indexes[i]] -= delta;
uvs[indexes[i]] = uvs[indexes[i]].ScaleAroundPoint(center, uvSettings.scale);
uvs[indexes[i]] = uvs[indexes[i]].RotateAroundPoint(center, uvSettings.rotation);
}
}
if (!uvSettings.useWorldSpace && uvSettings.anchor != AutoUnwrapSettings.Anchor.None)
{
ApplyUVAnchor(uvs, indexes, uvSettings.anchor);
}
if (uvSettings.flipU || uvSettings.flipV || uvSettings.swapUV)
{
for (int i = 0; i < len; i++)
{
float u = uvs[indexes[i]].x,
v = uvs[indexes[i]].y;
if (uvSettings.flipU)
{
u = -u;
}
if (uvSettings.flipV)
{
v = -v;
}
if (!uvSettings.swapUV)
{
uvs[indexes[i]].x = u;
uvs[indexes[i]].y = v;
}
else
{
uvs[indexes[i]].x = v;
uvs[indexes[i]].y = u;
}
}
}
for (int i = 0; i < indexes.Count; i++)
{
uvs[indexes[i]].x -= uvSettings.offset.x;
uvs[indexes[i]].y -= uvSettings.offset.y;
}
}
