/**
* Copy values array to another splatweight. This function doesn't check
* that attribute layouts are matching; musht do this yourself.
*/
public void CopyTo(z_SplatWeight other)
{
for (int i = 0; i < values.Length; i++)
{
other.values[i] = this.values[i];
}
}
public void Lerp(z_SplatWeight lhs, z_SplatWeight rhs, float alpha, List <int> mask)
{
// optimize for some common values
// unrolling the loop in these smaller cases can improve performances by ~33%
if (mask.Count == 4)
{
values[mask[0]] = Mathf.LerpUnclamped(lhs.values[mask[0]], rhs.values[mask[0]], alpha);
values[mask[1]] = Mathf.LerpUnclamped(lhs.values[mask[1]], rhs.values[mask[1]], alpha);
values[mask[2]] = Mathf.LerpUnclamped(lhs.values[mask[2]], rhs.values[mask[2]], alpha);
values[mask[3]] = Mathf.LerpUnclamped(lhs.values[mask[3]], rhs.values[mask[3]], alpha);
}
else if (mask.Count == 8)
{
values[mask[0]] = Mathf.LerpUnclamped(lhs.values[mask[0]], rhs.values[mask[0]], alpha);
values[mask[1]] = Mathf.LerpUnclamped(lhs.values[mask[1]], rhs.values[mask[1]], alpha);
values[mask[2]] = Mathf.LerpUnclamped(lhs.values[mask[2]], rhs.values[mask[2]], alpha);
values[mask[3]] = Mathf.LerpUnclamped(lhs.values[mask[3]], rhs.values[mask[3]], alpha);
values[mask[4]] = Mathf.LerpUnclamped(lhs.values[mask[4]], rhs.values[mask[4]], alpha);
values[mask[5]] = Mathf.LerpUnclamped(lhs.values[mask[5]], rhs.values[mask[5]], alpha);
values[mask[6]] = Mathf.LerpUnclamped(lhs.values[mask[6]], rhs.values[mask[6]], alpha);
values[mask[7]] = Mathf.LerpUnclamped(lhs.values[mask[7]], rhs.values[mask[7]], alpha);
}
else
{
for (int i = 0; i < mask.Count; i++)
{
values[mask[i]] = Mathf.LerpUnclamped(lhs.values[mask[i]], rhs.values[mask[i]], alpha);
}
}
}
public void LerpWeights(z_SplatSet lhs, z_SplatWeight rhs, float alpha)
{
for (int i = 0; i < weightCount; i++)
{
foreach (var cm in channelMap)
{
this.weights[cm.Value][i] = Vector4.LerpUnclamped(lhs.weights[cm.Value][i], rhs[cm.Key], alpha);
}
}
}
public static z_SplatWeight Lerp(z_SplatWeight lhs, z_SplatWeight rhs, float alpha)//, z_SplatWeight target)
{
int len = System.Math.Min(lhs.Length, rhs.Length);
byte[] lerped = new byte[len];
for(int i = 0; i < len; i++)
lerped[i] = (byte) (lhs.components[i] * (1f-alpha) + rhs.components[i] * alpha);
return new z_SplatWeight(lerped);
}
private void RebuildColorTargets(z_SplatWeight blend, float strength)
{
if (blend == null || splat_cache == null || splat_target == null)
{
return;
}
minWeights = splat_target.GetMinWeights();
splat_target.LerpWeights(splat_cache, blend, strength);
splat_erase.LerpWeights(splat_cache, minWeights, strength);
}
public z_SplatWeight GetMaxWeights()
{
z_SplatWeight max = new z_SplatWeight(channelMap);
foreach (z_AttributeLayout al in attributeLayout)
{
Vector4 v = max[al.channel];
v[(int)al.index] = al.max;
max[al.channel] = v;
}
return(max);
}
public z_SplatWeight GetMinWeights()
{
z_SplatWeight min = new z_SplatWeight(channelMap);
foreach (z_AttributeLayout al in attributeLayout)
{
Vector4 v = min[al.channel];
v[(int)al.index] = al.min;
min[al.channel] = v;
}
return(min);
}
/**
* Deep copy constructor.
*/
public z_SplatWeight(z_SplatWeight rhs)
{
this.map = new Dictionary <z_MeshChannel, int>();
foreach (var kvp in rhs.map)
{
this.map.Add(kvp.Key, kvp.Value);
}
int len = rhs.values.Length;
this.values = new float[len];
System.Array.Copy(rhs.values, this.values, len);
}
/**
* Editor for blend. Returns true if blend has been modified.
*/
public static int OnInspectorGUI(int index, ref z_SplatWeight blend, z_AttributeLayout[] attribs)
{
// if(blend == null && attribs != null)
// blend = new z_SplatWeight( z_SplatWeight.GetChannelMap(attribs) );
// bool mismatchedOrNullAttributes = blend == null || !blend.MatchesAttributes(attribs);
Rect r = GUILayoutUtility.GetLastRect();
int yPos = (int)Mathf.Ceil(r.y + r.height);
index = z_GUILayout.ChannelField(index, attribs, thumbSize, yPos);
return(index);
}
public void Lerp(z_SplatWeight lhs, z_SplatWeight rhs, float alpha)
{
int len = values.Length;
if (len == 4)
{
values[0] = Mathf.LerpUnclamped(lhs.values[0], rhs.values[0], alpha);
values[1] = Mathf.LerpUnclamped(lhs.values[1], rhs.values[1], alpha);
values[2] = Mathf.LerpUnclamped(lhs.values[2], rhs.values[2], alpha);
values[3] = Mathf.LerpUnclamped(lhs.values[3], rhs.values[3], alpha);
}
else if (len == 8)
{
values[0] = Mathf.LerpUnclamped(lhs.values[0], rhs.values[0], alpha);
values[1] = Mathf.LerpUnclamped(lhs.values[1], rhs.values[1], alpha);
values[2] = Mathf.LerpUnclamped(lhs.values[2], rhs.values[2], alpha);
values[3] = Mathf.LerpUnclamped(lhs.values[3], rhs.values[3], alpha);
values[4] = Mathf.LerpUnclamped(lhs.values[4], rhs.values[4], alpha);
values[5] = Mathf.LerpUnclamped(lhs.values[5], rhs.values[5], alpha);
values[6] = Mathf.LerpUnclamped(lhs.values[6], rhs.values[6], alpha);
values[7] = Mathf.LerpUnclamped(lhs.values[7], rhs.values[7], alpha);
}
else if (len == 16)
{
values[0] = Mathf.LerpUnclamped(lhs.values[0], rhs.values[0], alpha);
values[1] = Mathf.LerpUnclamped(lhs.values[1], rhs.values[1], alpha);
values[2] = Mathf.LerpUnclamped(lhs.values[2], rhs.values[2], alpha);
values[3] = Mathf.LerpUnclamped(lhs.values[3], rhs.values[3], alpha);
values[4] = Mathf.LerpUnclamped(lhs.values[4], rhs.values[4], alpha);
values[5] = Mathf.LerpUnclamped(lhs.values[5], rhs.values[5], alpha);
values[6] = Mathf.LerpUnclamped(lhs.values[6], rhs.values[6], alpha);
values[7] = Mathf.LerpUnclamped(lhs.values[7], rhs.values[7], alpha);
values[8] = Mathf.LerpUnclamped(lhs.values[8], rhs.values[8], alpha);
values[9] = Mathf.LerpUnclamped(lhs.values[9], rhs.values[9], alpha);
values[10] = Mathf.LerpUnclamped(lhs.values[10], rhs.values[10], alpha);
values[11] = Mathf.LerpUnclamped(lhs.values[11], rhs.values[11], alpha);
values[12] = Mathf.LerpUnclamped(lhs.values[12], rhs.values[12], alpha);
values[13] = Mathf.LerpUnclamped(lhs.values[13], rhs.values[13], alpha);
values[14] = Mathf.LerpUnclamped(lhs.values[14], rhs.values[14], alpha);
values[15] = Mathf.LerpUnclamped(lhs.values[15], rhs.values[15], alpha);
}
else
{
for (int i = 0; i < lhs.values.Length; i++)
{
values[i] = Mathf.LerpUnclamped(lhs.values[i], rhs.values[i], alpha);
}
}
}
public static z_SplatWeight OnInspectorGUI(z_SplatWeight blend, Texture2D[] textures)
{
byte[] bytes = blend.components;
if(bytes == null)
{
bytes = new byte[z_SplatWeight.MAX_TEXTURE_COMPONENTS];
bytes[0] = 255;
return new z_SplatWeight(bytes);
}
Texture2D[] channel_textures;
// if textures array is longer than the number of channels available, truncate it.
// if the opposite is true, do not care.
if(textures == null)
{
channel_textures = z_Util.Fill<Texture2D>((Texture2D)null, bytes.Length);
}
else if(textures.Length > bytes.Length)
{
channel_textures = new Texture2D[bytes.Length];
System.Array.Copy(textures, 0, channel_textures, 0, bytes.Length);
}
else
{
channel_textures = textures;
}
int index = System.Array.FindIndex(bytes, x => x > 0);
EditorGUI.BeginChangeCheck();
index = z_GUI.ChannelField(index, channel_textures, thumbSize);
if(EditorGUI.EndChangeCheck())
{
for(int i = 0; i < bytes.Length; i++)
bytes[i] = 0;
bytes[index] = 255;
return new z_SplatWeight(bytes);
}
else
{
return blend;
}
}
// Called when the mouse begins hovering an editable object.
public override void OnBrushEnter(z_EditableObject target, z_BrushSettings settings)
{
base.OnBrushEnter(target, settings);
if (target.editMesh == null)
{
return;
}
likelySupportsTextureBlending = CheckForTextureBlendSupport(target.gameObject);
if (likelySupportsTextureBlending && (brushColor == null || !brushColor.MatchesAttributes(meshAttributes)))
{
brushColor = new z_SplatWeight(z_SplatWeight.GetChannelMap(meshAttributes));
SetBrushColorWithAttributeIndex(z_Math.Clamp(selectedAttributeIndex, 0, meshAttributes.Length - 1));
}
RebuildCaches(target.editMesh, settings.strength);
RebuildColorTargets(brushColor, settings.strength);
}
public override void OnEnable()
{
base.OnEnable();
modeIcons[0].image = z_IconUtility.GetIcon("Icon/Brush");
modeIcons[1].image = z_IconUtility.GetIcon("Icon/Roller");
likelySupportsTextureBlending = false;
meshAttributesContainer = null;
brushColor = null;
foreach (GameObject go in Selection.gameObjects)
{
likelySupportsTextureBlending = CheckForTextureBlendSupport(go);
if (likelySupportsTextureBlending)
{
break;
}
}
}
/// Inspector GUI shown in the Editor window. Base class shows z_BrushSettings by default
public override void DrawGUI(z_BrushSettings brushSettings)
{
base.DrawGUI(brushSettings);
GUILayout.Label("Paint Settings", z_GUI.headerTextStyle);
GUILayout.BeginHorizontal();
GUILayout.FlexibleSpace();
paintMode = (z_PaintMode) GUILayout.Toolbar( (int) paintMode, modeIcons, "Command", null);
GUILayout.FlexibleSpace();
GUILayout.EndHorizontal();
GUILayout.Space(4);
// GUILayout.Label( brushColor.ToString() );
// GUILayout.Label( meshAttributes.ToString("\n"));
// GUILayout.Space(4);
if(!likelySupportsTextureBlending)
EditorGUILayout.HelpBox("It doesn't look like any of the materials on this object support texture blending!\n\nSee the readme for information on creating custom texture blend shaders.", MessageType.Warning);
else
brushColor = z_SplatWeightEditor.OnInspectorGUI(brushColor, textures);
}
private void RebuildColorTargets(z_SplatWeight blend, float strength)
{
if( colors_cache == null ||
target_colors == null ||
colors_cache.Length != target_colors.Length)
return;
for(int i = 0; i < colors_cache.Length; i++)
{
target_colors[i] = z_SplatWeight.Lerp(colors_cache[i], blend, strength);
erase_colors[i] = z_SplatWeight.Lerp(colors_cache[i], z_SplatWeight.Channel0, strength);
}
}
