void DrawBoxTransformationHandles(DecalProjector decalProjector)
{
using (new Handles.DrawingScope(fullColor, Matrix4x4.TRS(decalProjector.transform.position, decalProjector.transform.rotation, Vector3.one)))
{
Vector3 centerStart = decalProjector.pivot;
boxHandle.center = centerStart;
boxHandle.size = decalProjector.size;
Vector3 boundsSizePreviousOS = boxHandle.size;
Vector3 boundsMinPreviousOS = boxHandle.size * -0.5f + boxHandle.center;
EditorGUI.BeginChangeCheck();
boxHandle.DrawHandle();
if (EditorGUI.EndChangeCheck())
{
// Adjust decal transform if handle changed.
Undo.RecordObject(decalProjector, "Decal Projector Change");
decalProjector.size = boxHandle.size;
decalProjector.pivot += boxHandle.center - centerStart;
Vector3 boundsSizeCurrentOS = boxHandle.size;
Vector3 boundsMinCurrentOS = boxHandle.size * -0.5f + boxHandle.center;
if (editMode == k_EditShapePreservingUV)
{
// Treat decal projector bounds as a crop tool, rather than a scale tool.
// Compute a new uv scale and bias terms to pin decal projection pixels in world space, irrespective of projector bounds.
Vector2 uvScale = decalProjector.uvScale;
uvScale.x *= Mathf.Max(1e-5f, boundsSizeCurrentOS.x) / Mathf.Max(1e-5f, boundsSizePreviousOS.x);
uvScale.y *= Mathf.Max(1e-5f, boundsSizeCurrentOS.y) / Mathf.Max(1e-5f, boundsSizePreviousOS.y);
decalProjector.uvScale = uvScale;
Vector2 uvBias = decalProjector.uvBias;
uvBias.x += (boundsMinCurrentOS.x - boundsMinPreviousOS.x) / Mathf.Max(1e-5f, boundsSizeCurrentOS.x) * decalProjector.uvScale.x;
uvBias.y += (boundsMinCurrentOS.y - boundsMinPreviousOS.y) / Mathf.Max(1e-5f, boundsSizeCurrentOS.y) * decalProjector.uvScale.y;
decalProjector.uvBias = uvBias;
}
if (PrefabUtility.IsPartOfNonAssetPrefabInstance(decalProjector))
{
PrefabUtility.RecordPrefabInstancePropertyModifications(decalProjector);
}
// Smoothly update the decal image projected
DecalSystem.instance.UpdateCachedData(decalProjector.Handle, decalProjector.GetCachedDecalData());
}
}
}
void DrawHandles()
{
//Note: each target need to be handled individually to allow multi edition
DecalProjector decalProjector = target as DecalProjector;
if (editMode == k_EditShapePreservingUV || editMode == k_EditShapeWithoutPreservingUV)
{
using (new Handles.DrawingScope(Color.white, Matrix4x4.TRS(decalProjector.transform.position, decalProjector.transform.rotation, Vector3.one)))
{
bool needToRefreshDecalProjector = false;
handle.center = decalProjector.offset;
handle.size = decalProjector.size;
Vector3 boundsSizePreviousOS = handle.size;
Vector3 boundsMinPreviousOS = handle.size * -0.5f + handle.center;
EditorGUI.BeginChangeCheck();
handle.DrawHandle();
if (EditorGUI.EndChangeCheck())
{
needToRefreshDecalProjector = true;
// Adjust decal transform if handle changed.
Undo.RecordObject(decalProjector, "Decal Projector Change");
decalProjector.size = handle.size;
decalProjector.offset = handle.center;
Vector3 boundsSizeCurrentOS = handle.size;
Vector3 boundsMinCurrentOS = handle.size * -0.5f + handle.center;
if (editMode == k_EditShapePreservingUV)
{
// Treat decal projector bounds as a crop tool, rather than a scale tool.
// Compute a new uv scale and bias terms to pin decal projection pixels in world space, irrespective of projector bounds.
Vector2 uvScale = decalProjector.uvScale;
uvScale.x *= Mathf.Max(1e-5f, boundsSizeCurrentOS.x) / Mathf.Max(1e-5f, boundsSizePreviousOS.x);
uvScale.y *= Mathf.Max(1e-5f, boundsSizeCurrentOS.y) / Mathf.Max(1e-5f, boundsSizePreviousOS.y);
decalProjector.uvScale = uvScale;
Vector2 uvBias = decalProjector.uvBias;
uvBias.x += (boundsMinCurrentOS.x - boundsMinPreviousOS.x) / Mathf.Max(1e-5f, boundsSizeCurrentOS.x) * decalProjector.uvScale.x;
uvBias.y += (boundsMinCurrentOS.y - boundsMinPreviousOS.y) / Mathf.Max(1e-5f, boundsSizeCurrentOS.y) * decalProjector.uvScale.y;
decalProjector.uvBias = uvBias;
}
if (PrefabUtility.IsPartOfNonAssetPrefabInstance(decalProjector))
{
PrefabUtility.RecordPrefabInstancePropertyModifications(decalProjector);
}
}
// Automatically recenter our transform component if necessary.
// In order to correctly handle world-space snapping, we only perform this recentering when the user is no longer interacting with the gizmo.
if ((GUIUtility.hotControl == 0) && (decalProjector.offset != Vector3.zero))
{
needToRefreshDecalProjector = true;
// Both the DecalProjectorComponent, and the transform will be modified.
// The undo system will automatically group all RecordObject() calls here into a single action.
Undo.RecordObject(decalProjector.transform, "Decal Projector Change");
// Re-center the transform to the center of the decal projector bounds,
// while maintaining the world-space coordinates of the decal projector boundings vertices.
// Center of the decal projector is not the same of the HierarchicalBox as we want it to be on the z face as lights
decalProjector.transform.Translate(decalProjector.offset + new Vector3(0f, 0f, handle.size.z * -0.5f), Space.Self);
decalProjector.offset = new Vector3(0f, 0f, handle.size.z * 0.5f);
if (PrefabUtility.IsPartOfNonAssetPrefabInstance(decalProjector))
{
PrefabUtility.RecordPrefabInstancePropertyModifications(decalProjector);
}
}
if (needToRefreshDecalProjector)
{
// Smoothly update the decal image projected
DecalSystem.instance.UpdateCachedData(decalProjector.Handle, decalProjector.GetCachedDecalData());
}
}
}
//[TODO: add editable pivot. Uncomment this when ready]
//else if (editMode == k_EditUV)
//{
// //here should be handles code to manipulate the pivot without changing the UV
//}
}
void DrawBoxTransformationHandles(DecalProjector decalProjector)
{
Vector3 scale = decalProjector.effectiveScale;
using (new Handles.DrawingScope(fullColor, Matrix4x4.TRS(decalProjector.transform.position, decalProjector.transform.rotation, scale)))
{
Vector3 centerStart = decalProjector.pivot;
boxHandle.center = centerStart;
boxHandle.size = decalProjector.size;
Vector3 boundsSizePreviousOS = boxHandle.size;
Vector3 boundsMinPreviousOS = boxHandle.size * -0.5f + boxHandle.center;
EditorGUI.BeginChangeCheck();
boxHandle.DrawHandle();
if (EditorGUI.EndChangeCheck())
{
// Adjust decal transform if handle changed.
Undo.RecordObject(decalProjector, "Decal Projector Change");
bool xChangeIsValid = scale.x != 0f;
bool yChangeIsValid = scale.y != 0f;
bool zChangeIsValid = scale.z != 0f;
// Preserve serialized state for axes with scale 0.
decalProjector.size = new Vector3(
xChangeIsValid ? boxHandle.size.x : decalProjector.size.x,
yChangeIsValid ? boxHandle.size.y : decalProjector.size.y,
zChangeIsValid ? boxHandle.size.z : decalProjector.size.z);
decalProjector.pivot = new Vector3(
xChangeIsValid ? boxHandle.center.x : decalProjector.pivot.x,
yChangeIsValid ? boxHandle.center.y : decalProjector.pivot.y,
zChangeIsValid ? boxHandle.center.z : decalProjector.pivot.z);
Vector3 boundsSizeCurrentOS = boxHandle.size;
Vector3 boundsMinCurrentOS = boxHandle.size * -0.5f + boxHandle.center;
if (editMode == k_EditShapePreservingUV)
{
// Treat decal projector bounds as a crop tool, rather than a scale tool.
// Compute a new uv scale and bias terms to pin decal projection pixels in world space, irrespective of projector bounds.
// Preserve serialized state for axes with scale 0.
Vector2 uvScale = decalProjector.uvScale;
Vector2 uvBias = decalProjector.uvBias;
if (xChangeIsValid)
{
uvScale.x *= Mathf.Max(k_LimitInv, boundsSizeCurrentOS.x) / Mathf.Max(k_LimitInv, boundsSizePreviousOS.x);
uvBias.x += (boundsMinCurrentOS.x - boundsMinPreviousOS.x) / Mathf.Max(k_LimitInv, boundsSizeCurrentOS.x) * uvScale.x;
}
if (yChangeIsValid)
{
uvScale.y *= Mathf.Max(k_LimitInv, boundsSizeCurrentOS.y) / Mathf.Max(k_LimitInv, boundsSizePreviousOS.y);
uvBias.y += (boundsMinCurrentOS.y - boundsMinPreviousOS.y) / Mathf.Max(k_LimitInv, boundsSizeCurrentOS.y) * uvScale.y;
}
decalProjector.uvScale = uvScale;
decalProjector.uvBias = uvBias;
}
if (PrefabUtility.IsPartOfNonAssetPrefabInstance(decalProjector))
{
PrefabUtility.RecordPrefabInstancePropertyModifications(decalProjector);
}
// Smoothly update the decal image projected
DecalSystem.instance.UpdateCachedData(decalProjector.Handle, decalProjector.GetCachedDecalData());
}
}
}