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UIDocumentWorldSpace.cs
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UIDocumentWorldSpace.cs
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using System;
using UnityEngine;
using UnityEngine.UIElements;
//Author: github.com/BAPCon
[ExecuteInEditMode]
public class UIDocumentWorldSpace : MonoBehaviour
{
public enum VerHor
{
Vertical,
Horizontal
}
//Inspector Variables
[Space(10, order = 0)]
[Header("Document", order = 1)]
//Document settings
[SerializeField] VisualTreeAsset treeAsset;
[SerializeField] PanelSettings panelSettings;
public int sortOrder = 0;
[Space(10, order = 2)]
[Header("Transform Settings", order = 3)]
//Scale/size settings
public Camera targetCamera;
public VerHor referenceDimension;
public float unitSize;
[Space(10, order = 4)]
[Header("Draw In Editor", order = 5)]
[SerializeField] bool drawInEditor;
//=================
UIDocument document;
VisualElement panelElement;
PanelSettings instanceSettings;
PanelSettings lastPanelSettings;
string hashString;
VerHor LastRefDimension;
Vector3 lastScale;
float lastUnitSize;
float refDimensionOrthoSize;
float refDimensionMax;
float refDimensionValue;
int panelScaleValue;
bool runTest = false;
bool validate = false;
private void Start()
{
hashString = GetHashString();
}
/// <summary>
/// Updates instance PanelSettings to scale with reference unit size, camera orthographic size, local scale, and panel dimensions.
/// </summary>
void SetScaleByRef()
{
//Set scale by reference to unit size
instanceSettings.scaleMode = PanelScaleMode.ScaleWithScreenSize;
//Vertical Scale
if (referenceDimension == VerHor.Vertical)
{
refDimensionOrthoSize = targetCamera.orthographicSize * 2f;
refDimensionValue = panelElement.resolvedStyle.height;
//Match vertical
instanceSettings.match = 1f;
}
//Horizontal Scale
else
{
refDimensionOrthoSize = targetCamera.orthographicSize * 2f * targetCamera.aspect;
refDimensionValue = panelElement.resolvedStyle.width;
//Match horizontal
instanceSettings.match = 0f;
}
//Modify resolution of PanelSettings instance
refDimensionMax = refDimensionOrthoSize * refDimensionValue;
panelScaleValue = Mathf.RoundToInt(refDimensionMax / (unitSize * transform.localScale.z));
instanceSettings.referenceResolution = new Vector2Int(panelScaleValue, panelScaleValue);
}
/// <summary>
/// Draws bounding box for panel using Debug.Line, taking into account rotation.
/// </summary>
void DrawDimensions()
{
//Get aspect ratio of panel dimensions, set width/height
float panelAspect = panelElement.resolvedStyle.width / panelElement.resolvedStyle.height;
float x = unitSize * transform.localScale.z;
float y = x;
// X = Y * Aspect ratio, Y = X / Aspect ratio
if (referenceDimension == VerHor.Horizontal)
y /= panelAspect;
else
x *= panelAspect;
//Get rotation, clamp/mod between 0 and 360
float offsetX = transform.position.x; //TO-DO (anchorPoint.x * (x / 2f) * -1f) + transform.position.x;
float offsetY = transform.position.y; //TO-DO (anchorPoint.y * (y / 2f) * -1f) + transform.position.y;
//Half of full width/height + direction (via +/-)
float tlX = -(x / 2f) + offsetX;
float tlY = (y / 2f) + offsetY;
float blX = -(x / 2f) + offsetX;
float blY = -(y / 2f) + offsetY;
float trX = (x / 2f) + offsetX;
float trY = (y / 2f) + offsetY;
float brX = (x / 2f) + offsetX;
float brY = -(y / 2f) + offsetY;
//Each corner position is (Rotation * the direction (corner - center)) + transform.position
//Draw debug lines between each corner, and between each corner and center
Debug.DrawLine(transform.position, (transform.rotation * (new Vector3(tlX, tlY, 0f) - transform.position)) + transform.position, Color.blue, Time.deltaTime);
Debug.DrawLine(transform.position, (transform.rotation * (new Vector3(trX, trY, 0f) - transform.position)) + transform.position, Color.blue, Time.deltaTime);
Debug.DrawLine(transform.position, (transform.rotation * (new Vector3(blX, blY, 0f) - transform.position)) + transform.position, Color.blue, Time.deltaTime);
Debug.DrawLine(transform.position, (transform.rotation * (new Vector3(brX, brY, 0f) - transform.position)) + transform.position, Color.blue, Time.deltaTime);
Debug.DrawLine(
(transform.rotation * (new Vector3(tlX, tlY, 0f) - transform.position)) + transform.position,
(transform.rotation * (new Vector3(blX, blY, 0f) - transform.position)) + transform.position,
Color.red, Time.deltaTime
);
Debug.DrawLine(
(transform.rotation * (new Vector3(brX, brY, 0f) - transform.position)) + transform.position,
(transform.rotation * (new Vector3(blX, blY, 0f) - transform.position)) + transform.position,
Color.red, Time.deltaTime
);
Debug.DrawLine(
(transform.rotation * (new Vector3(brX, brY, 0f) - transform.position)) + transform.position,
(transform.rotation * (new Vector3(trX, trY, 0f) - transform.position)) + transform.position,
Color.red, Time.deltaTime
);
Debug.DrawLine(
(transform.rotation * (new Vector3(tlX, tlY, 0f) - transform.position)) + transform.position,
(transform.rotation * (new Vector3(trX, trY, 0f) - transform.position)) + transform.position,
Color.red, Time.deltaTime
);
}
/// <summary>
/// Updates position and scale in relation to reference settings.
/// </summary>
private void UpdateTransform()
{
SetPosition();
SetScaleByRef();
}
/// <summary>
/// Updates position and scale in relation to reference settings.
/// </summary>
/// <returns>Returns a string of the combined hashes from required components/variables</returns>
string GetHashString()
{
string hashstr = "";
if (treeAsset != null) hashstr += treeAsset.GetHashCode().ToString();
else hashstr += "nullTA";
if (panelSettings != null) hashstr += panelSettings.GetHashCode().ToString();
else hashstr += "nullPS";
hashstr += sortOrder.ToString();
return hashstr;
}
/// <summary>
/// Checks if the desired scale, reference unit size, or reference dimension has been changed.
/// </summary>
/// <returns>Returns true if any of the checked values has changed.</returns>
bool ScaleChanged()
{
bool haschanged = lastScale != transform.localScale;
haschanged = haschanged || lastUnitSize != unitSize;
haschanged = haschanged || LastRefDimension != referenceDimension;
if (haschanged)
{
lastScale = transform.localScale;
lastUnitSize = unitSize;
LastRefDimension = referenceDimension;
}
return haschanged;
}
/// <summary>
/// Checks if the combined hash string for the panel/settings/components has changed.
/// </summary>
/// <returns>Returns true if any of the checked values has changed.</returns>
bool SettingsChanged()
{
string currentHashString = GetHashString();
if (hashString != currentHashString)
{
hashString = currentHashString;
return true;
}
return false;
}
/// <summary>
/// Initializes member objects/components and manages existing components/initiated components.
/// </summary>
void InitializeMembers()
{
UIDocument lastDocument = null;
if (targetCamera == null)
{
targetCamera = Camera.main;
}
if (document != null)
{
lastDocument = document;
}
else
{
if (GetComponent<UIDocument>() != null)
{
DestroyImmediate(GetComponent<UIDocument>());
}
document = gameObject.AddComponent<UIDocument>();
document.hideFlags = HideFlags.HideInInspector;
}
if (instanceSettings == null || document.visualTreeAsset == null)
{
instanceSettings = PanelSettings.Instantiate<PanelSettings>(panelSettings);
document.visualTreeAsset = treeAsset;
document.sortingOrder = sortOrder;
document.panelSettings = instanceSettings;
}
if (panelElement == null || panelElement.panel == null)
{
try
{
panelElement = GetComponent<UIDocument>().rootVisualElement.Q("Container");
}
catch
{
panelElement = GetComponent<UIDocument>().rootVisualElement;
}
}
UpdateTransform();
}
/// <summary>
/// Updates the panel element's position and rotation in relation to attached gameObject.
/// </summary>
public void SetPosition()
{
Vector2 newPosition = RuntimePanelUtils.CameraTransformWorldToPanel(
panelElement.panel,
transform.position,
targetCamera
);
newPosition.x = (newPosition.x - panelElement.layout.width / 2);
newPosition.y = (newPosition.y - panelElement.layout.height / 2);
panelElement.transform.position = newPosition;
panelElement.transform.rotation = transform.rotation;
}
void OnValidate()
{
validate = true;
}
private void LateUpdate()
{
if (treeAsset != null && panelSettings != null)
{
try
{
if (SettingsChanged() || ScaleChanged() || validate)
{
InitializeMembers();
validate = false;
}
SetScaleByRef();
UpdateTransform();
if (drawInEditor) DrawDimensions();
}
catch (Exception e)
{
Debug.LogWarning(e.ToString());
InitializeMembers();
}
}
}
}