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Drawing Canvas
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| using System.Collections; | |
| using System.IO; | |
| using UnityEngine; | |
| using UnityEngine.InputSystem; | |
| public class SignatureCapture : MonoBehaviour | |
| { | |
| [SerializeField] private GameObject brushPrefab; | |
| [SerializeField] private float brushSize = 0.1f; | |
| [SerializeField] private RenderTexture renderTexture; | |
| private Camera mainCamera; | |
| private InputAction drawAction; | |
| private InputAction touchPositionAction; | |
| // Initialization | |
| private void Awake() | |
| { | |
| mainCamera = Camera.main; | |
| // Set up the new Input System | |
| drawAction = new InputAction("Draw", InputActionType.Value, "<Pointer>/press"); | |
| touchPositionAction = new InputAction("Position", InputActionType.Value, "<Pointer>/position"); | |
| drawAction.Enable(); | |
| touchPositionAction.Enable(); | |
| } | |
| private void OnEnable() | |
| { | |
| if (drawAction != null) | |
| { | |
| drawAction.Enable(); | |
| } | |
| if (touchPositionAction != null) | |
| { | |
| touchPositionAction.Enable(); | |
| } | |
| } | |
| private void OnDisable() | |
| { | |
| if (drawAction != null) | |
| { | |
| drawAction.Disable(); | |
| } | |
| if (touchPositionAction != null) | |
| { | |
| touchPositionAction.Disable(); | |
| } | |
| } | |
| // Update is called once per frame | |
| private void Update() | |
| { | |
| DrawWithBrush(); | |
| } | |
| // Draw with the brush when the left mouse button is pressed or touch input is detected | |
| private void DrawWithBrush() | |
| { | |
| if (drawAction.ReadValue<float>() > 0) | |
| { | |
| Vector2 screenPosition = touchPositionAction.ReadValue<Vector2>(); | |
| Ray ray = mainCamera.ScreenPointToRay(screenPosition); | |
| RaycastHit hit; | |
| if (Physics.Raycast(ray, out hit)) | |
| { | |
| // Instantiate a brush | |
| GameObject brushInstance = Instantiate(brushPrefab, hit.point + Vector3.up * 0.1f, Quaternion.identity, transform); | |
| brushInstance.transform.localScale = Vector3.one * brushSize; | |
| } | |
| } | |
| } | |
| // Save the signature as an image | |
| public void Save() | |
| { | |
| StartCoroutine(SaveCoroutine()); | |
| } | |
| private IEnumerator SaveCoroutine() | |
| { | |
| // Wait for rendering | |
| yield return new WaitForEndOfFrame(); | |
| string filePath = Path.Combine(Application.dataPath, "savedSignature.png"); | |
| Debug.Log($"Saving signature to {filePath}"); | |
| // Set active texture | |
| RenderTexture.active = renderTexture; | |
| // Convert RenderTexture to Texture2D | |
| Texture2D texture2D = new Texture2D(renderTexture.width, renderTexture.height); | |
| texture2D.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0); | |
| texture2D.Apply(); | |
| // Write data to file | |
| byte[] imageData = texture2D.EncodeToPNG(); | |
| File.WriteAllBytes(filePath, imageData); | |
| // Reset active texture | |
| RenderTexture.active = null; | |
| } | |
| } |
this script at this time is untested but looks usable to me.
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Changes made via ChatGPT GPT-4. here is the notes it gave between 2 updated version I generated.
Added using UnityEngine.InputSystem; to use the new Input System.
Created an InputAction called drawAction in the Awake method to handle drawing input.
Enabled the drawAction in the OnEnable method and disabled it in the OnDisable method.
Replaced the old input check in DrawWithBrush with the new Input System drawAction.ReadValue() > 0.
Replaced the old mouse position in DrawWithBrush with the new Input System Mouse.current.position.ReadValue().
then
Added a new InputAction called touchPositionAction to handle touch positions.
Enabled and disabled the touchPositionAction in OnEnable and OnDisable methods, respectively.
Replaced the mouse position input in the DrawWithBrush method with the touchPositionAction.ReadValue().