Возможно проблема в настройках проекта.
Вот скрипт:
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Paint : MonoBehaviour
{
[Range(2, 2048)]
[SerializeField] private int _textureSize = 2048;
[SerializeField] private TextureWrapMode _textureWrapMode;
[SerializeField] private FilterMode _filterMode;
[SerializeField] private Texture2D _texture;
[SerializeField] private Material _material;
[SerializeField] private Camera _camera;
[SerializeField] private Collider _collider;
[SerializeField] private Color _color;
[SerializeField] private Color _color1;
[SerializeField] private Color _color2;
[SerializeField] private int _brushSize = 8;
private int _oldRayX, _oldRayY;
private void Start()
{
OnValidate();
}
void OnValidate()
{
if (_texture == null)
{
_texture = new Texture2D(_textureSize, _textureSize);
Color fillColor = _color2;
Color[] fillPixels = new Color[_texture.width * _texture.height];
for (int i = 0; i < fillPixels.Length; i++)
{
fillPixels[i] = fillColor;
}
_texture.SetPixels(fillPixels);
}
if (_texture.width != _textureSize)
{
_texture.Resize(_textureSize, _textureSize);
}
_texture.wrapMode = _textureWrapMode;
_texture.filterMode = _filterMode;
_material.mainTexture = _texture;
_texture.Apply();
_material.mainTexture = _texture;
}
private void Update()
{
_brushSize += (int)Input.mouseScrollDelta.y;
if (Input.GetMouseButton(0))
{
_brushSize = 16;
Ray ray = _camera.ScreenPointToRay(Input.mousePosition);
RaycastHit hit;
if (_collider.Raycast(ray, out hit, 100f))
{
int rayX = (int)(hit.textureCoord.x * _textureSize);
int rayY = (int)(hit.textureCoord.y * _textureSize);
if (_oldRayX != rayX || _oldRayY != rayY)
{
//DrawQuad(rayX, rayY);
DrawCircle(rayX, rayY);
_oldRayX = rayX;
_oldRayY = rayY;
}
_texture.Apply();
}
}
if (Input.GetMouseButton(2))
{
_brushSize = 120;
_brushSize += (int)Input.mouseScrollDelta.y;
Ray ray = _camera.ScreenPointToRay(Input.mousePosition);
RaycastHit hit;
if (_collider.Raycast(ray, out hit, 100f))
{
int rayX = (int)(hit.textureCoord.x * _textureSize);
int rayY = (int)(hit.textureCoord.y * _textureSize);
if (_oldRayX != rayX || _oldRayY != rayY)
{
//DrawQuad(rayX, rayY);
ClearCircle(rayX, rayY);
_oldRayX = rayX;
_oldRayY = rayY;
}
_texture.Apply();
}
}
}
void DrawQuad(int rayX, int rayY)
{
for (int y = 0; y < _brushSize; y++)
{
for (int x = 0; x < _brushSize; x++)
{
_texture.SetPixel(rayX + x - _brushSize / 2, rayY + y - _brushSize / 2, _color);
_texture.Apply();
}
}
}
void DrawCircle(int rayX, int rayY)
{
for (int y = 0; y < _brushSize; y++)
{
for (int x = 0; x < _brushSize; x++)
{
float x2 = Mathf.Pow(x - _brushSize / 2, 2);
float y2 = Mathf.Pow(y - _brushSize / 2, 2);
float r2 = Mathf.Pow(_brushSize / 2 - 0.5f, 2);
if (x2 + y2 < r2)
{
int pixelX = rayX + x - _brushSize / 2;
int pixelY = rayY + y - _brushSize / 2;
if (pixelX >= 0 && pixelX < _textureSize && pixelY >= 0 && pixelY < _textureSize)
{
Color oldColor = _texture.GetPixel(pixelX, pixelY);
Color resultColor = Color.Lerp(oldColor, _color, _color.a);
_texture.SetPixel(pixelX, pixelY, resultColor);
}
}
}
}
}
void ClearCircle(int rayX, int rayY)
{
for (int y = 0; y < _brushSize; y++)
{
for (int x = 0; x < _brushSize; x++)
{
float x2 = Mathf.Pow(x - _brushSize / 2, 2);
float y2 = Mathf.Pow(y - _brushSize / 2, 2);
float r2 = Mathf.Pow(_brushSize / 2 - 0.5f, 2);
if (x2 + y2 < r2)
{
int pixelX = rayX + x - _brushSize / 2;
int pixelY = rayY + y - _brushSize / 2;
if (pixelX >= 0 && pixelX < _textureSize && pixelY >= 0 && pixelY < _textureSize)
{
Color oldColor = _texture.GetPixel(pixelX, pixelY);
Color resultColor = Color.Lerp(oldColor, _color1, _color1.a);
_texture.SetPixel(pixelX, pixelY, resultColor);
}
}
}
}
}
}
