统一绘画精灵 [英] Painting sprite in unity
问题描述
问题:
Problem :
我想统一制造用于清洁窗户的原型(我的意思是清洁肮脏的窗户).
I want to make prototype for cleaning windows (I mean cleaning dirty windows) in unity.
我正在搜索有关此主题的内容,发现可以按Texture2D.SetPixel()
更改像素.
I was searching about this subject and finding that I can change pixel by Texture2D.SetPixel()
.
我尝试通过这种方法进行操作,首先,我启用了纹理的读/写功能,然后尝试使用此方法,但是我的精灵没有任何反应.
I try to do it by this method, First I enabled read/write of texture and try this method but nothing happened on my sprite.
所以我想问一问,是否有可能更改鼠标单击或触摸以显示下面原始图精灵的图片的alpha !!
So I want to ask it if it's possible to change alpha of the sprite that is clicked by mouse or touched to show the below sprite of original one !?
我的代码:
private RaycastHit2D hitInfo;
private SpriteRenderer spriteRendererComponent;
private Color zeroAlpha;
// Use this for initialization
void Start ()
{
spriteRendererComponent = transform.GetComponent<SpriteRenderer>();
zeroAlpha = Color.blue;
}
// Update is called once per frame
void Update () {
if (Input.GetMouseButton(0))
{
MouseClick();
}
}
public void MouseClick()
{
Vector2 mousePosition = Vector2.zero;
mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
hitInfo = Physics2D.Raycast(mousePosition, Vector2.zero);
if (hitInfo)
{
spriteRendererComponent.sprite.texture.SetPixel((int)hitInfo.point.x, (int)hitInfo.point.y, zeroAlpha);
spriteRendererComponent.sprite.texture.Apply();
}
}
答案:
Answer :
您可以将此线程用于优化精灵的变化像素
You can use this thread for Optimizing of changing pixels of sprite
我找到了有关更改精灵像素(绘画)的答案
public float radius;
public Color InitialColor;
private RaycastHit2D hitInfo;
// Use this for initialization
void Start()
{
}
// Update is called once per frame
void Update()
{
if (CustomInput.ControlStay())
{
hitInfo = CustomInput.ClickednTouched().hitInfo;
if (hitInfo)
{
UpdateTexture();
}
}
}
public Texture2D CopyTexture2D(Texture2D copiedTexture2D)
{
float differenceX;
float differenceY;
//Create a new Texture2D, which will be the copy
Texture2D texture = new Texture2D(copiedTexture2D.width, copiedTexture2D.height);
//Choose your filtermode and wrapmode
texture.filterMode = FilterMode.Bilinear;
texture.wrapMode = TextureWrapMode.Clamp;
//Center of hit point circle
int m1 = (int)((hitInfo.point.x + 2.5f) / 5 * copiedTexture2D.width);
int m2 = (int)((hitInfo.point.y + 2.5f) / 5 * copiedTexture2D.height);
for (int x = 0; x < texture.width; x++)
{
for (int y = 0; y < texture.height; y++)
{
differenceX = x - m1;
differenceY = y - m2;
//INSERT YOUR LOGIC HERE
if (differenceX * differenceX + differenceY * differenceY <= radius * radius)
{
//This line of code and if statement, turn all texture pixels within radius to zero alpha
texture.SetPixel(x, y, InitialColor);
}
else
{
//This line of code is REQUIRED. Do NOT delete it. This is what copies the image as it was, without any change
texture.SetPixel(x, y, copiedTexture2D.GetPixel(x, y));
}
}
}
//This finalizes it. If you want to edit it still, do it before you finish with Apply(). Do NOT expect to edit the image after you have applied.
texture.Apply();
return texture;
}
public void UpdateTexture()
{
SpriteRenderer mySpriteRenderer = gameObject.GetComponent<SpriteRenderer>();
Texture2D newTexture2D = CopyTexture2D(mySpriteRenderer.sprite.texture);
//Get the name of the old sprite
string tempName = mySpriteRenderer.sprite.name;
//Create a new sprite
mySpriteRenderer.sprite = Sprite.Create(newTexture2D, mySpriteRenderer.sprite.rect, new Vector2(0.5f, 0.5f));
//Name the sprite, the old name
mySpriteRenderer.sprite.name = tempName;
//Update the material
//If you have multiple sprites, you will want to do this in a loop
//mySpriteRenderer.material.mainTexture = newTexture2D;
//mySpriteRenderer.material.shader = Shader.Find("Unlit/Transparent");
}
另一个问题:
Another problem :
在精灵上查找像素:
Finding pixel on sprite :
在Unity3d中,我们有RaycastHit.textureCoord
,但在2D中不再存在.我一直在搜索这个问题,但没有发现任何有用的东西.
In Unity3d we have RaycastHit.textureCoord
but it doesn't exist anymore in 2D. I was searching about this problem, a lot but I didn't find anything useful.
所以我想知道解决该问题的方法,我想知道为什么2D中不存在像3D中的textureCoord这样的方法.
So I want to know the solution for this problem and I'm wondering why method like textureCoord in 3D doesn't exist in 2D.
答案:
Answer :
正如您在前面的代码中看到的那样,我又找到了答案,用于在精灵上查找像素.
推荐答案
检查一下!
我已修复您的脚本.适用于不同的纹理尺寸.不同的纹理位置和相机大小.需要盒子对撞机2d.
I have fixed your script. Works on different texture sizes. Different texture places and camera size. Require box collider 2d.
using UnityEngine;
using System.Collections;
public class ExampleClass : MonoBehaviour
{
public float radius;
public Color InitialColor;
private RaycastHit2D hitInfo;
// Update is called once per frame
void Update()
{
if (Input.GetMouseButton(0))
{
hitInfo = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);
if (hitInfo)
{
UpdateTexture();
}
}
if (Input.GetMouseButtonUp(0))
{
Resources.UnloadUnusedAssets();
}
}
public Texture2D CopyTexture2D(Texture2D copiedTexture2D)
{
float differenceX;
float differenceY;
//Create a new Texture2D, which will be the copy
Texture2D texture = new Texture2D(copiedTexture2D.width, copiedTexture2D.height);
//Choose your filtermode and wrapmode
texture.filterMode = FilterMode.Bilinear;
texture.wrapMode = TextureWrapMode.Clamp;
//Center of hit point circle
int m1 = (int)((hitInfo.point.x - hitInfo.collider.bounds.min.x) * (copiedTexture2D.width / hitInfo.collider.bounds.size.x));
int m2 = (int)((hitInfo.point.y - hitInfo.collider.bounds.min.y) * (copiedTexture2D.height / hitInfo.collider.bounds.size.y));
//Vector2 extremeScreenPoint = Camera.main.ScreenToWorldPoint(new Vector2(0, 0));
//Debug.Log("extremeScreenPoint= " + extremeScreenPoint.x
// + " hitInfo.point.x =" + hitInfo.point.x
// //+ " mousePosition =" + Camera.main.ScreenToWorldPoint(Input.mousePosition).x
// + " bounds.min =" + hitInfo.collider.bounds.min .x
// + " bounds.max =" + hitInfo.collider.bounds.max .x
// + " size =" + hitInfo.collider.bounds.size.x
// + " hit =" + (hitInfo.point.x - hitInfo.collider.bounds.min.x)
// + " pixels =" + (hitInfo.point.x - hitInfo.collider.bounds.min.x) * (copiedTexture2D.width / hitInfo.collider.bounds.size.x)
// );
for (int x = 0; x < texture.width; x++)
{
for (int y = 0; y < texture.height; y++)
{
differenceX = x - m1;
differenceY = y - m2;
//INSERT YOUR LOGIC HERE
if (differenceX * differenceX + differenceY * differenceY <= radius * radius)
{
//This line of code and if statement, turn all texture pixels within radius to zero alpha
texture.SetPixel(x, y, InitialColor);
}
else
{
//This line of code is REQUIRED. Do NOT delete it. This is what copies the image as it was, without any change
texture.SetPixel(x, y, copiedTexture2D.GetPixel(x, y));
}
}
}
//This finalizes it. If you want to edit it still, do it before you finish with Apply(). Do NOT expect to edit the image after you have applied.
texture.Apply();
//DestroyImmediate(copiedTexture2D, true);
return texture;
}
public void UpdateTexture()
{
SpriteRenderer mySpriteRenderer = gameObject.GetComponent<SpriteRenderer>();
Texture2D newTexture2D = CopyTexture2D(mySpriteRenderer.sprite.texture);
//Get the name of the old sprite
string tempName = mySpriteRenderer.sprite.name;
//Create a new sprite
mySpriteRenderer.sprite = Sprite.Create(newTexture2D, mySpriteRenderer.sprite.rect, new Vector2(0.5f, 0.5f));
//Name the sprite, the old name
mySpriteRenderer.sprite.name = tempName;
//Update the material
//If you have multiple sprites, you will want to do this in a loop
//mySpriteRenderer.material.mainTexture = newTexture2D;
//mySpriteRenderer.material.shader = Shader.Find("Unlit/Transparent");
}
}
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