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0

I am trying to use Python to send images to Unity C# where I want to display the images overlayed on the current display (for every frame).
I am currently using zmq to receive a byte array of a PNG image from python into Unity.
The image is in the form of a numpy array of shape 256x256x4. Using the function np.tobytes, the length of the message is 2097152 which is larger than (256x256x4)

Once the message is sent to Unity, I am attempting to get a colour array from the byte array to use Texture2D.readPixels32() using the following code snippet.

var colorArray = new Color32[message.Length/4];
for(var i = 0; i < message.Length; i+=4)

 var color = new Color32(message[i + 0], message[i + 1], message[i + 2], message[i + 3]);
 colorArray[i/4] = color;

Texture2D tex2new=new Texture2D(Screen.width,Screen.height);
print (Screen.height + " " + Screen.width + " " + colorArray.Length);
tex2new.SetPixels32(colorArray);

The error is SetPixels32 called with invalid number of pixels in the array
UnityEngine.Texture2D:SetPixels32(Color32[])
How do I read the byte array into a texture?
Is there a better way to display the byte array once the game is played in Unity in real-time?

c# python sockets unity3d textures

share|improve this question

edited Mar 23 at 10:38

ingvar

2,0751718

asked Mar 23 at 8:58

YellowMuffinsAndSprinklesYellowMuffinsAndSprinkles

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  how do you read the png image in python? and could you show the result of print
  
  – Frenchy
  Mar 23 at 11:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  If you want to convert a 1d into a 2darray- cant test this right now but ive made similar things like this: // to get the index of and x and y coord int index = x + (y * w); or y + (x * w) // // to get the x and y of an index int x = index % w; int y = Round((index / w) - 1); // im no sure about this right now !? where w is the x and y length of the 2d array. That works if the 2darray has the same x and y length. Im not sure if that is what you need.
  
  – user11220832
  Mar 23 at 13:40
  

  
  
  
  

add a comment | 

0

I am trying to use Python to send images to Unity C# where I want to display the images overlayed on the current display (for every frame).
I am currently using zmq to receive a byte array of a PNG image from python into Unity.
The image is in the form of a numpy array of shape 256x256x4. Using the function np.tobytes, the length of the message is 2097152 which is larger than (256x256x4)

Once the message is sent to Unity, I am attempting to get a colour array from the byte array to use Texture2D.readPixels32() using the following code snippet.

var colorArray = new Color32[message.Length/4];
for(var i = 0; i < message.Length; i+=4)

 var color = new Color32(message[i + 0], message[i + 1], message[i + 2], message[i + 3]);
 colorArray[i/4] = color;

Texture2D tex2new=new Texture2D(Screen.width,Screen.height);
print (Screen.height + " " + Screen.width + " " + colorArray.Length);
tex2new.SetPixels32(colorArray);

The error is SetPixels32 called with invalid number of pixels in the array
UnityEngine.Texture2D:SetPixels32(Color32[])
How do I read the byte array into a texture?
Is there a better way to display the byte array once the game is played in Unity in real-time?

c# python sockets unity3d textures

share|improve this question

edited Mar 23 at 10:38

ingvar

2,0751718

asked Mar 23 at 8:58

YellowMuffinsAndSprinklesYellowMuffinsAndSprinkles

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  how do you read the png image in python? and could you show the result of print
  
  – Frenchy
  Mar 23 at 11:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  If you want to convert a 1d into a 2darray- cant test this right now but ive made similar things like this: // to get the index of and x and y coord int index = x + (y * w); or y + (x * w) // // to get the x and y of an index int x = index % w; int y = Round((index / w) - 1); // im no sure about this right now !? where w is the x and y length of the 2d array. That works if the 2darray has the same x and y length. Im not sure if that is what you need.
  
  – user11220832
  Mar 23 at 13:40
  

  
  
  
  

add a comment | 

I am trying to use Python to send images to Unity C# where I want to display the images overlayed on the current display (for every frame).
I am currently using zmq to receive a byte array of a PNG image from python into Unity.
The image is in the form of a numpy array of shape 256x256x4. Using the function np.tobytes, the length of the message is 2097152 which is larger than (256x256x4)

Once the message is sent to Unity, I am attempting to get a colour array from the byte array to use Texture2D.readPixels32() using the following code snippet.

var colorArray = new Color32[message.Length/4];
for(var i = 0; i < message.Length; i+=4)

 var color = new Color32(message[i + 0], message[i + 1], message[i + 2], message[i + 3]);
 colorArray[i/4] = color;

Texture2D tex2new=new Texture2D(Screen.width,Screen.height);
print (Screen.height + " " + Screen.width + " " + colorArray.Length);
tex2new.SetPixels32(colorArray);

The error is SetPixels32 called with invalid number of pixels in the array
UnityEngine.Texture2D:SetPixels32(Color32[])
How do I read the byte array into a texture?
Is there a better way to display the byte array once the game is played in Unity in real-time?

c# python sockets unity3d textures

share|improve this question

edited Mar 23 at 10:38

ingvar

2,0751718

asked Mar 23 at 8:58

YellowMuffinsAndSprinklesYellowMuffinsAndSprinkles

1

var colorArray = new Color32[message.Length/4];
for(var i = 0; i < message.Length; i+=4)

 var color = new Color32(message[i + 0], message[i + 1], message[i + 2], message[i + 3]);
 colorArray[i/4] = color;

Texture2D tex2new=new Texture2D(Screen.width,Screen.height);
print (Screen.height + " " + Screen.width + " " + colorArray.Length);
tex2new.SetPixels32(colorArray);

share|improve this question

edited Mar 23 at 10:38

ingvar

2,0751718

asked Mar 23 at 8:58

YellowMuffinsAndSprinklesYellowMuffinsAndSprinkles

1

share|improve this question

edited Mar 23 at 10:38

ingvar

2,0751718

asked Mar 23 at 8:58

YellowMuffinsAndSprinklesYellowMuffinsAndSprinkles

1

edited Mar 23 at 10:38

ingvar

2,0751718

edited Mar 23 at 10:38

ingvar

2,0751718

asked Mar 23 at 8:58

YellowMuffinsAndSprinklesYellowMuffinsAndSprinkles

1

asked Mar 23 at 8:58

YellowMuffinsAndSprinklesYellowMuffinsAndSprinkles

1