Displaying a Picture via Link

Unity Engine
1

So, does unity have anyway to have a picture on the internet display through a link?
For example link a picture of someone’s Facebook profile pic.

2

You can use the WWW class to load textures

3

Here’s an example of exactly that:

4

So far I’ve been unsuccessful. No picture shows up. I am using a GUI box and passing the texture in if that makes a difference.

5

post your script

6

// I call this at Start()
IEnumerator webImage()
{
string url = “http://images.earthcam.com/ec_metros/ourcams/fridays.jpg”;
WWW www = new WWW(url);
yield return www.texture;
www.LoadImageIntoTexture(tempTex);
}

// In my OnGui()
void OnGUI()
// I’m leaving out bits of code like rRect assignment
GUI.Label(rRect, tempTex);
}

7

Thinking if over, not sure if this will be most efficient approach. What I’m needing to do is have a list of a persons friends on Facebook, but I’m not sure how fast linking to their profile pic will be.

For now though I just need to get this www image working.

8

I would suggest starting by using the example straight from the script reference, then put that texture into a gui label to make sure that works, then load a different texture… One thing at a time to see what’s not happening. Also, put in some “print” statements for debugging so you can follow what is / is not happening in there.

9 
using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

	private string url = "http://images.earthcam.com/ec_metros/ourcams/fridays.jpg";
	private WWW w;
	private Texture2D t2d;
	
	IEnumerator Start () {
		w = new WWW (url);
		yield return w;
		t2d = w.texture;
	}
	
	// Update is called once per frame
	void OnGUI () {
		GUILayout.Label (t2d);
	}
}

works fine

10

Works in the start, but not the function I made… what the hell…
Can it not be called anytime in the program or something?
Cause calling at the start won’t work for what I need to do.

11

sure it can

12

How? It won’t work for mine and I’m doing the exact same thing I’m doing in the function that I did in the start.

13 
using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

	private string url = "http://images.earthcam.com/ec_metros/ourcams/fridays.jpg";
	private WWW w;
	private Texture2D t2d;

	IEnumerator GetPic () {
		w = new WWW (url);
		yield return w;
		t2d = w.texture;
	}
	
	void OnGUI () {
		if (GUILayout.Button ("Get pic")) {
			StartCoroutine("GetPic");
		}
		GUILayout.Label (t2d);
	}
}
14

Do you call webImage directly, or do you make sure it’s within a StartCoroutine(webImage()); structure?

15

StartCoroutine was the problem. Didn’t know I needed to use that nor that there was a co routine function.

16

yep, Start is already a coroutine so if you want it somewhere else you need to start the coroutine

17

Yeah, Coroutines do some neat stuff under the hood, you need to let Unity know it’s a Coroutine (though some functions are automatically detected, like Start). Without it Coroutines will go until the first yield and never return.