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Index › Programming Questions & Help › Syntax Questions › Movie in Custom Class

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Movie in Custom Class (Read 1064 times)

markvonrose

Movie in Custom Class
Jan 3^rd, 2010, 7:53pm

I'm trying to have a Movie as piece of data in a custom Class. The basic class structure is as follows:

class Tile {
float maxChange = 0.3;
float currentTime, nextTime;
Movie clip;
Tile (PApplet parent, String s_) {
clip = new Movie(parent, s_);
}
}

I'm creating an object like this:
Tile t = new Tile(this, "movie.mov");

However, this throws the error "The file "movie.mov" is missing or inaccessible". I tried to put an absolute path to the file, but that gives me a "
java.lang.NullPointerException".

Any ideas? Thanks.

NoahBuddy

Re: Movie in Custom Class
Reply #1 - Jan 4^th, 2010, 12:00am

Are you initializing the Tile class inside of setup()?

Unless the environment has changed (I am using an older version of PDE), some variables, such as the path, are not ready inside the PApplet until main() has been run. (setup() comes after that)

Someone with more knowledge can correct me if I'm mistaken.

Also, for troubleshooting sake, can you get something like this to work?:
http://processing.org/reference/selectInput_.html

markvonrose

Re: Movie in Custom Class
Reply #2 - Jan 4^th, 2010, 11:50am

Ah. Okay. So that made the object able to be created. Now, though, I get an error "Exception in thread "Animation Thread" java.lang.NullPointerException" with the line t.showClip() highlighted:

Tile t;

void setup()
{
Tile t = new Tile(this, "movie.mov");
size(800, 600);
frameRate(30);
}

void draw()
{
background(0);
t.showClip();
}

class Tile {
float maxChange = 0.3;
float currentTime, nextTime;
Movie clip;
Tile (PApplet parent, String s_) {
this.clip = new Movie(parent, s_);
this.clip.play();
}
void showClip() {
image(this.clip, 0, 0);
}
}

thanks in advance.

NoahBuddy Ex Member	Re: Movie in Custom Class Reply #3 - Jan 4^th, 2010, 9:43pm In setup(), change the line to "t = new Tile(this, "movie.mov");" By adding "Tile" to the beginning of that line, you are creating another 't' object that can only be referenced inside of setup(). For more info on why it does this, take a look here: http://processing.org/learning/basics/variablescope.html

markvonrose YaBB Newbies Offline Posts: 3	Re: Movie in Custom Class Reply #4 - Jan 5^th, 2010, 1:37pm blush. Thanks. Just realized this last night and was about to post a follow up for anyone else that overlooked.

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