import java.io.*;
import com.anotherbigidea.flash.*;
import com.anotherbigidea.flash.interfaces.*;
import com.anotherbigidea.flash.writers.*;
import com.anotherbigidea.flash.structs.*;

/**
 * An example of writing directly to the SWF file format interfaces.
 * Create a movie consisting of 4 instances of a Movie Clip containing
 * a rotating red square.
 * 
 * Compare this to RedSquare.java
 */
public class RedSquare2
{
    /**
     * First arg is output filename
     */
    public static void main( String[] args ) throws IOException
    {        
        SWFWriter writer = new SWFWriter( args[0] );
        SWFTagTypes swf = new TagWriter( writer );
        
        swf.header( 5,     //Flash version
                    -1,    //unknown length
                    550 * SWFConstants.TWIPS,  //width in twips
                    400 * SWFConstants.TWIPS,  //height in twips
                    12,    //frames per sec
                    -1 );  //unknown frame count
        
        swf.tagSetBackgroundColor( new Color(255,255,255) );
        
        //--define a shape
        Rect outline = new Rect( -1020, -1020, 1020, 1020 );
        SWFShape shape = swf.tagDefineShape( 1, outline );  //id = 1
        
        //--define the shape geometry - coords are in twips (= 1/20 pixel)
        shape.defineFillStyle( new Color( 255, 0, 0 ) );
        shape.defineLineStyle( 40, new Color( 0, 0, 0 ) );
        shape.setFillStyle1( 1 );
        shape.setLineStyle( 1 );
        shape.move( -1000, -1000 );  //move coords are absolute
        shape.line( 2000, 0 );       //line coords are deltas
        shape.line( 0, 2000 );
        shape.line( -2000, 0 );
        shape.line( 0, -2000 );
        shape.done();                //don't forget this
        
        //--define a sprite (movie clip)
        SWFTagTypes sprite = swf.tagDefineSprite( 2 );   //id =2
        
        //--place the shape in the first frame of the sprite
        sprite.tagPlaceObject2( false, -1, 1, 1, new Matrix(), null, -1, null, 0 );
        
        sprite.tagShowFrame();  //end the first frame
        
        //--Rotate the square (using degrees for clarity)
        for( int angle = 10; angle < 90; angle += 10 )
        {
            //--Convert degrees to radians
            double radians = angle * Math.PI / 180.0;
            
            //--Create a rotation matrix
            double sin = Math.sin( radians );
            double cos = Math.cos( radians );
            Matrix matrix = new Matrix( cos, cos, sin, -sin, 0, 0 );
            
            //--Alter the square using the transformation matrix
            sprite.tagPlaceObject2( true, -1, 1, -1, matrix, null, -1, null, 0 );
            sprite.tagShowFrame();
        }        
        
        //--End the sprite timeline
        sprite.tagEnd();

        //--Place 4 instances of teh sprite (at depths 1,2,3,4)
        swf.tagPlaceObject2( false, -1, 1, 2, new Matrix(2000,2000), null, -1, null, 0 );
        swf.tagPlaceObject2( false, -1, 2, 2, new Matrix(6000,2000), null, -1, null, 0 );
        swf.tagPlaceObject2( false, -1, 3, 2, new Matrix(2000,6000), null, -1, null, 0 );
        swf.tagPlaceObject2( false, -1, 4, 2, new Matrix(6000,6000), null, -1, null, 0 );
        
        //--End the first frame of the main timeline
        swf.tagShowFrame();
        
        //--End the main timeline
        swf.tagEnd();      
    }
}