EventInSFImage.java

package vrml.external.field;
import vrml.external.field.FieldTypes;
import vrml.external.Browser;
import java.awt.*;
import java.math.BigInteger;

public class EventInSFImage extends EventIn {

  public EventInSFImage() { EventType = FieldTypes.SFIMAGE; }

  public void          setValue(int width, int height, int components, byte[] pixels) throws IllegalArgumentException {
        int count;
        int pixcount;
        String val;
        BigInteger newval;
        byte xx[];


        if (pixels.length != (width*height*components)) {
                throw new IllegalArgumentException();
        }

        if ((components < 1) || (components > 4)) {
                throw new IllegalArgumentException();
        }

        // use BigInt to ensure sign bit does not frick us up.
        xx = new byte[components+1];
        xx[0] = (byte) 0; // no sign bit here!

        val = new String("" + width  + " " + height + " " + components);

        if (pixels== null) { pixcount = 0;} else {pixcount=pixels.length;}

        if (components == 1) {
                for (count = 0; count < pixcount; count++) {
                        xx[1] = pixels[count];  
                        newval = new BigInteger(xx);
                        //System.out.println ("Big int " + newval.toString(16));
                        val = val.concat(" 0x" + newval.toString(16));
                }       
        }
        if (components == 2) {
                for (count = 0; count < pixcount; count+=2) {
                        xx[1] = pixels[count]; xx[2] = pixels[count+1]; 
                        newval = new BigInteger(xx);
                        //System.out.println ("Big int " + newval.toString(16));
                        val = val.concat(" 0x" + newval.toString(16));

                }       
        }
        if (components == 3) {
                for (count = 0; count < pixcount; count+=3) {
                        xx[1] = pixels[count]; xx[2] = pixels[count+1]; xx[3]=pixels[count+2];
                        newval = new BigInteger(xx);
                        //System.out.println ("Big int " + newval.toString(16));
                        val = val.concat(" 0x" + newval.toString(16));
                }       
        }
        if (components == 4) {
                for (count = 0; count < pixcount; count+=4) {
                        xx[1] = pixels[count]; xx[2] = pixels[count+1]; xx[3]=pixels[count+2]; xx[4]=pixels[count+3];
                        newval = new BigInteger(xx);
                        //System.out.println ("Big int " + newval.toString(16));
                        val = val.concat(" 0x" + newval.toString(16));

                }       
        }
        //System.out.println ("sending " + val);

    Browser.newSendEvent (this, val.length() + ":" + val + " ");

        return;
  }
}