hostage/src/de/tudarmstadt/informatik/hostage/ui2/fragment/opengl/AnimatedMesh.java

package de.tudarmstadt.informatik.hostage.ui2.fragment.opengl;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;

import android.opengl.GLES20;
import android.util.Log;

public class AnimatedMesh {
	private ByteBuffer data;
	
	private int vertexOffset;
	private int vertexSize;
	private int triangleOffset;
	private int triangleCount;
	
	public AnimatedMesh(InputStream is) {
		ByteArrayOutputStream out = new ByteArrayOutputStream();
		try {
			final int EOF = -1;
			int len;
			byte[] buffer = new byte[1 << 12];
			while (EOF != (len = is.read(buffer)))
				out.write(buffer, 0, len);
		} catch (IOException e) {
			e.printStackTrace();
			return;
		}

		//data = ByteBuffer.wrap(out.toByteArray());
		data = ByteBuffer.allocateDirect(out.size());
		data.order(ByteOrder.nativeOrder());
		data.put(out.toByteArray());
		data.position(0);

		int magicNum = data.getInt();
		int version = data.getInt();
		
		vertexSize = 48;
		vertexOffset = data.getInt();
		int vertexCount = data.getInt();
		triangleOffset = data.getInt();
		triangleCount = data.getInt();
		int boneOffset = data.getInt();
		int boneCount = data.getInt();
		int actionOffset = data.getInt();
		int actionCount = data.getInt();
		
		Log.i("tag", data.getFloat()+" "+data.getFloat()+" "+data.getFloat());
	}
	
	public void draw() {
		int positionIndex = 0;
		GLES20.glEnableVertexAttribArray(positionIndex);
		data.position(vertexOffset);
		GLES20.glVertexAttribPointer(positionIndex, 3, GLES20.GL_FLOAT, false, vertexSize, data.asFloatBuffer());
		data.position(triangleOffset);
		GLES20.glDrawElements(GLES20.GL_TRIANGLES, 3 * triangleCount, GLES20.GL_UNSIGNED_INT, data.asIntBuffer());
		//GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, 3 * triangleCount);
		GLES20.glDisableVertexAttribArray(positionIndex);
	}
}