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- package de.tudarmstadt.informatik.hostage.ui2.fragment.opengl;
- import java.io.IOException;
- import java.io.InputStream;
- import java.nio.ByteBuffer;
- import java.nio.ByteOrder;
- import java.nio.FloatBuffer;
- import java.util.Scanner;
- import javax.microedition.khronos.egl.EGLConfig;
- import javax.microedition.khronos.opengles.GL10;
- import android.content.res.AssetManager;
- import android.opengl.GLES20;
- import android.opengl.GLSurfaceView.Renderer;
- import android.opengl.Matrix;
- import android.util.Log;
- public class ThreatIndicatorGLRenderer implements Renderer {
- public static int loadShader(int type, String source) {
- int shader = GLES20.glCreateShader(type);
- GLES20.glShaderSource(shader, source);
- GLES20.glCompileShader(shader);
- Log.i("gl", GLES20.glGetShaderInfoLog(shader));
- return shader;
- }
-
- public static int loadProgram(String vertexSource, String fragmentSource) {
- int program = GLES20.glCreateProgram();
- GLES20.glAttachShader(program, loadShader(GLES20.GL_VERTEX_SHADER, vertexSource));
- GLES20.glAttachShader(program, loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource));
- GLES20.glLinkProgram(program);
- return program;
- }
-
- public static AssetManager assets;
-
- private int width;
- private int height;
- private float aspectRatio;
-
- private int program;
- private FloatBuffer vertexBuffer;
- private float [] modelview;
- private float [] projection;
- private float [] mvp;
-
- private AnimatedMesh androidMesh = null;
- public ThreatIndicatorGLRenderer() {}
-
- public void onSurfaceCreated(GL10 arg0, EGLConfig arg1) {
- GLES20.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
- GLES20.glEnable(GLES20.GL_DEPTH_TEST);
- GLES20.glEnable(GLES20.GL_CULL_FACE);
-
- try {
- InputStream is = assets.open("meshes/mario.amh");
- androidMesh = new AnimatedMesh(is);
- } catch (IOException e) {
- Log.e("gl", "Couldn't open mesh");
- }
- final float [] positions = {
- 0.0f, 0.5f, 0.0f, 1.0f,
- 0.5f, -0.5f, 0.0f, 1.0f,
- -0.5f, -0.5f, 0.0f, 1.0f,
- };
- ByteBuffer bb = ByteBuffer.allocateDirect(4 * positions.length);
- bb.order(ByteOrder.nativeOrder());
- vertexBuffer = bb.asFloatBuffer();
- vertexBuffer.put(positions);
- vertexBuffer.position(0);
-
- modelview = new float[16];
- Matrix.setIdentityM(modelview, 0);
- projection = new float[16];
- mvp = new float[16];
-
- String vertexSource = "attribute vec3 position; void main() {gl_Position = vec4(position, 1.0);}";
- String fragmentSource = "void main() {gl_FragColor = vec4(1.0, 0.0, 1.0, 1.0);}";
- try {
- vertexSource = inputStreamToString(assets.open("shaders/skinned.vert"));
- } catch (IOException e) {
- e.printStackTrace();
- }
- try {fragmentSource = inputStreamToString(assets.open("shaders/skinned.frag"));
- } catch (IOException e) {
- e.printStackTrace();
- }
- program = loadProgram(vertexSource, fragmentSource);
- }
-
- // see http://stackoverflow.com/questions/309424/read-convert-an-inputstream-to-a-string
- private static String inputStreamToString(InputStream is) {
- Scanner scanner = new Scanner(is);
- Scanner s = scanner.useDelimiter("\\A");
- String result = s.hasNext() ? s.next() : "";
- scanner.close();
- return result;
- }
- public void onDrawFrame(GL10 arg0) {
- GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
-
- GLES20.glUseProgram(program);
- int colorUniformLoc = GLES20.glGetUniformLocation(program, "color");
- int mvpUniformLoc = GLES20.glGetUniformLocation(program, "mvp");
-
- float [] color = {1.0f, 1.0f, 1.0f, 1.0f};
- GLES20.glUniform4fv(colorUniformLoc, 1, color, 0);
- //Matrix.rotateM(mvp, 0, 4.0f, 0.0f, 0.0f, 1.0f);
- Matrix.setIdentityM(modelview, 0);
- Matrix.translateM(modelview, 0, 0.0f, -0.5f, 0.0f);
- Matrix.rotateM(modelview, 0, -90.0f, 1.0f, 0.0f, 0.0f);
- Matrix.multiplyMM(mvp, 0, projection, 0, modelview, 0);
-
- GLES20.glUniformMatrix4fv(mvpUniformLoc, 1, false, mvp, 0);
-
- /*
- GLES20.glEnableVertexAttribArray(positionAttribLoc);
- GLES20.glVertexAttribPointer(positionAttribLoc, 4, GLES20.GL_FLOAT, false, 0, vertexBuffer);
- GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, 3);
- GLES20.glDisableVertexAttribArray(positionAttribLoc);
- */
-
- androidMesh.tick();
- androidMesh.draw(program);
- }
- public void onSurfaceChanged(GL10 arg0, int w, int h) {
- width = w;
- height = h;
- aspectRatio = (float)w / (float)h;
- Matrix.orthoM(projection, 0, -aspectRatio, aspectRatio, -1.0f, 1.0f, -1.0f, 1.0f);
- GLES20.glViewport(0, 0, width, height);
- }
- }
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