/**
* Called back immediately after the OpenGL context is initialized. Can be used to perform
* one-time initialization. Run only once.
*/
@Override
public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2(); // get the OpenGL graphics context
glu = new GLU(); // get GL Utilities
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // set background (clear) color
gl.glClearDepth(1.0f); // set clear depth value to farthest
gl.glEnable(GL_DEPTH_TEST); // enables depth testing
gl.glDepthFunc(GL_LEQUAL); // the type of depth test to do
gl.glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // best perspective correction
gl.glShadeModel(GL_SMOOTH); // blends colors nicely, and smoothes out lighting
// Load the texture image
try {
// Create a OpenGL Texture object from (URL, mipmap, file suffix)
// Use URL so that can read from JAR and disk file.
texture =
TextureIO.newTexture(
this.getClass().getResource(textureFileName), false, textureFileType);
} catch (GLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// Use linear filter for texture if image is larger than the original texture
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Use linear filter for texture if image is smaller than the original texture
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// Texture image flips vertically. Shall use TextureCoords class to retrieve
// the top, bottom, left and right coordinates, instead of using 0.0f and 1.0f.
TextureCoords textureCoords = texture.getImageTexCoords();
textureTop = textureCoords.top();
textureBottom = textureCoords.bottom();
// textureLeft = textureCoords.left();
// textureRight = textureCoords.right();
// Enable the texture
texture.enable(gl);
// gl.glEnable(GL_TEXTURE_2D);
// we want back facing polygons to be filled completely and that we want front
// facing polygons to be outlined only.
gl.glPolygonMode(GL_BACK, GL_FILL); // Back Face Is Filled In
gl.glPolygonMode(GL_FRONT, GL_LINE); // Front Face Is Drawn With Lines
for (int x = 0; x < numPoints; x++) { // Loop Through The Y Plane
for (int y = 0; y < numPoints; y++) {
// Apply The Wave To Our Mesh
// xmax is 45. Get 9 after dividing by 5. Subtract 4.5 to centralize.
points[x][y][0] = (float) x / 5.0f - 4.5f;
points[x][y][1] = (float) y / 5.0f - 4.5f;
// Sine wave pattern
points[x][y][2] = (float) (Math.sin(Math.toRadians(x / 5.0f * 40.0f)));
}
}
}
