/**
* Render the arrow as a line and a _head.
*
* @param gl OpenGL Context
*/
public void render(GL2 gl) {
// save Light Attributes and remove lighting to get "full" RGB colors
// gl.glPushAttrib( GL2.GL_LIGHTING_BIT );
gl.glPushAttrib(GL2.GL_ENABLE_BIT);
gl.glDisable(GL2.GL_LIGHTING);
if (_fg_verb) {
System.out.println(
"Arrow pos="
+ _pos.toString()
+ " angZ1="
+ _angZ1
+ " angY2="
+ _angY2
+ " length="
+ _length);
_fg_verb = false;
}
// save transformation matrix, then translate and scale.
gl.glPushMatrix();
gl.glTranslatef(_pos.x, _pos.y, _pos.z);
gl.glRotatef(Matrix.rad2Deg(_angZ1), 0, 0, 1); // rotation around 0z
gl.glRotatef(Matrix.rad2Deg(_angY2), 0, 1, 0); // rotation around 0y
// draw line
gl.glColor4f(_color_fg.x, _color_fg.y, _color_fg.z, _color_fg.w);
gl.glLineWidth(1.0f);
gl.glBegin(GL.GL_LINES);
{
gl.glVertex3f(0, 0, 0);
gl.glVertex3f(_length, 0, 0);
}
gl.glEnd();
// draw head
gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL2GL3.GL_FILL);
gl.glTranslatef(_length, 0, 0);
gl.glBegin(GL.GL_TRIANGLES);
{
for (float[] face : _head_faces) {
gl.glVertex3f(face[0], face[1], face[2]);
gl.glVertex3f(face[3], face[4], face[5]);
gl.glVertex3f(face[6], face[7], face[8]);
}
}
gl.glEnd();
// restore transformation matrix
gl.glPopMatrix();
// restore attributes
gl.glPopAttrib();
}
@Override
public Image run(Image input, int imageType) {
ImageData inData = input.getImageData(); // Die echten Bilddaten sind hier drin
// RGB zu YUV Umwandlungsmatrix
// double[] linear_conversion = {
// 0.2126, 0.7152, 0.0722,
// -0.09991, -0.33609, 0.436,
// 0.615, -0.55861, -0.05639
// };
double[] linear_conversion = {0.299, 0.587, 0.114, -0.147, -0.289, 0.436, 0.615, -0.515, -0.1};
Matrix m = new Matrix(3, 3, linear_conversion);
// YUV zu RGB Umwandlungmatrix (das Inverse)
// double[] inv_linear_conversion = {
// 1.0000, 0.0000, 1.28033,
// 1.0000, -0.21482, -0.38059,
// 1.0000, 2.12798, -0.0005
// };
double[] inv_linear_conversion = {
1.0000, 0.0000, 1.1398, 1.0000, -0.3946, -0.5805, 1.0000, 2.0320, -0.0005
};
Matrix minv = new Matrix(3, 3, inv_linear_conversion);
for (int v = 0; v < inData.height; v++) {
for (int u = 0; u < inData.width; u++) {
int pixel = inData.getPixel(u, v);
RGB rgb = inData.palette.getRGB(pixel);
// Variante mit Farbwerte U und V von YUV auf 0 setzen
Vector r = new Vector(rgb.red, rgb.green, rgb.blue);
double[] y = m.times(r).getV();
y[2] = 0;
y[1] = 0;
r = minv.times(new Vector(y));
rgb.red = (int) r.x(1);
rgb.green = (int) r.x(2);
rgb.blue = (int) r.x(3);
if (rgb.red < 0) rgb.red = 0;
else if (rgb.red > 255) rgb.red = 255;
if (rgb.green < 0) rgb.green = 0;
else if (rgb.green > 255) rgb.green = 255;
if (rgb.blue < 0) rgb.blue = 0;
else if (rgb.blue > 255) rgb.blue = 255;
// Variante mit der Sättigung auf 0 gesetzt (schlechter)
// float[] hsb = inData.palette.getRGB(pixel).getHSB();
//
// hsb[1] = 0; //Sättigung auf 0 setzen
//
// Color c = new Color(Color.HSBtoRGB(hsb[0],hsb[1],hsb[2]));
// RGB rgb = new RGB(0,0,0);
// rgb.red = c.getRed();
// rgb.green = c.getGreen();
// rgb.blue = c.getBlue();
inData.setPixel(u, v, inData.palette.getPixel(rgb));
}
}
return new Image(input.getDevice(), inData);
}
/** Set Arrow to match given vector */
public void setup(Vector3f vec) {
float ang[] = Matrix.angleFromVec(vec);
_angZ1 = ang[0];
_angY2 = ang[1];
_length = vec.length();
}