public void mouseDragged(MouseEvent e) {
oldMoveVector = new Vector3f(fixOldX, oldY, oldZ);
oldWorldZMoveVector = new Vector3f(oldX, oldY, oldZ);
// get x,y
newX = e.getX() / (adjustToScreenSize / 2) - 1; // used to be (float)jframe.getWidth()
newY = 1 - e.getY() / (adjustToScreenSize / 2); // used to be (float)jframe.getWidth()
newZ = calculateZ(newX, newY);
newMoveVector = new Vector3f(fixNewX, newY, newZ);
newWorldZMoveVector = new Vector3f(newX, newY, newZ);
// now calculate the Camera movement
Vector3f moveAxis = new Vector3f(); // moving around this axis
moveAxis.cross(
oldMoveVector,
newMoveVector); // TODO identify, if the axis points down or upwards => adjust the angle
float moveAngle = oldMoveVector.angle(newMoveVector); // moving by this angle
// special Vector including the angle
AxisAngle4f moveAxisAngle = new AxisAngle4f();
moveAxisAngle.set(moveAxis, moveAngle);
// calculate turning axis
mouseTurn = new Matrix4f();
mouseTurn.setIdentity();
mouseTurn.set(moveAxisAngle); // the new Multiplication-Matrix
// now calculate the World movement
Vector3f worldMoveAxis = new Vector3f(); // moving around this axis
worldMoveAxis.x = 0;
worldMoveAxis.y = 0;
worldMoveAxis.z = 1;
float worldMoveAngle = oldWorldZMoveVector.angle(newWorldZMoveVector); // moving by this angle
// adjust world Angle for turning back
Vector3f worldMoveAxisTemp = new Vector3f();
worldMoveAxisTemp.cross(oldWorldZMoveVector, newWorldZMoveVector);
if (worldMoveAxisTemp.z < 0) {
worldMoveAngle = -worldMoveAngle;
}
// special Vector including the angle
AxisAngle4f worldMoveAxisAngle = new AxisAngle4f();
worldMoveAxisAngle.set(worldMoveAxis, worldMoveAngle);
// calculate turning axis
mouseWorldTurn = new Matrix4f();
mouseWorldTurn.setIdentity();
mouseWorldTurn.set(worldMoveAxisAngle); // the new Multiplication-Matrix
// override the initial starting values
fixOldX = fixNewX;
oldX = newX;
oldY = newY;
oldZ = newZ;
}
public void keyPressed(KeyEvent e) {
keyMove = new Matrix4f();
keyMove.setIdentity();
Vector3f keyMovement = new Vector3f();
switch (e.getKeyChar()) {
case 's':
keyMovement.z = -1 * scale;
keyMove.setTranslation(keyMovement);
break;
case 'w':
keyMovement.z = 1 * scale;
keyMove.setTranslation(keyMovement);
break;
case 'a':
keyMovement.x = 1 * scale;
keyMove.setTranslation(keyMovement);
break;
case 'd':
keyMovement.x = -1 * scale;
keyMove.setTranslation(keyMovement);
break;
default:
System.out.println("invalid key");
break;
}
}
public void run() {
adjustToScreenSize =
(float)
Math.min(
jframe.getWidth(),
jframe.getHeight()); // used here, since you can change the screen-Size
Matrix4f newTranslation = new Matrix4f();
newTranslation.setIdentity();
Matrix4f oldcTranslation = new Matrix4f();
oldcTranslation = camera.getCameraMatrix();
// world z-Axis-turn
if (mouseWorldTurn != null) {
newTranslation.mul(mouseWorldTurn);
mouseWorldTurn.setIdentity();
}
// camera x-Axis-turn
if (mouseTurn != null) {
newTranslation.mul(mouseTurn);
mouseTurn.setIdentity();
}
// camera movement
if (keyMove != null) {
newTranslation.mul(keyMove);
keyMove.setIdentity();
}
newTranslation.mul(oldcTranslation);
camera.setCameraMatrix(newTranslation);
// something still appears to be wrong while turning
// Trigger redrawing of the render window
renderPanel.getCanvas().repaint();
}