void Camera::update() {
SceneNode::update();
if (viewportAutosize) {
setViewport(0, 0, ARK2D::getContainer()->getDynamicWidth(), ARK2D::getContainer()->getDynamicHeight() );
}
direction = (lookAt - transform.position);
direction.normalise();
// need to set the matrix state. this is only important because lighting doesn't work if this isn't done
if (type == TYPE_ORTHO) {
//our projection matrix will be an orthogonal one in this case
//if the values are not floating point, this command does not work properly
//need to multiply by aspect!!! (otherise will not scale properly)
//projection = glm::ortho((scaleMaybe*-1) * float(viewportAspectRatio), scaleMaybe * float(viewportAspectRatio), scaleMaybe*-1, scaleMaybe, nearClip, farClip);
projection.identity();
projection.ortho2d((viewportOrtho3dScale*-1) * float(viewportAspectRatio), viewportOrtho3dScale * float(viewportAspectRatio), viewportOrtho3dScale*-1, viewportOrtho3dScale, nearClip, farClip);
// http://www.opengl-tutorial.org/beginners-tutorials/tutorial-6-keyboard-and-mouse/
float verticalAngle = camera_pitch;
float horizontalAngle = camera_heading;
direction.set(
cos(verticalAngle) * sin(horizontalAngle),
sin(verticalAngle),
cos(verticalAngle) * cos(horizontalAngle)
);
lookAt = transform.position + direction;
} else if (type == TYPE_ORTHO_2D) {
//projection = glm::ortho(float(viewportX), float(viewportWidth), float(viewportHeight), float(viewportY), float(nearClip), float(farClip));
projection.identity();
projection.ortho2d(float(viewportX), float(viewportWidth), float(viewportHeight), float(viewportY), float(nearClip), float(farClip));
lookAt = transform.position + direction;
} else if (type == TYPE_PERSPECTIVE) {
//projection = glm::perspective(fieldOfView, viewportAspectRatio, nearClip, farClip);
projection.identity();
projection.perspective(fieldOfView, viewportAspectRatio, nearClip, farClip);
//detmine axis for pitch rotation
Vector3<float> axis = direction.cross(up);
//compute quaternion for pitch based on the camera pitch angle
Quaternion<float> pitch_quat = Quaternion<float>::angleAxis(MathUtil::toDegrees(camera_pitch), axis);
//determine heading quaternion from the camera up vector and the heading angle
Quaternion<float> heading_quat = Quaternion<float>::angleAxis(MathUtil::toDegrees(camera_heading), up);
//add the two quaternions
Quaternion<float> temp = pitch_quat.cross(heading_quat);
temp.normalise();
// http://www.opengl-tutorial.org/beginners-tutorials/tutorial-6-keyboard-and-mouse/
float verticalAngle = camera_pitch;
float horizontalAngle = camera_heading;
direction.set(
cos(verticalAngle) * sin(horizontalAngle),
sin(verticalAngle),
cos(verticalAngle) * cos(horizontalAngle)
);
//set the look at to be infront of the camera
lookAt = transform.position + direction;
}
// compute the MVP
if (type == TYPE_ORTHO_2D) {
//view.lookAt(transform.position.x, transform.position.y, transform.position.z, lookAt.x, lookAt.y, lookAt.z, up.x, up.y, up.z);
//view = glm::translate(view, glm::vec3(container->getTranslateX(), container->getTranslateY(), 0.0f) );
//view = glm::scale(view, glm::vec3(container->getScaleX(), container->getScaleY(), 0.0f) );
GameContainer* container = ARK2D::getContainer();
view.identity();
view.lookAt(transform.position.x, transform.position.y, transform.position.z, lookAt.x, lookAt.y, lookAt.z, up.x, up.y, up.z);
view.translate(container->getTranslateX(), container->getTranslateY(), 0.0f);
// todo: rotate
view.scale(container->getScaleX(), container->getScaleY(), 1.0f);
model.identity(); // = glm::mat4(1.0f);
} else if (type == TYPE_PERSPECTIVE || type == TYPE_ORTHO) {
/*float scaleX = 1.0f / float(viewportWidth);
float scaleY = 1.0f / float(viewportHeight);
if (scaleX > scaleY) {
scaleY = scaleX;
} else {
scaleX = scaleY;
}
view = glm::lookAt(position, lookAt, up);
view = glm::scale(view, glm::vec3(scaleX, scaleY, 0.0) );
view = glm::translate(view, glm::vec3(1280.0*-0.5, 720.0*-0.5, 0.0) );*/
// view = glm::lookAt(position, lookAt, up);
view.identity();
view.lookAt(transform.position.x, transform.position.y, transform.position.z, lookAt.x, lookAt.y, lookAt.z, up.x, up.y, up.z);
// model = glm::mat4(1.0f);
model.identity();
}
//MVP = projection * view * model;
}
