Method updateView

Source/Render/Camera.cpp:84–105

}

void CameraBasic::updateView() {
	if (_transformDirty) {
		_transformDirty = false;
		bx::Vec3 dest = bx::sub(_target, _position);
		float distance = bx::length(dest);
		if (distance == 0.0f) {
			bx::mtxIdentity(_view.m);
		} else {
			float rotateX = std::asin(dest.y / distance);
			float rotateY = 0.0f;
			if (dest.x != 0.0f) {
				rotateY = -std::atan(dest.z / dest.x);
			}
			Matrix transform;
			bx::mtxRotateZYX(transform.m, rotateX, rotateY, -bx::toRad(_rotation));
			bx::Vec3 up = bx::mul(bx::Vec3{0, 1.0f, 0}, transform.m);
			_up = Vec3::from(bx::normalize(up));
			bx::mtxLookAt(_view.m, _position, _target, _up);
		}
		Updated();
	}
}

const Matrix& CameraBasic::getView() {
	updateView();