app/src/AircraftCameraManipulator.cpp - master - wmigor/z-plane

app/src/AircraftCameraManipulator.cpp

74 строки2 KB

wmigor

Плавное управление мышкой

04 июн 2026, 23:00

04 июн 2026, 23:0043aa585

#include "AircraftCameraManipulator.h"
#include <glm/gtx/rotate_vector.hpp>
#include "converters.h"
#include <asim/Constants.h>

bool AircraftCameraManipulator::handle(const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &)
{
	switch (ea.getEventType())
	{
		case osgGA::GUIEventAdapter::FRAME:
			updateMatrix();
			return true;
		case osgGA::GUIEventAdapter::PUSH:
			_mouseX = ea.getX();
			_mouseY = ea.getY();
			return true;
		case osgGA::GUIEventAdapter::DRAG:
			return handleDrag(ea);
		case osgGA::GUIEventAdapter::KEYDOWN:
			return handleKeyDown(ea);
		default:
			return false;
	}
}

void AircraftCameraManipulator::updateMatrix()
{
	auto body = _aircraft->getBody();
	auto position = body->getMassCenterGlobal();
	auto rotation = body->rotation;
	auto forward = rotation * asim::Constants::Forward;
	auto right = rotation * asim::Constants::Right;
	auto up = glm::cross(right, forward);
	auto eye = position - forward * 7.0 - body->linearVelocity * 0.1 + up * 3.0;

	auto cameraRotation = glm::angleAxis(_cameraYaw, up) * glm::angleAxis(_cameraPitch, right);
	auto direction = cameraRotation * (eye - position);

	eye = position + direction;
	if (eye.y < 0.35)
		eye.y = 0.35;

	up = glm::cross(direction, cameraRotation * right);

	_matrix.makeLookAt(toVec3(eye), toVec3(position), toVec3(up));
}

bool AircraftCameraManipulator::handleDrag(const osgGA::GUIEventAdapter& ea)
{
	if (!(ea.getButtonMask() & osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON))
		return false;

	_cameraYaw -= (ea.getX() - _mouseX) / 180.0;
	_cameraPitch += (ea.getY() - _mouseY) / 180.0;
	_mouseX = ea.getX();
	_mouseY = ea.getY();
	return true;
}


bool AircraftCameraManipulator::handleKeyDown(const osgGA::GUIEventAdapter &ea)
{
	switch (ea.getKey())
	{
		case osgGA::GUIEventAdapter::KEY_C:
			_mouseX = ea.getX();
			_mouseY = ea.getY();
			_cameraPitch = 0.0;
			_cameraYaw = 0.0;
			return true;
		default:
			return false;
	}
}