mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-23 12:07:03 +08:00
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
// Copyright (C) 2017 The Qt Company Ltd.
|
|
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
|
|
|
|
#include "camera.h"
|
|
|
|
Camera::Camera(const QVector3D &pos)
|
|
: m_forward(0.0f, 0.0f, -1.0f),
|
|
m_right(1.0f, 0.0f, 0.0f),
|
|
m_up(0.0f, 1.0f, 0.0f),
|
|
m_pos(pos),
|
|
m_yaw(0.0f),
|
|
m_pitch(0.0f)
|
|
{
|
|
}
|
|
|
|
static inline void clamp360(float *v)
|
|
{
|
|
if (*v > 360.0f)
|
|
*v -= 360.0f;
|
|
if (*v < -360.0f)
|
|
*v += 360.0f;
|
|
}
|
|
|
|
void Camera::yaw(float degrees)
|
|
{
|
|
m_yaw += degrees;
|
|
clamp360(&m_yaw);
|
|
m_yawMatrix.setToIdentity();
|
|
m_yawMatrix.rotate(m_yaw, 0, 1, 0);
|
|
|
|
QMatrix4x4 rotMat = m_pitchMatrix * m_yawMatrix;
|
|
m_forward = (QVector4D(0.0f, 0.0f, -1.0f, 0.0f) * rotMat).toVector3D();
|
|
m_right = (QVector4D(1.0f, 0.0f, 0.0f, 0.0f) * rotMat).toVector3D();
|
|
}
|
|
|
|
void Camera::pitch(float degrees)
|
|
{
|
|
m_pitch += degrees;
|
|
clamp360(&m_pitch);
|
|
m_pitchMatrix.setToIdentity();
|
|
m_pitchMatrix.rotate(m_pitch, 1, 0, 0);
|
|
|
|
QMatrix4x4 rotMat = m_pitchMatrix * m_yawMatrix;
|
|
m_forward = (QVector4D(0.0f, 0.0f, -1.0f, 0.0f) * rotMat).toVector3D();
|
|
m_up = (QVector4D(0.0f, 1.0f, 0.0f, 0.0f) * rotMat).toVector3D();
|
|
}
|
|
|
|
void Camera::walk(float amount)
|
|
{
|
|
m_pos[0] += amount * m_forward.x();
|
|
m_pos[2] += amount * m_forward.z();
|
|
}
|
|
|
|
void Camera::strafe(float amount)
|
|
{
|
|
m_pos[0] += amount * m_right.x();
|
|
m_pos[2] += amount * m_right.z();
|
|
}
|
|
|
|
QMatrix4x4 Camera::viewMatrix() const
|
|
{
|
|
QMatrix4x4 m = m_pitchMatrix * m_yawMatrix;
|
|
m.translate(-m_pos);
|
|
return m;
|
|
}
|