diff options
author | Laszlo Agocs <laszlo.agocs@qt.io> | 2017-03-24 14:54:24 +0100 |
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committer | Laszlo Agocs <laszlo.agocs@qt.io> | 2017-03-29 10:58:06 +0000 |
commit | c72b821b5911842757a3929fb287471ad5d457ea (patch) | |
tree | 07aace2498733596acc411cf096fcff998485c42 /examples/vulkan/hellovulkancubes/camera.cpp | |
parent | e7a7931ba1e4fd6d80674c73e6e9e9a8099b9391 (diff) |
Add the Vulkan cube example
Features a little bit more than a cube, though.
Change-Id: I636d4875ba9ccf722ed3caab97f14570be785748
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Diffstat (limited to 'examples/vulkan/hellovulkancubes/camera.cpp')
-rw-r--r-- | examples/vulkan/hellovulkancubes/camera.cpp | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/examples/vulkan/hellovulkancubes/camera.cpp b/examples/vulkan/hellovulkancubes/camera.cpp new file mode 100644 index 0000000000..64dee03154 --- /dev/null +++ b/examples/vulkan/hellovulkancubes/camera.cpp @@ -0,0 +1,112 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, you may use this file under the terms of the BSD license +** as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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; +} |