| /* |
| * Copyright (C) 2020 Igalia S.L. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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. |
| */ |
| |
| #include "config.h" |
| #include "WebXRRigidTransform.h" |
| |
| #if ENABLE(WEBXR) |
| |
| #include "DOMPointReadOnly.h" |
| #include "TransformationMatrix.h" |
| #include <JavaScriptCore/TypedArrayInlines.h> |
| #include <wtf/IsoMallocInlines.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(WebXRRigidTransform); |
| |
| Ref<WebXRRigidTransform> WebXRRigidTransform::create() |
| { |
| return adoptRef(*new WebXRRigidTransform({ }, { })); |
| } |
| |
| ExceptionOr<Ref<WebXRRigidTransform>> WebXRRigidTransform::create(const DOMPointInit& position, const DOMPointInit& orientation) |
| { |
| // The XRRigidTransform(position, orientation) constructor MUST perform the following steps when invoked: |
| // 1. Let transform be a new XRRigidTransform. |
| |
| // 2. If position is not a DOMPointInit initialize transform’s position to { x: 0.0, y: 0.0, z: 0.0, w: 1.0 }. |
| // 3. If position’s w value is not 1.0, throw a TypeError. |
| // 4. Else initialize transform’s position’s x value to position’s x dictionary member, y value to position’s y dictionary member, z value to position’s z dictionary member and w to 1.0. |
| if (position.w != 1.0) |
| return Exception { TypeError }; |
| DOMPointInit positionInit { position.x, position.y, position.z, 1 }; |
| |
| // 5. If orientation is not a DOMPointInit initialize transform’s orientation to { x: 0.0, y: 0.0, z: 0.0, w: 1.0 }. |
| // 6. Else initialize transform’s orientation’s x value to orientation’s x dictionary member, y value to orientation’s y dictionary member, z value to orientation’s z dictionary member and w value to orientation’s w dictionary member. |
| // 7. Normalize x, y, z, and w components of transform’s orientation. |
| DOMPointInit orientationInit { orientation.x, orientation.y, orientation.z, orientation.w }; |
| { |
| double length = std::sqrt(orientationInit.x * orientationInit.x + orientationInit.y * orientationInit.y |
| + orientationInit.z * orientationInit.z + orientationInit.w * orientationInit.w); |
| if (WTF::areEssentiallyEqual<double>(length, 0)) |
| return Exception { InvalidStateError }; |
| |
| orientationInit= { |
| orientationInit.x / length, orientationInit.y / length, |
| orientationInit.z / length, orientationInit.w / length, |
| }; |
| } |
| |
| // 8. Return transform. |
| return adoptRef(*new WebXRRigidTransform(positionInit, orientationInit)); |
| } |
| |
| WebXRRigidTransform::WebXRRigidTransform(const DOMPointInit& position, const DOMPointInit& orientation) |
| : m_position(DOMPointReadOnly::create(position)) |
| , m_orientation(DOMPointReadOnly::create(orientation)) |
| { |
| // FIXME: implement properly, per spec. |
| TransformationMatrix matrix; |
| auto matrixData = matrix.toColumnMajorFloatArray(); |
| m_matrix = Float32Array::create(matrixData.data(), matrixData.size()); |
| } |
| |
| WebXRRigidTransform::~WebXRRigidTransform() = default; |
| |
| const DOMPointReadOnly& WebXRRigidTransform::position() const |
| { |
| return m_position; |
| } |
| |
| const DOMPointReadOnly& WebXRRigidTransform::orientation() const |
| { |
| return m_orientation; |
| } |
| |
| Ref<Float32Array> WebXRRigidTransform::matrix() const |
| { |
| auto matrix = Float32Array::create(16); |
| matrix->zeroFill(); |
| return matrix; |
| } |
| |
| Ref<WebXRRigidTransform> WebXRRigidTransform::inverse() const |
| { |
| // FIXME: implement properly. |
| return WebXRRigidTransform::create(); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(WEBXR) |