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71 lines
2.7 KiB
71 lines
2.7 KiB
/****************************************************************************
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Copyright (c) 2022-2023 Xiamen Yaji Software Co., Ltd.
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https://www.cocos.com/
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "cocos/core/geometry/Capsule.h"
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#include "cocos/math/Vec3.h"
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namespace cc {
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namespace geometry {
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void Capsule::transform(const Mat4 &m, const Vec3 & /*pos*/, const Quaternion &rot, const Vec3 &scale, Capsule *out) const {
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const auto maxComponent = mathutils::absMaxComponent(scale);
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out->radius = this->radius * std::abs(maxComponent);
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const auto halfTotalWorldHeight = (this->halfHeight + this->radius) * std::abs(scale.y);
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auto halfWorldHeight = halfTotalWorldHeight - out->radius;
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if (halfWorldHeight < 0) halfWorldHeight = 0;
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out->halfHeight = halfWorldHeight;
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out->center.transformMat4(this->center, m);
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Quaternion::multiply(this->rotation, rot, &out->rotation);
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out->updateCache();
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}
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void Capsule::updateCache() {
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updateLocalCenter();
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ellipseCenter0.transformQuat(rotation);
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ellipseCenter1.transformQuat(rotation);
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ellipseCenter0 += center;
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ellipseCenter1 += center;
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}
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void Capsule::updateLocalCenter() {
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switch (axis) {
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case CenterEnum::X:
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ellipseCenter0 = {halfHeight, 0, 0};
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ellipseCenter1 = {-halfHeight, 0, 0};
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break;
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case CenterEnum::Y:
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ellipseCenter0 = {0, halfHeight, 0};
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ellipseCenter1 = {0, -halfHeight, 0};
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break;
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case CenterEnum::Z:
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ellipseCenter0 = {0, 0, halfHeight};
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ellipseCenter1 = {0, 0, -halfHeight};
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break;
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default:
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CC_ABORT();
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}
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}
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} // namespace geometry
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} // namespace cc
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