63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
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/*
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Moonfall Copyright (C) 2008 Alex Yatskov
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Pch.h"
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#include "Camera.h"
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#include "ICameraTarget.h"
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void Camera::SetTarget(const boost::shared_ptr<ICameraTarget>& target)
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{
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m_targetDynamic = target;
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m_targetDynamic->GetTarget(&m_targetStatic);
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}
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void Camera::SetTarget(const Vector2i& target)
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{
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m_targetDynamic.reset();
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m_targetStatic = target;
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}
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Vector2i Camera::GetTarget() const
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{
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return m_targetStatic;
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}
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void Camera::Update(float elapsed)
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{
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if (m_targetDynamic)
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{
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m_targetDynamic->GetTarget(&m_targetStatic);
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}
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}
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Rect4i Camera::Frame(const Rect4i& viewport) const
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{
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const Vector2i viewportExtents(viewport.GetWidth() / 2, viewport.GetHeight() / 2);
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return Rect4i(
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m_targetStatic.x - viewportExtents.x,
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m_targetStatic.y - viewportExtents.y,
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m_targetStatic.x + viewportExtents.x,
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m_targetStatic.y + viewportExtents.y
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);
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}
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Vector2i Camera::Project(const Rect4i& viewport, const Vector2i& point) const
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{
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const Rect4i frame(Frame(viewport));
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return Vector2i(point.x + frame.x0, point.y + frame.y0);
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}
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