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53 lines
2.5 KiB
C++
53 lines
2.5 KiB
C++
// Copyright 2009, Google Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// 3. Neither the name of Google Inc. nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// This file contains the declaration of the ComputeFeatureLookAt function.
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#ifndef KML_ENGINE_FEATURE_VIEW_H__
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#define KML_ENGINE_FEATURE_VIEW_H__
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#include "kml/dom/abstractview.h"
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#include "kml/dom/feature.h"
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namespace kmlengine {
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class Bbox;
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// Returns a <LookAt> element computed from the spatial extents of a feature.
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// The LookAt's altitude, heading and tilt are set to 0.0, and the altitudeMode
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// is set to relativeToGroud. The range is computed such that the feature will
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// be within a viewport with a field of view of 60 deg and is clamped to a
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// minimum of 1,000 meters. Returns NULL if the feature has no specified
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// AbstractView and none can be computed.
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kmldom::LookAtPtr ComputeFeatureLookAt(const kmldom::FeaturePtr& feature);
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// Returns a <LookAt> element computed from the spatial extents of a Bbox.
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// See ComputeFeatureLookAt for the details of how the LookAt is created.
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kmldom::LookAtPtr ComputeBboxLookAt(const Bbox& bbox);
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} // end namespace kmlengine
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#endif // KML_ENGINE_FEATURE_VIEW_H__
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