41 lines
853 B
C++
41 lines
853 B
C++
#ifndef NXS_METRIC_H
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#define NXS_METRIC_H
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#include <wrap/gui/frustum.h>
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#include <vcg/space/sphere3.h>
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#include "nexus.h"
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namespace nxs {
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enum MetricKind { FRUSTUM, FLAT, DELTA };
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class Metric {
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public:
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virtual void GetView() {}
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virtual float GetError(Entry &entry) = 0;
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};
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class FlatMetric: public Metric {
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public:
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float GetError(Entry &entry) { return entry.error; }
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};
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class FrustumMetric: public Metric {
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public:
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vcg::Frustumf frustum;
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virtual void GetView() { frustum.GetView(); }
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float GetError(Entry &entry) {
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vcg::Sphere3f &sphere = entry.sphere;
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float dist = Distance(sphere, frustum.ViewPoint());
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if(dist < 0)
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return 1e20f;
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if(frustum.IsOutside(sphere.Center(), sphere.Radius()))
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return -1;
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return entry.error/frustum.Resolution(dist);
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}
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};
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}
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#endif
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