Revision 59,
864 bytes
checked in by mattausch, 19 years ago
(diff) |
completely changed file structure plus software design
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[59] | 1 | #ifndef _OcclusionQuery_H__
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| 2 | #define _OcclusionQuery_H__
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| 3 |
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| 4 | namespace GtpVisibility {
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| 5 |
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| 6 | /** This class is an abstract interface for occlusion queries.
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| 7 | */
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| 8 | class OcclusionQuery
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| 9 | {
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| 10 | public:
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| 11 | // OcclusionQuery();
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| 12 | virtual ~OcclusionQuery() {};
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| 13 | /** Returns the result of an occlusion query in terms of visible pixels.
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| 14 | @returns number of visible pixels
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| 15 | */
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| 16 | virtual unsigned int GetQueryResult() const = 0;
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| 17 | /** Returns true if the result of the query is available, false otherwise.
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| 18 | @returns if result is available
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| 19 | */
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| 20 | virtual bool ResultAvailable() const = 0;
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| 21 | /** Begins occlusion query.
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| 22 | @remark the query counts the number of visible pixels between it's begin and end
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| 23 | */
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| 24 | virtual void BeginQuery() const = 0;
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| 25 | /** Ends occlusion query.
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| 26 | */
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| 27 | virtual void EndQuery() const = 0;
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| 28 | };
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| 29 |
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| 30 | } // namespace GtpVisibility
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| 31 | #endif // OcclusionQuery_H |
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