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// Copyright Contributors to the OpenVDB Project
// SPDX-License-Identifier: MPL-2.0
#ifndef OPENVDB_VIEWER_VIEWER_HAS_BEEN_INCLUDED
#define OPENVDB_VIEWER_VIEWER_HAS_BEEN_INCLUDED
#include <openvdb/openvdb.h>
#include <string>
namespace openvdb_viewer {
class Viewer;
enum { DEFAULT_WIDTH = 900, DEFAULT_HEIGHT = 800 };
/// @brief Initialize and return a viewer.
/// @param progName the name of the calling program (for use in info displays)
/// @param background if true, run the viewer in a separate thread
/// @note Currently, the viewer window is a singleton (but that might change
/// in the future), so although this function returns a new Viewer instance
/// on each call, all instances are associated with the same window.
Viewer init(const std::string& progName, bool background);
/// @brief Destroy all viewer windows and release resources.
/// @details This should be called from the main thread before your program exits.
void exit();
/// Manager for a window that displays OpenVDB grids
class Viewer
{
public:
/// Set the size of and open the window associated with this viewer.
void open(int width = DEFAULT_WIDTH, int height = DEFAULT_HEIGHT);
/// Display the given grids.
void view(const openvdb::GridCPtrVec&);
/// @brief Process any pending user input (keyboard, mouse, etc.)
/// in the window associated with this viewer.
void handleEvents();
/// @brief Close the window associated with this viewer.
/// @warning The window associated with this viewer might be shared with other viewers.
void close();
/// Resize the window associated with this viewer.
void resize(int width, int height);
/// Return a string with version number information.
std::string getVersionString() const;
private:
friend Viewer init(const std::string&, bool);
Viewer();
};
} // namespace openvdb_viewer
#endif // OPENVDB_VIEWER_VIEWER_HAS_BEEN_INCLUDED
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