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99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
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#ifndef __BILLBOARD_H
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#define __BILLBOARD_H
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#include <core/defines.h>
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#include "render.h"
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namespace NxXbox
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{
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/******************************************************************/
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/* */
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/* A single billboard entry. */
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/* */
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/******************************************************************/
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struct sBillboardEntry
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{
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sBillboardData::EBillboardType m_type;
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sMesh *mp_mesh;
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// Mth::Vector m_pivot_pos;
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// Mth::Vector m_pivot_axis; // Normalised axis of rotation, valid only for type ARBITRARY_AXIS_ALIGNED.
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// float m_verts[4][3]; // Verts defined as an offset from the pivot point.
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sBillboardEntry( sMesh *p_mesh );
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~sBillboardEntry( void );
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};
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/******************************************************************/
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/* */
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/* Stores information about a billboard batch, effectively a set */
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/* of billboards with the same material. */
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/* */
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/******************************************************************/
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struct sBillboardMaterialBatch
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{
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int m_entry_size; // Push buffer size of each billboard entry (bytes).
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sMaterial *mp_material;
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Lst::Head <sBillboardEntry> *mp_entries[3]; // One entry each for screen aligned, y axis aligned, and arbitrary aligned.
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sBillboardMaterialBatch( sMaterial *p_material );
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~sBillboardMaterialBatch( void );
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bool IsEmpty( void );
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float GetDrawOrder( void );
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sMaterial *GetMaterial( void );
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void AddEntry( sMesh *p_mesh );
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void RemoveEntry( sMesh *p_mesh );
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void ProcessMesh( sMesh *p_mesh );
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void Render( void );
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void Reset( void );
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};
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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struct sBillboardManager
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{
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enum
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{
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MAX_BILLBOARD_BATCHES = 256
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};
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int m_num_batches;
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sBillboardMaterialBatch *mp_batches[MAX_BILLBOARD_BATCHES];
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Mth::Vector m_at;
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Mth::Vector m_screen_right;
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Mth::Vector m_screen_up;
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Mth::Vector m_at_xz;
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Mth::Vector m_screen_right_xz;
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sBillboardManager( void );
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~sBillboardManager( void );
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void Render( uint32 flags );
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void SetCameraMatrix( void );
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sBillboardMaterialBatch *GetBatch( sMaterial *p_material );
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void AddEntry( sMesh *p_mesh );
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void RemoveEntry( sMesh *p_mesh );
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void SortBatches( void );
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};
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extern sBillboardManager BillboardManager;
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} // namespace NxXbox
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#endif // __BILLBOARD_H
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