vxllayer.h

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/*
**  Command & Conquer Generals Zero Hour(tm)
**  Copyright 2025 Electronic Arts Inc.
**
**  This program is free software: you can redistribute it and/or modify
**  it under the terms of the GNU General Public License as published by
**  the Free Software Foundation, either version 3 of the License, or
**  (at your option) any later version.
**
**  This program is distributed in the hope that it will be useful,
**  but WITHOUT ANY WARRANTY; without even the implied warranty of
**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
**  GNU General Public License for more details.
**
**  You should have received a copy of the GNU General Public License
**  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
 
/* $Header: /Commando/Code/Tools/max2w3d/vxllayer.h 3     10/28/97 6:08p Greg_h $ */
/*********************************************************************************************** 
 ***                            Confidential - Westwood Studios                              *** 
 *********************************************************************************************** 
 *                                                                                             * 
 *                 Project Name : Commando Tools - W3D export                                  * 
 *                                                                                             * 
 *                     $Archive:: /Commando/Code/Tools/max2w3d/vxllayer.h                     $* 
 *                                                                                             * 
 *                      $Author:: Greg_h                                                      $* 
 *                                                                                             * 
 *                     $Modtime:: 10/26/97 1:35p                                              $* 
 *                                                                                             * 
 *                    $Revision:: 3                                                           $* 
 *                                                                                             * 
 *---------------------------------------------------------------------------------------------* 
 * Functions:                                                                                  * 
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 
 
#ifndef VXLLAYER_H
#define VXLLAYER_H
 
#include <Max.h>
 
 
#ifndef BITTYPE_H
#include "bittype.h"
#endif
 
#ifndef NODELIST_H
#include "nodelist.h"
#endif
 
const sint8 VOXEL_VISIBLE = 0;            // voxels that are "outside" the object
const sint8 VOXEL_SOLID = 1;                // voxels that are part of the object
const sint8 VOXEL_UNKNOWN = -1;           // either inside or outside, don't know yet
const int max_bitmap_width = 256;
const int max_bitmap_height = 256;
 
 
class VoxelLayerClass
{
public:
 
    VoxelLayerClass();
    
    VoxelLayerClass
    (
        INodeListClass        & objectlist,
        TimeValue           time,
        Matrix3              parenttm,
        Point3              offset,
        Point3              scale,
        float                   slicez,
        float                   sliceh,
        int                 bmwidth,
        int                 bmheight
    );
 
    ~VoxelLayerClass() {};
 
    BOOL Is_Visible( int x, int y )
    {
        if (x < 0 || x >= bitmap_width || y < 0 || y >= bitmap_height) {
            return TRUE;
        }
 
        if (Solid[x][y] == 0) {
            return TRUE;
        } else {
            return FALSE;
        }
    }
 
    BOOL Is_Solid( int x, int y )
    {
        if (x < 0 || x >= bitmap_width || y < 0 || y >= bitmap_height) {
            return FALSE;
        }
 
        if (Solid[x][y] == VOXEL_SOLID) { 
            return TRUE;
        } else {
            return FALSE;
        }
    }
 
    unsigned int Get_Width(void) { return bitmap_width; }
    unsigned int Get_Height(void) { return bitmap_height; }
 
protected:
 
    void Set_Visible ( int x, int y )
    {
        if (x >= 0 && x < bitmap_width && y >= 0 && y < bitmap_height &&   Solid[x][y] != VOXEL_SOLID )
        {
            Solid[x][y] = VOXEL_VISIBLE;
        }
    }
 
    void Add_Solid(int x,int y) 
    {
        // check if the point is outside the bitmap:
        if (x >= 0 && x < bitmap_width && y >= 0 && y < bitmap_height) {
            Solid[x][y] = VOXEL_SOLID;
        }
    }
 
    // draw a line of voxels into the bitmap
    void Draw_Line(double x0,double y0,double x1,double y1);
 
    // draw the intersection between the triangle and the voxel plane
    void Intersect_Triangle(Point3 a,Point3 b,Point3 c,float z);
 
    // scan convert the polygon fragment in this voxel slab
    void Scan_Triangle(Point3 a,Point3 b,Point3 c);
 
    sint8      Solid[max_bitmap_width][max_bitmap_height];
 
    float       SliceZ;
    float       SliceH;
    float       SliceZ0;
    float       SliceZ1;
 
    int     bitmap_width;
    int     bitmap_height;
};
 
 
#endif /*VXLLAYER_H*/