Celestin Apprentice 5/Apprentice-Release5.iso/Source Code/Libraries/3D Class Library/3dcl.h

Text File | 1996-06-27 | 5KB | 251 lines

// =======================================================================
//    3D Class Library, © Xilex Group
// - ------------------------------------------------------------------- -
//    Written by Dmitry Boldyrev
// =======================================================================

#pragma once

#include "types.h"
#include "cosin.h"
#include <math.h>

#include "LinkList.h"

typedef WORD matrix3d[3][3];

typedef struct
{
    WORD     x;                    //    x coordinate in space
    WORD    y;                    //    y coordinate in space
    WORD    z;                    //    z coordinate in space
} vector3d;

typedef struct
{
    WORD     x;                    //    x projected coordinate
    WORD    y;                    //    y projected coordinate
    WORD    c;                    //    color/intensity of the edge
    WORD    u;                    //    x texture coordinate
    WORD    v;                    //    y texture coordinate
} upoint;

enum {
    isVertex,                    //    vertex is a VERTEX
    isNormal                    //    vertex is a normal
};

class vertex : public ListNode
{
    public:
        vector3d    xyz;        // xyz coordinate in space
        upoint        xy;            // xy coordinate on the projected plane
        vector3d    normal;        // average normal to the vertex
        WORD         nCount;        // how many normals were added to compute the average

        WORD        mKind;        // isVertex or isNormal?

        // =======================================================================
        //    Constructors
        // =======================================================================

        vertex();
        vertex(WORD x, WORD y, WORD z, WORD inKind);

        void setTo(WORD x, WORD y, WORD z, WORD inKind);

        void xform2d();
        void setNewOrigin(vertex *p);
        void globalXform2origin(vertex *p);
        void copyOrigin(vertex *p);

        // =======================================================================
        //    Rotations/Translations stuff
        // =======================================================================

        void localRotate(matrix3d mat);
        void translate(WORD dX, WORD dY, WORD dZ);

        // =======================================================================
        //    Normal computations
        // =======================================================================

        void zeroNormal();
        void addNormal(WORD dX, WORD dY, WORD dZ);
        void avgNormal();

        virtual ~vertex();

    protected:
};

WORD dotProduct(const vector3d *p1, const vector3d *p2);

typedef struct
{
    WORD p1, p2, p3, color;
} polyRec;

enum {
    sNone = 0,
    sWire,
    sFlat,
    sGouraud,
    sTexMap,
    sGouraudTexMap
};

enum {
    tx32x32,
    tx64x64,
    tx128x128,
    tx256x256,
    tx512x512
};

class polygon : public ListNode
{
    public:

        vertex *p1, *p2, *p3, normal;

        polygon();
        polygon(vertex *v1, vertex *v2, vertex *v3);

        void calcThetaPhi(vector3d v, WORD &theta, WORD &phi);

        void setTo(vertex *v1, vertex *v2, vertex *v3);

        WORD calcAvgZ();

        void setNewOrigin(vertex *p);

        void localRotate(matrix3d mat);
        void globalRotate(matrix3d mat);

        void setGNormals();

        void renderGouraudTexMap();
        void renderTexMap();
        void renderGouraud();
        void renderWire();
        void renderFlat();
        void renderNone();

        void renderPoly(BYTE method);
        void applyTexture(WORD width, WORD height, WORD depth);

           ~polygon();

        WORD    averageZ;
    protected:
};

typedef struct
{
    WORD numPoints, numPolys;
} objFileHeader;

class object3d : public ListNode
{
    public:

        object3d();

        void save(char *fname);
        void load(char *fname);
        void importV3D(char *fname);
        void importASC(char *fname);

        void addLocalPoint(WORD x, WORD y, WORD z, WORD inKind);
        void addLocalPoint(vertex *p);

        void addLocalPoly(WORD p1, WORD p2, WORD p3);
        void addLocalPoly(polygon *pg);

        WORD getPointNum(vertex *p);
        vertex *getPointAddr(WORD pNum);

        void localRotate();
        void makeRotMatrix(WORD alpha, WORD theta, WORD phi);

        void translate(WORD dX, WORD dY, WORD dZ);
        void setLocation(WORD x, WORD y, WORD z);

        void sortPlanes();

        void zeroGNormals();
        void setGNormals();
        void display();

        void applyTexture();
        void calcBounds(WORD &width, WORD &height, WORD &depth);
        virtual ~object3d();

        LinkList points;
        LinkList polys;
        WORD      count, xDeg, yDeg, zDeg;

    protected:
        Stack         stack1[256], stack2[256];
        matrix3d      mat;
};

class world3d
{
    public:

        world3d();
        virtual ~world3d();
        void globalRotate(WORD tX, WORD tY, WORD tZ);
        void insertObject(object3d *object);
        void deleteObject(object3d *object, BOOL doDisposeIt = TRUE);
        void draw();

    protected:

        LinkList objects;
        WORD      xDeg, yDeg, zDeg;
};
class viewPoint
{

public:

    vector3d location, light, view;

    viewPoint();

    void rotate(int tX, int tY, int tZ);
    void translate(int dX, int dY, int dZ);

    ~viewPoint();

private:


};

#define ABS(x) (((x) < 0) ? -(x) : (x))

extern world3d world;
extern viewPoint camera;

extern WORD matrix[9];
extern WORD *perspect;

extern Point middle;
extern Ptr baseAddr;
extern short rowBytes;

#define    SQR(x)    ((x) * (x))
#define    SQRT(x)    (sqrt(x))

extern WORD startx[480], endx[480], startcol[480], endcol[480];

void ASM_GouraudPoly(upoint p1, upoint p2, upoint p3);
void C_GouraudPoly(upoint p1, upoint p2, upoint p3);
void C_TexturePoly(upoint p1, upoint p2, upoint p3);