Info-Mac 1992 August/info-mac-1992.iso/Source/3D GrafSys/GrafSys.rel/Demo Sources/xFighter Clip⁄persp

Text File | 1992-04-25 | 5KB | 189 lines

program xFighterDemo2;

{ 3d GrafSys Demo Program}
{ Vers. 1.1 }
{ (c) 1992 by Christian Franz }

{ This program demonstates the use of the grafsys for simple animation using }
{ the screenObjects                                                                                        }

{ note that you can also move the eye by pressing the corresponding keys }

    uses
(* Matrix, Transformations, Data3D,*)
        Grafsys, Screen3D;

    const
        theWindowID = 400;
        degree = 0.01745329; (* π/180 *)

    var
        theWindow: WindowPtr;
        theInt: INTEGER;
        thePort: Graf3DPtr;
        theMaster: Graf3DPtr;
        Pyramid, Cube, xFighter: GrafObjPtr;
        theEvent: EventRecord;
        dx, dy, dz: integer;
        r, PR, VR: Rect;
        SO: ScreenObjPtr;
        dummy: boolean;


    procedure getmouserot (var dx, dy, dz: integer);

        var
            thePoint: point;

    begin
        GetMouse(thePoint);
        dx := 0;
        dy := 0;
        dz := 0;
        if (thePoint.h < thePort^.center.h) and (thePoint.v < thePort^.center.v) then (* mouse in quadrant 1 -> xrot*)
            begin
                dx := 5;
            end;
        if (thePoint.h > thePort^.center.h) and (thePoint.v < thePort^.center.v) then (* mouse in quadrant 2 -> yrot*)
            begin
                dy := 5;
            end;
        if (thePoint.h > thePort^.center.h) and (thePoint.v > thePort^.center.v) then (* mouse in quadrant 3 -> zrot*)
            begin
                dz := 5;
            end;
        if (thePoint.h < thePort^.center.h) and (thePoint.v > thePort^.center.v) then (* mouse in quadrant 4 -> idle*)
            begin
            end;
        if button then
            begin
                dx := -dx;
                dy := -dy;
                dz := -dz;
            end;
    end;

    const
        closer = 58;  (* option Key *)
        further = 55; (* command key *)
        haltkey = 76; (* keypad enter *)

        leftArrow = $7B;
        rightArrow = $7C;
        upArrow = $7E;
        downArrow = $7D;

        num1 = $53;
        num2 = $54;

    var

        theKeys: KeyMap;
        theta, phi: integer;
        pitch: integer;
        update: boolean;

begin
    InitCursor;
    theWindow := GetNewWindow(theWindowID, nil, Pointer(-1));
    SetPort(theWindow); (* draw in this window *)

    MoveTo(10, 10);
    DrawString('3D GrafSys.      Object:x-Fighter (Clip/persp).    (C) 1992 by CF.');
    InitGrafSys;
    NewGrafport(theWindow^.portRect, thePort);

    MoveTo(10, 25 * 15);
    DrawString('Descr. : Press Keypad-Enter to stop');
    MoveTo(10, 26 * 15);
    DrawString('            Option to zoom closer');
    MoveTo(10, 27 * 15);
    DrawString('            Command to move further away');
    MoveTo(10, 28 * 15);
    DrawString('            Move mouse into fighter to rotate it');

    PR := theWindow^.PortRect;
    SetRect(VR, thePort^.center.h - 0, thePort^.center.v - 100, thePort^.center.h + 220, thePort^.center.v + 100);
    r := VR;
    for dx := 1 to 3 do
        begin
            InsetRect(r, -2, -2);
            FrameRect(r);
        end;
    SetView(PR, VR);
    SetCenter(thePort^.center.h + 120, thePort^.center.v);

    xFighter := GetNewNamedObject('theFighter');

    SetEye(true, 0, 0, -200, 0 * degree, 0 * degree, 0 * degree, 1.54079633, true);
    ObjTranslate(xFighter, 0, 0, 0);
    ObjRotate(xFighter, 0 * degree, 0 * degree, 0);
    SetAutoErase(xFighter, true);
    SO := NewScreenObject;
    AttachScreenObject(SO, xFighter); (* Link for all changes *)
    CalcScreenObject(xFighter, TRUE);
    DrawScreenObject(xFighter);
    phi := 0;
    theta := 0;
    pitch := 0;

    repeat
        GetMouseRot(dx, dy, dz);
        if (dx + dy + dz <> 0) or (theKeys[closer]) or (theKeys[further]) or update then
            DrawScreenObject(xFighter); (* draw Object *)
        update := false;
        ObjRotate(xFighter, dx * degree, dy * degree, dz * degree);

        GetKeys(theKeys);
        if theKeys[further] then
            ObjTranslate(xFighter, 0, 0, 10);
        if theKeys[closer] then
            ObjTranslate(xFighter, 0, 0, -10);
        if theKeys[leftArrow] then
            begin
                theta := (theta + 5) mod 355;
                SetEye(true, 0, 0, -200, phi * degree, theta * degree, pitch * degree, 1.54079633, true);
                update := true;
            end;

        if theKeys[rightArrow] then
            begin
                theta := (theta - 5) mod 355;
                SetEye(true, 0, 0, -200, phi * degree, theta * degree, pitch * degree, 1.54079633, true);
                update := true;
            end;

        if theKeys[upArrow] then
            begin
                phi := (phi + 5) mod 355;
                SetEye(true, 0, 0, -200, phi * degree, theta * degree, pitch * degree, 1.54079633, true);
                update := true;
            end;

        if theKeys[downArrow] then
            begin
                phi := (phi - 5) mod 355;
                SetEye(true, 0, 0, -200, phi * degree, theta * degree, pitch * degree, 1.54079633, true);
                update := true;
            end;

        if theKeys[num1] then
            begin
                pitch := (pitch + 5) mod 355;
                SetEye(true, 0, 0, -200, phi * degree, theta * degree, pitch * degree, 1.54079633, true);
                update := true;
            end;

        if theKeys[num2] then
            begin
                pitch := (pitch - 5) mod 355;
                SetEye(true, 0, 0, -200, phi * degree, theta * degree, pitch * degree, 1.54079633, true);
                update := true;
            end;

        CCalcScreenObject(xFighter, TRUE);
    until theKeys[haltkey];
    repeat
        dummy := GetNextEvent(everyEvent, theEvent);
    until theevent.what = mousedown;
end.