// My3dSupport.c - QuickDraw 3d routines

//

// This file contains utility routines for QuickDraw 3d sample code.

//

// Created 27th Dec 1994, Nick Thompson, DEVSUPPORT

//

// Modification History:

//

//  12/27/94        nick        initial version

//  12/31/94        nick        add support for error library routines

//  10/01/95        nick        adjustments for simple box program

//  03/22/95        rdd         added geometry sample code. Updated for B1C2e7

//                              draw context and picking changes.

//                              Press any digit 1 through 9 to select a trigrid

//                              and hold down control to render the trigrid with

//                              texture map.

//  04/12/95        rdd         deleted MyColorBoxFaces and other unused routines.

#include <QuickDraw.h>

#include <QDOffScreen.h>

#include "TriGrid3DSupport.h"

#include "GeometrySample.h"

#include "QD3DDrawContext.h"

#include "QD3DRenderer.h"

#include "QD3DShader.h"

#include "QD3DCamera.h"

#include "QD3DLight.h"

#include "QD3DGeometry.h"

#include "QD3DGroup.h"

#include "QD3DMath.h"

#include "QD3DSet.h"

#include "QD3DTransform.h"

TQ3ViewObject MyNewView(WindowPtr theWindow)

{

    TQ3Status               myStatus;

    TQ3ViewObject           myView;

    TQ3DrawContextObject    myDrawContext;

    TQ3RendererObject       myRenderer;

    TQ3CameraObject         myCamera;

    TQ3GroupObject          myLights;

    myView = Q3View_New();

    //  Create and set draw context.

    if ((myDrawContext = MyNewDrawContext(theWindow)) == nil )

        goto bail;

    if ((myStatus = Q3View_SetDrawContext(myView, myDrawContext)) == kQ3Failure )

        goto bail;

    Q3Object_Dispose( myDrawContext ) ;

    //  Create and set renderer.

    // this would use the interactive software renderer

    if ((myRenderer = Q3Renderer_NewFromType(kQ3RendererTypeInteractive)) != nil ) {

        if ((myStatus = Q3View_SetRenderer(myView, myRenderer)) != kQ3Failure ) {

            Q3InteractiveRenderer_SetDoubleBufferBypass(myRenderer, kQ3True);

        } 

        else {

            goto bail;

        }

    }

    else {

        // this would use the wireframe renderer

        if ((myRenderer = Q3Renderer_NewFromType(kQ3RendererTypeWireFrame)) != nil ) {

            if ((myStatus = Q3View_SetRenderer(myView, myRenderer)) != kQ3Failure ) {

            } 

            else {

                goto bail;

            }

        }

    }

    Q3Object_Dispose( myRenderer ) ;

    //  Create and set camera.

    if ( (myCamera = MyNewCamera(theWindow)) == nil )

        goto bail;

    if ((myStatus = Q3View_SetCamera(myView, myCamera)) == kQ3Failure )

        goto bail;

    Q3Object_Dispose( myCamera ) ;

    //  Create and set lights.

    if ((myLights = MyNewLights()) == nil )

        goto bail;

    if ((myStatus = Q3View_SetLightGroup(myView, myLights)) == kQ3Failure )

        goto bail;

    Q3Object_Dispose(myLights);

    //  Done!!!

    return ( myView );

bail:

    //  If any of the above failed, then don't return a view.

    return ( nil );

}

//----------------------------------------------------------------------------------

TQ3DrawContextObject MyNewDrawContext(WindowPtr theWindow)

{

    TQ3DrawContextData      myDrawContextData;

    TQ3MacDrawContextData   myMacDrawContextData;

    TQ3ColorRGB             clearColor;

    TQ3DrawContextObject    myDrawContext ;

    //  Set the background color.

    Q3ColorRGB_Set(&clearColor, 0.2, 0.0, 1.0);

    //  Fill in draw context data.

    myDrawContextData.clearImageMethod = kQ3ClearMethodWithColor;

    myDrawContextData.clearImageColor.a = 1.0;

    myDrawContextData.clearImageColor.r = clearColor.r;

    myDrawContextData.clearImageColor.g = clearColor.g;

    myDrawContextData.clearImageColor.b = clearColor.b;

    myDrawContextData.paneState = kQ3False;

    myDrawContextData.maskState = kQ3False;

    myDrawContextData.doubleBufferState = kQ3True;

    myMacDrawContextData.drawContextData = myDrawContextData;

    myMacDrawContextData.window = (CGrafPtr) theWindow;     // this is the window associated with the view

    myMacDrawContextData.library = kQ3Mac2DLibraryNone;

    myMacDrawContextData.viewPort = nil;

    myMacDrawContextData.grafPort = nil;

    //  Create draw context and return it, if itÕs nil the caller must handle

    myDrawContext = Q3MacDrawContext_New(&myMacDrawContextData) ;

    return myDrawContext ;

}

//----------------------------------------------------------------------------------

TQ3CameraObject MyNewCamera(WindowPtr theWindow)

{

    TQ3ViewAngleAspectCameraData    perspectiveData;

    TQ3CameraObject             camera;

    TQ3Point3D                  from    = {-5.0, 5.0, 11.0 };

    TQ3Point3D                  to      = { 0.0, 0.0,  0.0 };

    TQ3Vector3D                 up      = { 0.0, 1.0,  0.0 };

    float                       fieldOfView = .52359333333;

    float                       hither      =  0.001;

    float                       yon         =  1000;

    TQ3Status                   returnVal = kQ3Failure ;

    perspectiveData.cameraData.placement.cameraLocation     = from;

    perspectiveData.cameraData.placement.pointOfInterest    = to;

    perspectiveData.cameraData.placement.upVector           = up;

    perspectiveData.cameraData.range.hither = hither;

    perspectiveData.cameraData.range.yon    = yon;

    perspectiveData.cameraData.viewPort.origin.x = -1.0;

    perspectiveData.cameraData.viewPort.origin.y = 1.0;

    perspectiveData.cameraData.viewPort.width  = 2.0;

    perspectiveData.cameraData.viewPort.height = 2.0;

    perspectiveData.fov             = fieldOfView;

    perspectiveData.aspectRatioXToY =

        (float) (theWindow->portRect.right - theWindow->portRect.left) / 

        (float) (theWindow->portRect.bottom - theWindow->portRect.top);

    camera = Q3ViewAngleAspectCamera_New(&perspectiveData);

    return camera ;

}

//----------------------------------------------------------------------------------

TQ3GroupObject MyNewLights()

{

    TQ3GroupPosition        myGroupPosition;

    TQ3GroupObject          myLightList;

    TQ3LightData            myLightData;

    TQ3PointLightData       myPointLightData;

    TQ3DirectionalLightData myDirectionalLightData;

    TQ3LightObject          myAmbientLight, myPointLight, myFillLight;

    TQ3Point3D              pointLocation = { -10.0, 0.0, 10.0 };

    TQ3Vector3D             fillDirection = { 10.0, 0.0, 10.0 };

    TQ3ColorRGB             WhiteLight = { 1.0, 1.0, 1.0 };

    //  Set up light data for ambient light.  This light data will be used for point and fill

    //  light also.

    myLightData.isOn = kQ3True;

    myLightData.color = WhiteLight;

    //  Create ambient light.

    myLightData.brightness = .2;

    myAmbientLight = Q3AmbientLight_New(&myLightData);

    if ( myAmbientLight == nil )

        goto bail;

    //  Create point light.

    myLightData.brightness = 1.0;

    myPointLightData.lightData = myLightData;

    myPointLightData.castsShadows = kQ3False;

    myPointLightData.attenuation = kQ3AttenuationTypeNone;

    myPointLightData.location = pointLocation;

    myPointLight = Q3PointLight_New(&myPointLightData);

    if ( myPointLight == nil )

        goto bail;

    //  Create fill light.

    myLightData.brightness = .2;

    myDirectionalLightData.lightData = myLightData;

    myDirectionalLightData.castsShadows = kQ3False;

    myDirectionalLightData.direction = fillDirection;

    myFillLight = Q3DirectionalLight_New(&myDirectionalLightData);

    if ( myFillLight == nil )

        goto bail;

    //  Create light group and add each of the lights into the group.

    myLightList = Q3LightGroup_New();

    if ( myLightList == nil )

        goto bail;

    myGroupPosition = Q3Group_AddObject(myLightList, myAmbientLight);

    if ( myGroupPosition == 0 )

        goto bail;

    myGroupPosition = Q3Group_AddObject(myLightList, myPointLight);

    if ( myGroupPosition == 0 )

        goto bail;

    myGroupPosition = Q3Group_AddObject(myLightList, myFillLight);

    if ( myGroupPosition == 0 )

        goto bail;

    Q3Object_Dispose( myAmbientLight ) ;

    Q3Object_Dispose( myPointLight ) ;

    Q3Object_Dispose( myFillLight ) ;

    //  Done!

    return ( myLightList );

bail:

    //  If any of the above failed, then return nothing!

    return ( nil );

}

//----------------------------------------------------------------------------------

TQ3GroupObject MyNewModel()

{

    TQ3GroupObject          myGroup = NULL;

    TQ3ShaderObject         myIlluminationShader;

    // Create a group for the complete model.

    // do not use Q3OrderedDisplayGroup_New since in this

    // type of group all of the translations are applied before

    // the objects in the group are drawn, in this instance we 

    // dont want this.

    if ((myGroup = Q3DisplayGroup_New()) != NULL ) {

        // Define a shading type for the group

        // and add the shader to the group

        myIlluminationShader = Q3PhongIllumination_New();

        Q3Group_AddObject(myGroup, myIlluminationShader);

    }

    // dispose of the objects we created here

    if( myIlluminationShader ) 

        Q3Object_Dispose(myIlluminationShader); 

    //  Done!

    return ( myGroup );

}