/******************************************************************************

 **                                                                          **

 **     Module:     SR_Point.c                                               **

 **                                                                          **

 **                                                                          **

 **     Purpose:    Point routines                                           **

 **                                                                          **

 **                                                                          **

 **                                                                          **

 **     Copyright (C) 1996 Apple Computer, Inc.  All rights reserved.        **

 **                                                                          **

 **                                                                          **

 *****************************************************************************/

#include <assert.h>

#include "QD3D.h"

#include "SR.h"

/*===========================================================================*\

 *

 *  Routine:    SR_Geometry_Point()

 *

 *  Comments:   

 *

\*===========================================================================*/

TQ3Status SR_Geometry_Point(

    TQ3ViewObject           view, 

    TSRPrivate              *srPrivate,

    TQ3GeometryObject       point,

    const TQ3PointData      *pointData)

{

    TQ3Boolean              highlightState;

    TQ3XClipMaskState       clipMaskState;

    TQ3ColorRGB             color;

    UNUSED(point);

    assert(view         != NULL);

    assert(srPrivate    != NULL);

    assert(pointData    != NULL);

    /*

     *  Call the application's idle progress method, via the view.  If

     *  the app's method returns kQ3Failure, then we don't go on.

     */

    if (SR_IdleProgress(view, srPrivate) == kQ3Failure) {

        return (kQ3Success);

    }

    if (srPrivate->drawRegion == NULL) {

        return (kQ3Success);

    }

    /*

     *  Find out if we're clipped out or not. No reason to go any

     *  further if the region is obscured or entirely off-screen. 

     */

    Q3XDrawRegion_GetClipFlags(srPrivate->drawRegion, &clipMaskState);

    if (clipMaskState == kQ3XClipMaskNotExposed) {

        return (kQ3Failure);

    }

    /*

     *  Lazy-evaluate the various transforms for the pipeline

     */

    if (SR_UpdatePipeline(srPrivate) == kQ3Failure) {

        return (kQ3Failure);

    }

    /*

     *  Highlight state and  color are from the view, unless

     *  overridden by the lineAttributeSet

     */

    highlightState  = srPrivate->viewHighlightState;

    color           = srPrivate->viewDiffuseColor;

    /*

     *  Check if we have a point attribute set.

     *  If so, then see if we can get a color and highlight state

     *  out of it. 

     */

    if (pointData->pointAttributeSet != NULL) {

        TQ3XAttributeMask   attributeMask;

        attributeMask = Q3XAttributeSet_GetMask(pointData->pointAttributeSet);

        if (attributeMask & kQ3XAttributeMaskDiffuseColor) {

            Q3AttributeSet_Get(

                pointData->pointAttributeSet, 

                kQ3AttributeTypeDiffuseColor, 

                &color);

        }

        if (attributeMask & kQ3XAttributeMaskHighlightState) {

            Q3AttributeSet_Get(

                pointData->pointAttributeSet, 

                kQ3AttributeTypeHighlightState, 

                &highlightState);

        }

    }

    /*

     *  If we're highlighting, then see if we can get a highlight color

     *  out of the view's attribute set. Use that as the color, if it's there.

     */

    if ((highlightState == kQ3True) &&

        (srPrivate->viewHighlightAttributeSet != NULL)) {

        TQ3XAttributeMask   attributeMask;

        attributeMask = Q3XAttributeSet_GetMask(

                            srPrivate->viewHighlightAttributeSet);

        if (attributeMask & kQ3XAttributeMaskDiffuseColor) {

            Q3AttributeSet_Get( 

                srPrivate->viewHighlightAttributeSet, 

                kQ3AttributeTypeDiffuseColor, 

                &color);

        }

    }

    if (SR_PointPipe(

            srPrivate, 

            (TQ3Point3D *) &pointData->point, 

            1, 

            sizeof(TQ3Vertex3D),

            &color,

            NULL,

            DO_POLYLINE) == kQ3Failure) {

        return (kQ3Failure);

    }

    return (kQ3Success);

}