src/dpgIO.c

/******************************************************************************
 **                                                                          **
 **     Module:     dpgIO.c                                                  **
 **                                                                          **
 **                                                                          **
 **                                                                          **
 **                                                                          **
 **                                                                          **
 **     Copyright (C) 1995-1996 Apple Computer, Inc.  All rights reserved.   **
 **                                                                          **
 **                                                                          **
 *****************************************************************************/
 
#include "dpg.h"
#include "dpgIO.h"
#include "dpgMemory.h"
 
/*===========================================================================*\
 *
 *  Routine:    exDistanceProxyDistanceList_Read()
 *
 *  Comments:   
 *
\*===========================================================================*/
static TQ3Status exDistanceProxyDistanceList_Read(
    TQ3GroupObject      group,
    TQ3FileObject       file)
{
    unsigned long   flag;
    float           distance;
    unsigned long   i, cnt;
 
    TQ3DistanceProxyDisplayGroupPrivate *gPriv;
    
    gPriv = DPG_GETPRIVATE(group);
    
    if (Q3Uns32_Read(&cnt, file) == kQ3Failure)
        return kQ3Failure;
    
    for (i=0, gPriv->distIOTblCnt = 0; i < cnt; i++) 
    {
        if (Q3Uns32_Read(&flag, file) == kQ3Failure)
            return kQ3Failure;
        
        if (Q3Float32_Read(&distance, file) == kQ3Failure)
            return kQ3Failure;
            
        if (flag == kQ3True) {
            gPriv->distIOTbl = dpgRealloc(
                                    gPriv->distIOTbl, 
                                    sizeof(TQ3DistanceIOData) * (gPriv->distIOTblCnt+1));
            if (!gPriv->distIOTbl)
            {
                gPriv->distIOTblCnt = 0;
                dpgFree(gPriv->distIOTbl);
                gPriv->distIOTbl = 0;
                return kQ3Failure;
            }               
            gPriv->distIOTbl[gPriv->distIOTblCnt].distance = distance;
            gPriv->distIOTbl[gPriv->distIOTblCnt].index    = i;
    
            gPriv->distIOTblCnt++;
        }
    }
    return kQ3Success;
}
 
/*===========================================================================*\
 *
 *  Routine:    exDistanceProxyDistanceList_Traverse()
 *
 *  Comments:   
 *
\*===========================================================================*/
static unsigned long exDistanceProxyDistanceList_Traverse(
    TQ3GroupObject      group)
{
    TQ3DistanceProxyDisplayGroupPrivate *gPriv;
    unsigned long size = 0;
    
    gPriv = DPG_GETPRIVATE(group);
    
    Q3Group_CountObjects(group, &size);
 
    size =  4 /* unsigned long */ + 
            (size *  (4 /* boolean */ + 4 /* float */));
            
    return size;
}
 
/*===========================================================================*\
 *
 *  Routine:    exDistanceProxyDistanceList_Write()
 *
 *  Comments:   
 *
\*===========================================================================*/
static TQ3Status exDistanceProxyDistanceList_Write(
    TQ3GroupObject          group,
    TQ3FileObject           file)
{
    TQ3DistanceProxyDisplayGroupPrivate *gPriv;
    TQ3GroupPosition                    position;
    unsigned long                       cnt;
    
    gPriv = DPG_GETPRIVATE(group);
    
    if (Q3Comment_Write("Distance Pair", file) == kQ3Failure)
        return kQ3Failure;
 
    Q3Group_CountObjects(group, &cnt);
 
    if ((Q3Uns32_Write(cnt, file) == kQ3Failure) ||
        (Q3Comment_Write("Count", file) == kQ3Failure))
        return kQ3Failure;
 
    for (Q3Group_GetFirstPosition(group, &position); position != NULL;)
    {
        float distance;
        unsigned long flag;
 
        flag = (unsigned long)exDistanceProxyGroup_GetDistanceAtPosition(group, position, &distance);
        
        if ((Q3Uns32_Write(flag, file) == kQ3Failure) ||
            (Q3Float32_Write(distance, file) == kQ3Failure) ||
            (Q3NewLine_Write(file) == kQ3Failure))
            return kQ3Failure;
 
        Q3Group_GetNextPosition(group, &position);
    } 
    
    return kQ3Success;
}
    
/*===========================================================================*\
 *
 *  Routine:    exDistanceProxyGroup_Read()
 *
 *  Comments:   
 *
\*===========================================================================*/
TQ3GroupObject exDistanceProxyGroup_Read(
    TQ3FileObject       file)
{
    TQ3Point3D      refPt;
    unsigned long   flags;
    TQ3GroupObject  group;
    
    /* XXX EiFileReadState_BeginGroup(file); */
    
    if ((Q3Point3D_Read(&refPt, file) == kQ3Failure) ||
        (Q3Uns32_Read(&flags, file) == kQ3Failure))
        return NULL;
        
    group = exDistanceProxyGroup_New(&refPt, flags);
    
    if (group == NULL)
        return NULL;
        
    if (exDistanceProxyDistanceList_Read(group, file) == kQ3Failure)
    {
        Q3Object_Dispose(group);
        group = NULL;
    }
 
    return group;
}
 
/*===========================================================================*\
 *
 *  Routine:    exDistanceProxyGroup_Traverse()
 *
 *  Comments:   
 *
\*===========================================================================*/
TQ3Status exDistanceProxyGroup_Traverse(
    TQ3GroupObject      group,
    void                *unused,
    TQ3ViewObject       view)
{
    unsigned long size;
    
    unused; /* Unused */
    
    /*
    TQ3Point3D      refPt   = (float * 3) = 12
    unsigned long   flags   = 4
    
    total size = 16
    */
    
    size = 16 + exDistanceProxyDistanceList_Traverse(group);
    
    if (Q3XView_SubmitWriteData(view, size, group, NULL) == kQ3Failure)
        return kQ3Failure;
        
    //if (EiView_TraverseObjectClass(view, EgDisplayGroupStateClass, group) == kQ3Failure)
    //  return kQ3Failure;
    
    return kQ3Success;
}
 
/*===========================================================================*\
 *
 *  Routine:    exDistanceProxyGroup_Write()
 *
 *  Comments:   
 *
\*===========================================================================*/
 
TQ3Status exDistanceProxyGroup_Write(
    TQ3GroupObject      group,
    TQ3FileObject       file)
{
    TQ3DistanceProxyDisplayGroupPrivate *gPriv;
    unsigned long size = 0;
    
    gPriv = DPG_GETPRIVATE(group);
    
    if ((Q3NewLine_Write(file) == kQ3Failure) ||
        (Q3Point3D_Write(&gPriv->refPt, file) == kQ3Failure) ||
        (Q3Comment_Write("reference point", file) == kQ3Failure) ||
        (Q3Uns32_Write(gPriv->flag, file) == kQ3Failure) ||
        (Q3Comment_Write("flag", file) == kQ3Failure) ||
        (exDistanceProxyDistanceList_Write(group, file) == kQ3Failure))
            return kQ3Failure;
    
    return kQ3Success;
}


Copyright © 2003 Apple Computer, Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2003-01-14