OpenSceneGraph/src/osgPlugins/txp/trpage_range.cpp

/* ************************
   Copyright Terrain Experts Inc.
   Terrain Experts Inc (TERREX) reserves all rights to this source code
   unless otherwise specified in writing by the President of TERREX.
   This copyright may be updated in the future, in which case that version
   supercedes this one.
   -------------------
   Terrex Experts Inc.
   4400 East Broadway #314
   Tucson, AZ  85711
   info@terrex.com
   Tel: (520) 323-7990
   ************************
   */

/* trpage_range.cpp
    Methods for the Range Table.  Consult trpg_geom.h for details
    on what this is and how it works.
    */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "trpage_geom.h"
#include "trpage_read.h"

/* *******************
    Range Methods
   *******************
 */

trpgRange::trpgRange(void)
{
    category = NULL;
    subCategory = NULL;
    Reset();
}

trpgRange::~trpgRange(void)
{
    Reset();
}

trpgRange::trpgRange(const trpgRange &in):trpgReadWriteable()
{
    *this = in;
}

void trpgRange::Reset(void)
{
    if (category)
        delete [] category;
    category = NULL;
    if (subCategory)
        delete [] subCategory;
    subCategory = NULL;

    inLod = outLod = 0.0;
    priority = 0;
}

void trpgRange::SetCategory(char *cat,char *subCat)
{
    if (category)  delete [] category;
    category = NULL;
    if (cat) {
        category = new char[strlen(cat)+1];
        strcpy(category,cat);
    }

    if (subCategory)  delete [] subCategory;
    subCategory = NULL;
    if (subCat) {
        subCategory = new char[strlen(subCat)+1];
        strcpy(subCategory,subCat);
    }
}

void trpgRange::GetCategory(char *cat,int catLen,char *subCat,int subCatLen) const
{
    if (category && cat) {
        strncpy(cat,category,catLen);
    } else
        *cat = 0;
    if (subCategory && subCat) {
        strncpy(subCat,subCategory,subCatLen);
    } else
        *subCat = 0;
}

void trpgRange::SetLodInfo(double in,double out)
{
    inLod = in;
    outLod = out;
}

void trpgRange::GetLodInfo(double &in,double &out) const
{
    in = inLod;
    out = outLod;
}

void trpgRange::SetPriority(int prior)
{
    priority = prior;
}

void trpgRange::GetPriority(int &prior) const
{
    prior = priority;
}

trpgRange & trpgRange::operator = (const trpgRange &other)
{
    Reset();
    inLod = other.inLod;
    outLod = other.outLod;
    SetCategory(other.category,other.subCategory);
    priority = other.priority;

    return *this;
}

bool trpgRange::operator == (const trpgRange &in) const
{
    if (inLod != in.inLod || outLod != in.outLod)
        return false;
    if (priority != in.priority)  return false;

    if (category && in.category) {
        if (strcmp(category,in.category))
            return false;
    } else {
        if (category && !in.category ||
            !category && in.category)
            return false;
    }

    if (subCategory && in.subCategory) {
        if (strcmp(subCategory,in.subCategory))
            return false;
    } else {
        if (subCategory && !in.subCategory ||
            !subCategory && in.subCategory)
            return false;
    }

    return true;
}

bool trpgRange::Write(trpgWriteBuffer &buf)
{
    buf.Begin(TRPG_RANGE);
    buf.Add(inLod);
    buf.Add(outLod);
    buf.Add(priority);
    buf.Add((category ? category : ""));
    buf.Add((subCategory ? subCategory : ""));
    buf.End();

    return true;
}

bool trpgRange::Read(trpgReadBuffer &buf)
{
    char catStr[1024],subStr[1024];

    Reset();
    valid = false;

    try {
        buf.Get(inLod);
        buf.Get(outLod);
        buf.Get(priority);
        buf.Get(catStr,1024);
        buf.Get(subStr,1024);
        SetCategory(catStr,subStr);
        valid = true;
    }

    catch (...) {
        return false;
    }

    return isValid();
}

/*  ***************
    Range Table methods
    ***************
 */

trpgRangeTable::trpgRangeTable(void)
{
    valid = true;
}

trpgRangeTable::~trpgRangeTable(void)
{
    // vector cleans up itself
}

void trpgRangeTable::Reset(void)
{
    rangeList.resize(0);
    valid = true;
}

bool trpgRangeTable::GetRange(int id,trpgRange &ret) const
{
    if (!isValid())
        return false;

    if (id < 0 || id >= static_cast<int>(rangeList.size()))
        return false;

    ret = rangeList[id];

    return true;
}

bool trpgRangeTable::SetRange(int id,trpgRange &inRange)
{
    if (!isValid())
        return false;

    if (id < 0 || id >= static_cast<int>(rangeList.size()))
        return false;

    rangeList[id] = inRange;

    return true;
}

int trpgRangeTable::AddRange(trpgRange &range)
{
    rangeList.push_back(range);

    return rangeList.size()-1;
}

int trpgRangeTable::FindAddRange(trpgRange &range)
{
    for (unsigned int i=0;i<rangeList.size();i++) {
        if (range == rangeList[i])
            return i;
    }

    return AddRange(range);
}

bool trpgRangeTable::Write(trpgWriteBuffer &buf)
{
    if (!isValid())
        return false;

    buf.Begin(TRPGRANGETABLE);
    buf.Add((int32)rangeList.size());

    for (unsigned int i=0;i<rangeList.size();i++) {
        trpgRange &range = rangeList[i];
        range.Write(buf);
    }

    buf.End();

    return true;
}

bool trpgRangeTable::Read(trpgReadBuffer &buf)
{
    int32 numRange;
    valid = false;

    try {
        buf.Get(numRange);
        if (numRange < 0) throw 1;
        for (int i=0;i<numRange;i++) {
            trpgRange range;
            if (!range.Read(buf)) throw 1;
            rangeList.push_back(range);
        }

        valid = true;
    }

    catch (...) {
        return false;
    }

    return isValid();
}

trpgRangeTable & trpgRangeTable::operator = (const trpgRangeTable &inTab)
{
    Reset();

    for (unsigned int i=0;i<inTab.rangeList.size();i++)
        rangeList.push_back(rangeList[i]);

    return *this;
}