static int
msProjectRectTraditionalEdge(projectionObj *in, projectionObj *out,
rectObj *rect)
{
#ifdef USE_PROJ
pointObj prj_point;
rectObj prj_rect;
int rect_initialized = MS_FALSE, failure=0;
int ix, iy;
double dx, dy;
double x, y;
dx = (rect->maxx - rect->minx)/NUMBER_OF_SAMPLE_POINTS;
dy = (rect->maxy - rect->miny)/NUMBER_OF_SAMPLE_POINTS;
/* first ensure the top left corner is processed, even if the rect
turns out to be degenerate. */
prj_point.x = rect->minx;
prj_point.y = rect->miny;
#ifdef USE_POINT_Z_M
prj_point.z = 0.0;
prj_point.m = 0.0;
#endif /* USE_POINT_Z_M */
msProjectGrowRect(in,out,&prj_rect,&rect_initialized,&prj_point,
&failure);
/* sample along top and bottom */
if(dx > 0) {
for(ix = 0; ix <= NUMBER_OF_SAMPLE_POINTS; ix++ )
{
x = rect->minx + ix * dx;
prj_point.x = x;
prj_point.y = rect->miny;
msProjectGrowRect(in,out,&prj_rect,&rect_initialized,&prj_point,
&failure);
prj_point.x = x;
prj_point.y = rect->maxy;
msProjectGrowRect(in,out,&prj_rect,&rect_initialized,&prj_point,
&failure);
}
}
/* sample along left and right */
if(dy > 0) {
for(iy = 0; iy <= NUMBER_OF_SAMPLE_POINTS; iy++ )
{
y = rect->miny + iy * dy;
prj_point.y = y;
prj_point.x = rect->minx;
msProjectGrowRect(in,out,&prj_rect,&rect_initialized,&prj_point,
&failure);
prj_point.x = rect->maxx;
prj_point.y = y;
msProjectGrowRect(in,out,&prj_rect,&rect_initialized,&prj_point,
&failure);
}
}
/*
** If there have been any failures around the edges, then we had better
** try and fill in the interior to get a close bounds.
*/
if( failure > 0 )
return msProjectRectGrid( in, out, rect );
rect->minx = prj_rect.minx;
rect->miny = prj_rect.miny;
rect->maxx = prj_rect.maxx;
rect->maxy = prj_rect.maxy;
if( !rect_initialized )
return MS_FAILURE;
else
return(MS_SUCCESS);
#else
msSetError(MS_PROJERR, "Projection support is not available.", "msProjectRect()");
return(MS_FAILURE);
#endif
}
static int
msProjectRectAsPolygon(projectionObj *in, projectionObj *out,
rectObj *rect)
{
#ifdef USE_PROJ
shapeObj polygonObj;
lineObj ring;
// pointObj ringPoints[NUMBER_OF_SAMPLE_POINTS*4+4];
pointObj *ringPoints;
int ix, iy;
double dx, dy;
ringPoints = (pointObj*) calloc(sizeof(pointObj),NUMBER_OF_SAMPLE_POINTS*4+4);
ring.point = ringPoints;
ring.numpoints = 0;
msInitShape( &polygonObj );
polygonObj.type = MS_SHAPE_POLYGON;
/* -------------------------------------------------------------------- */
/* Build polygon as steps around the source rectangle. */
/* -------------------------------------------------------------------- */
dx = (rect->maxx - rect->minx)/NUMBER_OF_SAMPLE_POINTS;
dy = (rect->maxy - rect->miny)/NUMBER_OF_SAMPLE_POINTS;
/* sample along top */
if(dx != 0) {
for(ix = 0; ix <= NUMBER_OF_SAMPLE_POINTS; ix++ )
{
ringPoints[ring.numpoints].x = rect->minx + ix * dx;
ringPoints[ring.numpoints++].y = rect->miny;
}
}
/* sample on along right side */
if(dy != 0) {
for(iy = 1; iy <= NUMBER_OF_SAMPLE_POINTS; iy++ )
{
ringPoints[ring.numpoints].x = rect->maxx;
ringPoints[ring.numpoints++].y = rect->miny + iy * dy;
}
}
/* sample along bottom */
if(dx != 0) {
for(ix = NUMBER_OF_SAMPLE_POINTS-1; ix >= 0; ix-- )
{
ringPoints[ring.numpoints].x = rect->minx + ix * dx;
ringPoints[ring.numpoints++].y = rect->maxy;
}
}
/* sample on along left side */
if(dy != 0) {
for(iy = NUMBER_OF_SAMPLE_POINTS-1; iy >= 0; iy-- )
{
ringPoints[ring.numpoints].x = rect->minx;
ringPoints[ring.numpoints++].y = rect->miny + iy * dy;
}
}
msAddLineDirectly( &polygonObj, &ring );
/* -------------------------------------------------------------------- */
/* Attempt to reproject. */
/* -------------------------------------------------------------------- */
msProjectShapeLine( in, out, &polygonObj, 0 );
/* If no points reprojected, try a grid sampling */
if( polygonObj.numlines == 0 || polygonObj.line[0].numpoints == 0 )
{
msFreeShape( &polygonObj );
return msProjectRectGrid( in, out, rect );
}
/* -------------------------------------------------------------------- */
/* Collect bounds. */
/* -------------------------------------------------------------------- */
rect->minx = rect->maxx = polygonObj.line[0].point[0].x;
rect->miny = rect->maxy = polygonObj.line[0].point[0].y;
for( ix = 1; ix < polygonObj.line[0].numpoints; ix++ )
{
pointObj *pnt = polygonObj.line[0].point + ix;
rect->minx = MS_MIN(rect->minx,pnt->x);
rect->maxx = MS_MAX(rect->maxx,pnt->x);
rect->miny = MS_MIN(rect->miny,pnt->y);
rect->maxy = MS_MAX(rect->maxy,pnt->y);
}
msFreeShape( &polygonObj );
/* -------------------------------------------------------------------- */
/* Special case to handle reprojection from "more than the */
/* whole world" projected coordinates that sometimes produce a */
/* region greater than 360 degrees wide due to various wrapping */
/* logic. */
/* -------------------------------------------------------------------- */
if( out && pj_is_latlong(out->proj) && in && !pj_is_latlong(in->proj)
&& rect->maxx - rect->minx > 360.0 )
{
rect->maxx = 180;
rect->minx = -180;
}
return MS_SUCCESS;
#else
msSetError(MS_PROJERR, "Projection support is not available.", "msProjectRect()");
return(MS_FAILURE);
#endif
}
static int
msProjectRectAsPolygon(projectionObj *in, projectionObj *out,
rectObj *rect)
{
#ifdef USE_PROJ
shapeObj polygonObj;
lineObj ring;
/* pointObj ringPoints[NUMBER_OF_SAMPLE_POINTS*4+4]; */
pointObj *ringPoints;
int ix, iy;
double dx, dy;
/* If projecting from longlat to projected */
if( out && !pj_is_latlong(out->proj) && in && pj_is_latlong(in->proj) &&
fabs(rect->minx - -180.0) < 1e-5 && fabs(rect->miny - -90.0) < 1e-5 &&
fabs(rect->maxx - 180.0) < 1e-5 && fabs(rect->maxy - 90.0) < 1e-5) {
rect->minx = -1e15;
rect->miny = -1e15;
rect->maxx = 1e15;
rect->maxy = 1e15;
return MS_SUCCESS;
}
/* -------------------------------------------------------------------- */
/* Build polygon as steps around the source rectangle. */
/* -------------------------------------------------------------------- */
dx = (rect->maxx - rect->minx)/NUMBER_OF_SAMPLE_POINTS;
dy = (rect->maxy - rect->miny)/NUMBER_OF_SAMPLE_POINTS;
if(dx==0 && dy==0) {
pointObj foo;
msDebug( "msProjectRect(): Warning: degenerate rect {%f,%f,%f,%f}\n",rect->minx,rect->miny,rect->minx,rect->miny );
foo.x = rect->minx;
foo.y = rect->miny;
msProjectPoint(in,out,&foo);
rect->minx=rect->maxx=foo.x;
rect->miny=rect->maxy=foo.y;
return MS_SUCCESS;
}
ringPoints = (pointObj*) calloc(sizeof(pointObj),NUMBER_OF_SAMPLE_POINTS*4+4);
ring.point = ringPoints;
ring.numpoints = 0;
msInitShape( &polygonObj );
polygonObj.type = MS_SHAPE_POLYGON;
/* sample along top */
if(dx != 0) {
for(ix = 0; ix <= NUMBER_OF_SAMPLE_POINTS; ix++ ) {
ringPoints[ring.numpoints].x = rect->minx + ix * dx;
ringPoints[ring.numpoints++].y = rect->miny;
}
}
/* sample on along right side */
if(dy != 0) {
for(iy = 1; iy <= NUMBER_OF_SAMPLE_POINTS; iy++ ) {
ringPoints[ring.numpoints].x = rect->maxx;
ringPoints[ring.numpoints++].y = rect->miny + iy * dy;
}
}
/* sample along bottom */
if(dx != 0) {
for(ix = NUMBER_OF_SAMPLE_POINTS-1; ix >= 0; ix-- ) {
ringPoints[ring.numpoints].x = rect->minx + ix * dx;
ringPoints[ring.numpoints++].y = rect->maxy;
}
}
/* sample on along left side */
if(dy != 0) {
for(iy = NUMBER_OF_SAMPLE_POINTS-1; iy >= 0; iy-- ) {
ringPoints[ring.numpoints].x = rect->minx;
ringPoints[ring.numpoints++].y = rect->miny + iy * dy;
}
}
msAddLineDirectly( &polygonObj, &ring );
#ifdef notdef
FILE *wkt = fopen("/tmp/www-before.wkt","w");
char *tmp = msShapeToWKT(&polygonObj);
fprintf(wkt,"%s\n", tmp);
free(tmp);
fclose(wkt);
#endif
/* -------------------------------------------------------------------- */
/* Attempt to reproject. */
/* -------------------------------------------------------------------- */
msProjectShapeLine( in, out, &polygonObj, 0 );
/* If no points reprojected, try a grid sampling */
if( polygonObj.numlines == 0 || polygonObj.line[0].numpoints == 0 ) {
msFreeShape( &polygonObj );
return msProjectRectGrid( in, out, rect );
}
#ifdef notdef
wkt = fopen("/tmp/www-after.wkt","w");
tmp = msShapeToWKT(&polygonObj);
fprintf(wkt,"%s\n", tmp);
free(tmp);
fclose(wkt);
#endif
/* -------------------------------------------------------------------- */
/* Collect bounds. */
/* -------------------------------------------------------------------- */
rect->minx = rect->maxx = polygonObj.line[0].point[0].x;
rect->miny = rect->maxy = polygonObj.line[0].point[0].y;
for( ix = 1; ix < polygonObj.line[0].numpoints; ix++ ) {
pointObj *pnt = polygonObj.line[0].point + ix;
rect->minx = MS_MIN(rect->minx,pnt->x);
rect->maxx = MS_MAX(rect->maxx,pnt->x);
rect->miny = MS_MIN(rect->miny,pnt->y);
rect->maxy = MS_MAX(rect->maxy,pnt->y);
}
msFreeShape( &polygonObj );
/* -------------------------------------------------------------------- */
/* Special case to handle reprojection from "more than the */
/* whole world" projected coordinates that sometimes produce a */
/* region greater than 360 degrees wide due to various wrapping */
/* logic. */
/* -------------------------------------------------------------------- */
if( out && pj_is_latlong(out->proj) && in && !pj_is_latlong(in->proj)
&& rect->maxx - rect->minx > 360.0 ) {
rect->maxx = 180;
rect->minx = -180;
}
return MS_SUCCESS;
#else
msSetError(MS_PROJERR, "Projection support is not available.", "msProjectRect()");
return(MS_FAILURE);
#endif
}
