MapServer/src/mapchart.c at main · MapServer/MapServer · GitHub

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

* $Id$

* Project: MapServer

* Purpose: Implementation of dynamic charting (MS-RFC-29)

* Author: Thomas Bonfort ( thomas.bonfort[at]gmail.com )

******************************************************************************

* Permission is hereby granted, free of charge, to any person obtaining a

* copy of this software and associated documentation files (the "Software"),

* to deal in the Software without restriction, including without limitation

* the rights to use, copy, modify, merge, publish, distribute, sublicense,

* and/or sell copies of the Software, and to permit persons to whom the

* Software is furnished to do so, subject to the following conditions:

* The above copyright notice and this permission notice shall be included in

* all copies of this Software or works derived from this Software.

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

* DEALINGS IN THE SOFTWARE.

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

#include "mapserver.h"

#define MS_CHART_TYPE_PIE 1

#define MS_CHART_TYPE_BAR 2

#define MS_CHART_TYPE_VBAR 3

** check if an object of width w and height h placed at point x,y can fit in an

*image of width mw and height mh

#define MS_CHART_FITS(x, y, w, h, mw, mh) \

(((x) - (w) / 2. > 0.) && ((x) + (w) / 2. < (mw)) && \

((y) - (h) / 2. > 0.) && ((y) + (h) / 2.) < (mh))

** find a point on a shape. check if it fits in image

** returns

** MS_SUCCESS and point coordinates in 'p' if chart fits in image

** MS_FAILURE if no point could be found

int findChartPoint(mapObj *map, shapeObj *shape, int width, int height,

pointObj *center) {

int middle, numpoints;

double invcellsize = 1.0 / map->cellsize; /*speed up MAP2IMAGE_X/Y_IC_DBL*/

switch (shape->type) {

case MS_SHAPE_POINT:

center->x = MS_MAP2IMAGE_X_IC_DBL(shape->line[0].point[0].x,

map->extent.minx, invcellsize);

center->y = MS_MAP2IMAGE_Y_IC_DBL(shape->line[0].point[0].y,

map->extent.maxy, invcellsize);

if (MS_CHART_FITS(center->x, center->y, width, height, map->width,

map->height))

return MS_SUCCESS;

else

return MS_FAILURE;

break;

case MS_SHAPE_LINE:

/*loop through line segments starting from middle (alternate between before

*and after middle point) *first segment that fits is chosen

middle = shape->line[0].numpoints / 2; /*start with middle segment of line*/

numpoints = shape->line[0].numpoints;

if (1 <= middle) {

int idx = middle + 1;

if (idx < numpoints) {

center->x =

(shape->line[0].point[idx - 1].x + shape->line[0].point[idx].x) /

2.;

center->y =

(shape->line[0].point[idx - 1].y + shape->line[0].point[idx].y) /

2.;

center->x =

MS_MAP2IMAGE_X_IC_DBL(center->x, map->extent.minx, invcellsize);

center->y =

MS_MAP2IMAGE_Y_IC_DBL(center->y, map->extent.maxy, invcellsize);

if (MS_CHART_FITS(center->x, center->y, width, height, map->width,

map->height))

return MS_SUCCESS;

return MS_FAILURE;

}

idx = middle - 1;

center->x =

(shape->line[0].point[idx].x + shape->line[0].point[idx + 1].x) / 2;

center->y =

(shape->line[0].point[idx].y + shape->line[0].point[idx + 1].y) / 2;

center->x =

MS_MAP2IMAGE_X_IC_DBL(center->x, map->extent.minx, invcellsize);

center->y =

MS_MAP2IMAGE_Y_IC_DBL(center->y, map->extent.maxy, invcellsize);

if (MS_CHART_FITS(center->x, center->y, width, height, map->width,

map->height))

return MS_SUCCESS;

return MS_FAILURE;

}

return MS_FAILURE;

break;

case MS_SHAPE_POLYGON:

msPolygonLabelPoint(shape, center, -1);

center->x = MS_MAP2IMAGE_X_IC_DBL(center->x, map->extent.minx, invcellsize);

center->y = MS_MAP2IMAGE_Y_IC_DBL(center->y, map->extent.maxy, invcellsize);

if (MS_CHART_FITS(center->x, center->y, width, height, map->width,

map->height))

return MS_SUCCESS;

else

return MS_FAILURE;

break;

default:

return MS_FAILURE;

}

int WARN_UNUSED drawRectangle(mapObj *map, imageObj *image, double mx,

double my, double Mx, double My,

styleObj *style) {

shapeObj shape;

lineObj line;

pointObj point[5];

line.point = point;

line.numpoints = 5;

shape.line = &line;

shape.numlines = 1;

point[0].x = point[4].x = point[3].x = mx;

point[0].y = point[4].y = point[1].y = my;

/* cppcheck-suppress unreadVariable */

point[1].x = point[2].x = Mx;

/* cppcheck-suppress unreadVariable */

point[2].y = point[3].y = My;

return msDrawShadeSymbol(map, image, &shape, style, 1.0);

}

int WARN_UNUSED msDrawVBarChart(mapObj *map, imageObj *image, pointObj *center,

double *values, styleObj **styles,

int numvalues, double barWidth) {

int c;

double left, cur; /*shortcut to pixel boundaries of the chart*/

double height = 0;

for (c = 0; c < numvalues; c++) {

height += values[c];

}

cur = center->y + height / 2.;

left = center->x - barWidth / 2.;

for (c = 0; c < numvalues; c++) {

if (MS_UNLIKELY(MS_FAILURE == drawRectangle(map, image, left, cur,

left + barWidth,

cur - values[c], styles[c])))

return MS_FAILURE;

cur -= values[c];

}

return MS_SUCCESS;

}

int msDrawBarChart(mapObj *map, imageObj *image, pointObj *center,

double *values, styleObj **styles, int numvalues,

double width, double height, double *maxVal, double *minVal,

double barWidth) {

double upperLimit, lowerLimit;

double shapeMaxVal, shapeMinVal, pixperval;

int c;

double vertOrigin, vertOriginClipped, horizStart, y;

double left, top, bottom; /*shortcut to pixel boundaries of the chart*/

top = center->y - height / 2.;

bottom = center->y + height / 2.;

left = center->x - width / 2.;

shapeMaxVal = shapeMinVal = values[0];

for (c = 1; c < numvalues; c++) {

if (maxVal == NULL || minVal == NULL) { /*compute bounds if not specified*/

if (values[c] > shapeMaxVal)

shapeMaxVal = values[c];

if (values[c] < shapeMinVal)

shapeMinVal = values[c];

}

* use specified bounds if wanted

* if not, always show the origin

upperLimit = (maxVal != NULL) ? *maxVal : MS_MAX(shapeMaxVal, 0);

lowerLimit = (minVal != NULL) ? *minVal : MS_MIN(shapeMinVal, 0);

if (upperLimit == lowerLimit) {

/* treat the case where we would have an unspecified behavior */

upperLimit += 0.5;

lowerLimit -= 0.5;

}

pixperval = height / (upperLimit - lowerLimit);

vertOrigin = bottom + lowerLimit * pixperval;

vertOriginClipped = (vertOrigin < top) ? top

: (vertOrigin > bottom) ? bottom

: vertOrigin;

horizStart = left;

for (c = 0; c < numvalues; c++) {

double barHeight = values[c] * pixperval;

/*clip bars*/

y = ((vertOrigin - barHeight) < top) ? top

: (vertOrigin - barHeight > bottom) ? bottom

: vertOrigin - barHeight;

if (y != vertOriginClipped) { /*don't draw bars of height == 0 (i.e. either

values==0, or clipped)*/

if (values[c] > 0) {

if (MS_UNLIKELY(MS_FAILURE == drawRectangle(map, image, horizStart, y,

horizStart + barWidth - 1,

vertOriginClipped,

styles[c])))

return MS_FAILURE;

} else {

if (MS_UNLIKELY(MS_FAILURE ==

drawRectangle(map, image, horizStart, vertOriginClipped,

horizStart + barWidth - 1, y, styles[c])))

return MS_FAILURE;

}

horizStart += barWidth;

}

return MS_SUCCESS;

}

int WARN_UNUSED msDrawPieChart(mapObj *map, imageObj *image, pointObj *center,

double diameter, double *values,

styleObj **styles, int numvalues) {

int i;

double dTotal = 0., start = 0;

for (i = 0; i < numvalues; i++) {

if (values[i] < 0.) {

msSetError(MS_MISCERR, "cannot draw pie charts for negative values",

"msDrawPieChart()");

return MS_FAILURE;

}

dTotal += values[i];

}

for (i = 0; i < numvalues; i++) {

double angle = values[i];

if (angle == 0)

continue; /*no need to draw. causes artifacts with outlines*/

angle *= 360.0 / dTotal;

if (MS_UNLIKELY(MS_FAILURE == msDrawPieSlice(map, image, center, styles[i],

diameter / 2., start,

start + angle)))

return MS_FAILURE;

start += angle;

}

return MS_SUCCESS;

}

int getNextShape(mapObj *map, layerObj *layer, double *values, int *nvalues,

styleObj **styles, shapeObj *shape) {

int status;

int c;

status = msLayerNextShape(layer, shape);

if (status == MS_SUCCESS) {

if (layer->project) {

if (layer->reprojectorLayerToMap == NULL) {

layer->reprojectorLayerToMap =

msProjectCreateReprojector(&layer->projection, &map->projection);

if (layer->reprojectorLayerToMap == NULL) {

return MS_FAILURE;

}

msProjectShapeEx(layer->reprojectorLayerToMap, shape);

}

if (msBindLayerToShape(layer, shape,

MS_DRAWMODE_FEATURES | MS_DRAWMODE_LABELS) !=

MS_SUCCESS)

return MS_FAILURE; /* error message is set in msBindLayerToShape() */

*nvalues = 0;

for (c = 0; c < layer->numclasses; c++) {

if (msEvalExpression(layer, shape, &(layer->class[c] -> expression),

layer->classitemindex) == MS_TRUE) {

values[*nvalues] = (layer->class[c] -> styles[0] -> size);

styles[*nvalues] = layer->class[c]->styles[0];

(*nvalues)++;

}

return status;

}

/* eventually add a class to the layer to get the diameter from an attribute */

int pieLayerProcessDynamicDiameter(layerObj *layer) {

const char *chartRangeProcessingKey = NULL;

char *attrib;

double mindiameter = -1, maxdiameter, minvalue, maxvalue;

classObj *newclass;

styleObj *newstyle;

const char *chartSizeProcessingKey =

msLayerGetProcessingKey(layer, "CHART_SIZE");

if (chartSizeProcessingKey != NULL)

return MS_FALSE;

chartRangeProcessingKey = msLayerGetProcessingKey(layer, "CHART_SIZE_RANGE");

if (chartRangeProcessingKey == NULL)

return MS_FALSE;

attrib = msStrdup(chartRangeProcessingKey);

char *space = strchr(attrib, ' ');

if (space) {

*space = '\0';

if (sscanf(space + 1, "%lf %lf %lf %lf", &mindiameter, &maxdiameter,

&minvalue, &maxvalue) != 4) {

/*we don't have the attribute and the four range values*/

free(attrib);

msSetError(MS_MISCERR,

"Chart Layer format error for processing key \"CHART_RANGE\"",

"msDrawChartLayer()");

return MS_FAILURE;

}

/*create a new class in the layer containing the wanted attribute

* as the SIZE of its first STYLE*/

newclass = msGrowLayerClasses(layer);

if (newclass == NULL) {

free(attrib);

return MS_FAILURE;

}

initClass(newclass);

layer->numclasses++;

/*create and attach a new styleObj to our temp class

* and bind the wanted attribute to its SIZE

newstyle = msGrowClassStyles(newclass);

if (newstyle == NULL) {

free(attrib);

return MS_FAILURE;

}

initStyle(newstyle);

newclass->numstyles++;

newclass->name = (char *)msStrdup("__MS_SIZE_ATTRIBUTE_");

newstyle->bindings[MS_STYLE_BINDING_SIZE].item = msStrdup(attrib);

newstyle->numbindings++;

free(attrib);

return MS_TRUE;

}

/* clean up the class added temporarily */

static void pieLayerCleanupDynamicDiameter(layerObj *layer) {

if (layer->numclasses > 0 &&

EQUALN(layer->class[layer->numclasses - 1] -> name,

"__MS_SIZE_ATTRIBUTE_", 20)) {

classObj *c = msRemoveClass(layer, layer->numclasses - 1);

freeClass(c);

msFree(c);

}

int msDrawPieChartLayer(mapObj *map, layerObj *layer, imageObj *image) {

shapeObj shape;

int status = MS_SUCCESS;

const char *chartRangeProcessingKey = NULL;

const char *chartSizeProcessingKey =

msLayerGetProcessingKey(layer, "CHART_SIZE");

double diameter = 0, mindiameter = -1, maxdiameter = 0, minvalue = 0,

maxvalue = 0, exponent = 0;

double *values;

styleObj **styles;

pointObj center;

int numvalues =

layer->numclasses; /* the number of classes to represent in the graph */

int numvalues_for_shape = 0;

if (chartSizeProcessingKey == NULL) {

chartRangeProcessingKey =

msLayerGetProcessingKey(layer, "CHART_SIZE_RANGE");

if (chartRangeProcessingKey == NULL)

diameter = 20;

else {

const int nvalues =

sscanf(chartRangeProcessingKey, "%*s %lf %lf %lf %lf %lf",

&mindiameter, &maxdiameter, &minvalue, &maxvalue, &exponent);

if (nvalues != 4 && nvalues != 5) {

msSetError(

MS_MISCERR,

"msDrawChart format error for processing key \"CHART_SIZE_RANGE\": "

"itemname minsize maxsize minval maxval [exponent] is expected",

"msDrawPieChartLayer()");

return MS_FAILURE;

}

} else {

if (sscanf(chartSizeProcessingKey, "%lf", &diameter) != 1) {

msSetError(MS_MISCERR,

"msDrawChart format error for processing key \"CHART_SIZE\"",

"msDrawPieChartLayer()");

return MS_FAILURE;

}

layer->project =

msProjectionsDiffer(&(layer->projection), &(map->projection));

/* step through the target shapes */

msInitShape(&shape);

values = (double *)calloc(numvalues, sizeof(double));

MS_CHECK_ALLOC(values, numvalues * sizeof(double), MS_FAILURE);

styles = (styleObj **)malloc((numvalues) * sizeof(styleObj *));

if (styles == NULL) {

msSetError(MS_MEMERR, "%s: %d: Out of memory allocating %u bytes.\n",

"msDrawPieChartLayer()", __FILE__, __LINE__,

(unsigned int)(numvalues * sizeof(styleObj *)));

free(values);

return MS_FAILURE;

}

while (MS_SUCCESS == getNextShape(map, layer, values, &numvalues_for_shape,

styles, &shape)) {

if (chartRangeProcessingKey != NULL)

numvalues_for_shape--;

if (numvalues_for_shape == 0) {

msFreeShape(&shape);

continue;

}

msDrawStartShape(map, layer, image, &shape);

if (chartRangeProcessingKey != NULL) {

diameter = values[numvalues_for_shape];

if (mindiameter >= 0) {

if (diameter <= minvalue)

diameter = mindiameter;

else if (diameter >= maxvalue)

diameter = maxdiameter;

else {

if (exponent <= 0)

diameter = MS_NINT(mindiameter +

((diameter - minvalue) / (maxvalue - minvalue)) *

(maxdiameter - mindiameter));

else

diameter = MS_NINT(

mindiameter + pow((diameter - minvalue) / (maxvalue - minvalue),

1.0 / exponent) *

(maxdiameter - mindiameter));

}

if (findChartPoint(map, &shape, diameter, diameter, &center) ==

MS_SUCCESS) {

status = msDrawPieChart(map, image, &center, diameter, values, styles,

numvalues_for_shape);

}

msDrawEndShape(map, layer, image, &shape);

msFreeShape(&shape);

}

free(values);

free(styles);

return status;

}

int msDrawVBarChartLayer(mapObj *map, layerObj *layer, imageObj *image) {

shapeObj shape;

int status = MS_SUCCESS;

const char *chartSizeProcessingKey =

msLayerGetProcessingKey(layer, "CHART_SIZE");

const char *chartScaleProcessingKey =

msLayerGetProcessingKey(layer, "CHART_SCALE");

double barWidth, scale = 1.0;

double *values;

styleObj **styles;

pointObj center;

int numvalues = layer->numclasses;

int numvalues_for_shape;

if (chartSizeProcessingKey == NULL) {

barWidth = 20;

} else {

if (sscanf(chartSizeProcessingKey, "%lf", &barWidth) != 1) {

msSetError(MS_MISCERR,

"msDrawChart format error for processing key \"CHART_SIZE\"",

"msDrawVBarChartLayer()");

return MS_FAILURE;

}

if (chartScaleProcessingKey) {

if (sscanf(chartScaleProcessingKey, "%lf", &scale) != 1) {

msSetError(MS_MISCERR,

"Error reading value for processing key \"CHART_SCALE\"",

"msDrawVBarChartLayer()");

return MS_FAILURE;

}

msInitShape(&shape);

values = (double *)calloc(numvalues, sizeof(double));

MS_CHECK_ALLOC(values, numvalues * sizeof(double), MS_FAILURE);

styles = (styleObj **)malloc(numvalues * sizeof(styleObj *));

if (styles == NULL) {

msSetError(MS_MEMERR, "%s: %d: Out of memory allocating %u bytes.\n",

"msDrawVBarChartLayer()", __FILE__, __LINE__,

(unsigned int)(numvalues * sizeof(styleObj *)));

free(values);

return MS_FAILURE;

}

while (MS_SUCCESS == getNextShape(map, layer, values, &numvalues_for_shape,

styles, &shape)) {

int i;

double h = 0;

if (numvalues_for_shape == 0) {

continue;

}

for (i = 0; i < numvalues_for_shape; i++) {

values[i] *= scale;

h += values[i];

}

msDrawStartShape(map, layer, image, &shape);

if (findChartPoint(map, &shape, barWidth, h, &center) == MS_SUCCESS) {

status = msDrawVBarChart(map, image, &center, values, styles,

numvalues_for_shape, barWidth);

}

msDrawEndShape(map, layer, image, &shape);

msFreeShape(&shape);

}

free(values);

free(styles);

return status;

}

int msDrawBarChartLayer(mapObj *map, layerObj *layer, imageObj *image) {

shapeObj shape;

int status = MS_SUCCESS;

const char *chartSizeProcessingKey =

msLayerGetProcessingKey(layer, "CHART_SIZE");

const char *barMax = msLayerGetProcessingKey(layer, "CHART_BAR_MAXVAL");

const char *barMin = msLayerGetProcessingKey(layer, "CHART_BAR_MINVAL");

double width, height;

double barWidth;

double *values;

styleObj **styles;

pointObj center;

double barMaxVal = 0.0, barMinVal = 0.0;

int numvalues = layer->numclasses;

int numvalues_for_shape;

if (chartSizeProcessingKey == NULL) {

width = height = 20;

} else {

const int ret = sscanf(chartSizeProcessingKey, "%lf %lf", &width, &height);

if (ret == 1) {

height = width;

} else if (ret != 2) {

msSetError(MS_MISCERR,

"msDrawChart format error for processing key \"CHART_SIZE\"",

"msDrawBarChartLayer()");

return MS_FAILURE;

}

if (barMax) {

if (sscanf(barMax, "%lf", &barMaxVal) != 1) {

msSetError(MS_MISCERR,

"Error reading value for processing key \"CHART_BAR_MAXVAL\"",

"msDrawBarChartLayer()");

return MS_FAILURE;

}

if (barMin) {

if (sscanf(barMin, "%lf", &barMinVal) != 1) {

msSetError(MS_MISCERR,

"Error reading value for processing key \"CHART_BAR_MINVAL\"",

"msDrawBarChartLayer()");

return MS_FAILURE;

}

if (barMin && barMax && barMinVal >= barMaxVal) {

msSetError(MS_MISCERR,

"\"CHART_BAR_MINVAL\" must be less than \"CHART_BAR_MAXVAL\"",

"msDrawBarChartLayer()");

return MS_FAILURE;

}

barWidth = (double)width / (double)layer->numclasses;

if (!barWidth) {

msSetError(

MS_MISCERR,

"Specified width of chart too small to fit given number of classes",

"msDrawBarChartLayer()");

return MS_FAILURE;

}

msInitShape(&shape);

values = (double *)calloc(numvalues, sizeof(double));

MS_CHECK_ALLOC(values, numvalues * sizeof(double), MS_FAILURE);

styles = (styleObj **)malloc(numvalues * sizeof(styleObj *));

if (styles == NULL) {

msSetError(MS_MEMERR, "%s: %d: Out of memory allocating %u bytes.\n",

"msDrawBarChartLayer()", __FILE__, __LINE__,

(unsigned int)(numvalues * sizeof(styleObj *)));

free(values);

return MS_FAILURE;

}

while (MS_SUCCESS == getNextShape(map, layer, values, &numvalues_for_shape,

styles, &shape)) {

if (numvalues_for_shape == 0)

continue;

msDrawStartShape(map, layer, image, &shape);

if (findChartPoint(map, &shape, width, height, &center) == MS_SUCCESS) {

status = msDrawBarChart(map, image, &center, values, styles,

numvalues_for_shape, width, height,

(barMax != NULL) ? &barMaxVal : NULL,

(barMin != NULL) ? &barMinVal : NULL, barWidth);

}

msDrawEndShape(map, layer, image, &shape);

msFreeShape(&shape);

}

free(values);

free(styles);

return status;

}

/**

* Generic function to render chart layers.

int msDrawChartLayer(mapObj *map, layerObj *layer, imageObj *image) {

rectObj searchrect;

const char *chartTypeProcessingKey =

msLayerGetProcessingKey(layer, "CHART_TYPE");

int chartType = MS_CHART_TYPE_PIE;

int status = MS_FAILURE;

if (image && map) {

if (!(MS_RENDERER_PLUGIN(image->format))) {

msSetError(MS_MISCERR,

"chart drawing currently only supports GD and AGG renderers",

"msDrawChartLayer()");

return MS_FAILURE;

}

if (chartTypeProcessingKey != NULL) {

if (strcasecmp(chartTypeProcessingKey, "PIE") == 0) {

chartType = MS_CHART_TYPE_PIE;

} else if (strcasecmp(chartTypeProcessingKey, "BAR") == 0) {

chartType = MS_CHART_TYPE_BAR;

} else if (strcasecmp(chartTypeProcessingKey, "VBAR") == 0) {

chartType = MS_CHART_TYPE_VBAR;

} else {

msSetError(MS_MISCERR,

"unknown chart type for processing key \"CHART_TYPE\", must "

"be one of \"PIE\" or \"BAR\"",

"msDrawChartLayer()");

return MS_FAILURE;

}

if (chartType == MS_CHART_TYPE_PIE) {

pieLayerProcessDynamicDiameter(layer);

}

/* open this layer */

status = msLayerOpen(layer);

if (status != MS_SUCCESS)

return MS_FAILURE;

status = msLayerWhichItems(layer, MS_FALSE, NULL);

if (status != MS_SUCCESS) {

msLayerClose(layer);

return MS_FAILURE;

}

/* identify target shapes */

if (layer->transform == MS_TRUE)

searchrect = map->extent;

else {

searchrect.minx = searchrect.miny = 0;

searchrect.maxx = map->width - 1;

searchrect.maxy = map->height - 1;

}

if ((map->projection.numargs > 0) && (layer->projection.numargs > 0))

msProjectRect(&map->projection, &layer->projection,

&searchrect); /* project the searchrect to source coords */

status = msLayerWhichShapes(layer, searchrect, MS_FALSE);

if (status == MS_DONE) { /* no overlap */

msLayerClose(layer);

if (chartType == MS_CHART_TYPE_PIE)

pieLayerCleanupDynamicDiameter(layer);

return MS_SUCCESS;

} else if (status != MS_SUCCESS) {

msLayerClose(layer);

if (chartType == MS_CHART_TYPE_PIE)

pieLayerCleanupDynamicDiameter(layer);

return MS_FAILURE;

}

switch (chartType) {

case MS_CHART_TYPE_PIE:

status = msDrawPieChartLayer(map, layer, image);

break;

case MS_CHART_TYPE_BAR:

status = msDrawBarChartLayer(map, layer, image);

break;

case MS_CHART_TYPE_VBAR:

status = msDrawVBarChartLayer(map, layer, image);

break;

default:

return MS_FAILURE; /*shouldn't be here anyways*/

}

msLayerClose(layer);

if (chartType == MS_CHART_TYPE_PIE)

pieLayerCleanupDynamicDiameter(layer);

}

return status;

}

MapServer/src/mapchart.c at main · MapServer/MapServer · GitHub

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MapServer/src/mapchart.c at main · MapServer/MapServer · GitHub

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