Rendering Plugin API Documentation

Symbolization Structures

Stroke:

typedef struct {
    double width; /* line width in pixels */

    /* line pattern, e.g. dots, dashes, etc.. */
    int patternlength;
    double pattern[MS_MAXPATTERNLENGTH];

    /* must not be NULL, must be a valid color */
    /* color.alpha must be used if supported by the renderer */
    colorObj color;

    int linecap; /* MS_CJC_TRIANGLE, MS_CJC_SQUARE, MS_CJC_ROUND, MS_CJC_BUTT */
    int linejoin; /* MS_CJC_BEVEL MS_CJC_ROUND MS_CJC_MITER */
    double linejoinmaxsize;
} strokeStyleObj;

Fill:

typedef struct {
    /* must not be NULL, must be a valid color *
     * color.alpha must be used if supported by the renderer */
    colorObj color;


    /* if not null, use the passed tile (which is a pointer to a
     * renderer specific structure) for tiling the polygon */
    void *tile;

} fillStyleObj;

Booleans

• supports_imagecach
• supports_pixel_buffer
• supports_transparent_layers

Functions

• void startNewLayer(imageObj *img, double opacity)
• void closeNewLayer(imageObj *img, double opacity)

• imageObj *createImage(int width, int height, outputFormatObj *format, colorObj* bg)
• int saveImage(imageObj *img, FILE *fp, outputFormatObj *format)
• void freeImage(imageObj *img)

• int transformShape(shapeObj *shape, rectObj extent, double cellsize)

• void renderLine(imageObj *img, shapeObj *p, strokeStyleObj *stroke)
• void renderPolygon(imageObj *img, shapeObj *p, colorObj *c)
• void renderGlyphsLine(imageObj *img, labelPathObj *labelpath, labelStyleObj *style, char *text)
• void renderGlyphs(imageObj *img,double x, double y, labelStyleObj *style, char *text)
• void renderEllipseSymbol(imageObj *img, double x, double y, symbolObj *symbol, symbolStyleObj *style)
• void renderVectorSymbol(imageObj *img, double x, double y, symbolObj *symbol, symbolStyleObj *style)
• void renderTruetypeSymbol(imageObj *img, double x, double y, symbolObj *symbol, symbolStyleObj *s)
• void renderPixmapSymbol(imageObj *img, double x, double y, symbolObj *symbol, symbolStyleObj *style)
• void renderTile(imageObj *img, imageObj *tile, double x, double y)
• void renderPolygonTiled(imageObj *img, shapeObj *p, imageObj *tile)

• void getRasterBuffer(imageObj *img, rasterBufferObj *rb)
• void mergeRasterBuffer(imageObj *img, rasterBufferObj *rb, double opacity, int dstX, int dstY)

• int getTruetypeTextBBox(imageObj *img,char *font, double size, char *text, rectObj *rect, double advances)

• void freeTile(imageObj *tile)
• void freeSymbol(symbolObj *s)