mapserver/mapagg.cpp at master · bradh/mapserver · GitHub

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

* $Id$

* Project: MapServer

* Purpose: AGG rendering and other AGG related functions.

* Author: Thomas Bonfort and the MapServer team.

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

* 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"

#include "mapagg.h"

#include <assert.h>

#include "renderers/agg/include/agg_color_rgba.h"

#include "renderers/agg/include/agg_pixfmt_rgba.h"

#include "renderers/agg/include/agg_renderer_base.h"

#include "renderers/agg/include/agg_renderer_scanline.h"

#include "renderers/agg/include/agg_math_stroke.h"

#include "renderers/agg/include/agg_scanline_p.h"

#include "renderers/agg/include/agg_scanline_u.h"

#include "renderers/agg/include/agg_rasterizer_scanline_aa.h"

#include "renderers/agg/include/agg_span_pattern_rgba.h"

#include "renderers/agg/include/agg_span_allocator.h"

#include "renderers/agg/include/agg_span_interpolator_linear.h"

#include "renderers/agg/include/agg_span_image_filter_rgba.h"

#include "renderers/agg/include/agg_pattern_filters_rgba.h"

#include "renderers/agg/include/agg_span_image_filter_rgb.h"

#include "renderers/agg/include/agg_image_accessors.h"

#include "renderers/agg/include/agg_conv_stroke.h"

#include "renderers/agg/include/agg_conv_dash.h"

#include "renderers/agg/include/agg_path_storage.h"

#include "renderers/agg/include/agg_font_freetype.h"

#include "renderers/agg/include/agg_conv_contour.h"

#include "renderers/agg/include/agg_ellipse.h"

#include "renderers/agg/include/agg_gamma_functions.h"

#include "renderers/agg/include/agg_rasterizer_outline_aa.h"

#include "renderers/agg/include/agg_renderer_outline_aa.h"

#include "renderers/agg/include/agg_renderer_outline_image.h"

#include "renderers/agg/include/agg_span_pattern_rgba.h"

#include "renderers/agg/include/agg_span_image_filter_rgba.h"

#include "renderers/agg/include/agg_glyph_raster_bin.h"

#include "renderers/agg/include/agg_renderer_raster_text.h"

#include "renderers/agg/include/agg_embedded_raster_fonts.h"

#include "renderers/agg/include/agg_conv_clipper.h"

#ifdef AGG_ALIASED_ENABLED

#include "renderers/agg/include/agg_renderer_primitives.h"

#include "renderers/agg/include/agg_rasterizer_outline.h"

#endif

typedef mapserver::order_bgra band_order;

#define AGG_LINESPACE 1.33

typedef mapserver::int8u band_type;

typedef mapserver::rgba8 color_type;

typedef mapserver::pixel32_type pixel_type;

typedef mapserver::blender_rgba_pre<color_type, band_order> blender_pre;

typedef mapserver::pixfmt_alpha_blend_rgba<blender_pre, mapserver::rendering_buffer, pixel_type> pixel_format;

typedef mapserver::rendering_buffer rendering_buffer;

typedef mapserver::renderer_base<pixel_format> renderer_base;

typedef mapserver::renderer_scanline_aa_solid<renderer_base> renderer_scanline;

typedef mapserver::rasterizer_scanline_aa<> rasterizer_scanline;

typedef mapserver::font_engine_freetype_int16 font_engine_type;

typedef mapserver::font_cache_manager<font_engine_type> font_manager_type;

typedef mapserver::conv_curve<font_manager_type::path_adaptor_type> font_curve_type;

#ifdef AGG_ALIASED_ENABLED

typedef mapserver::renderer_primitives<renderer_base> renderer_primitives;

typedef mapserver::rasterizer_outline<renderer_primitives> rasterizer_outline;

#endif

static color_type AGG_NO_COLOR = color_type(0, 0, 0, 0);

const mapserver::int8u* rasterfonts[]= {

mapserver::mcs5x10_mono, /*gd tiny. gse5x7 is a bit less high than gd tiny*/

mapserver::mcs5x11_mono, /*gd small*/

mapserver::mcs6x11_mono, /*gd medium*/

mapserver::mcs7x12_mono_low, /*gd large*/

mapserver::mcs7x12_mono_high /*gd huge*/

};

fontMetrics rasterfont_sizes[] = {

{5,mapserver::mcs5x10_mono[0]},

{5,mapserver::mcs5x11_mono[0]},

{6,mapserver::mcs6x11_mono[0]},

{7,mapserver::mcs7x12_mono_low[0]},

{7,mapserver::mcs7x12_mono_high[0]}

};

#define aggColor(c) mapserver::rgba8_pre(c->red, c->green, c->blue, c->alpha)

class aggRendererCache {

public:

font_engine_type m_feng;

font_manager_type m_fman;

aggRendererCache(): m_fman(m_feng){}

};

class AGG2Renderer {

public:

AGG2Renderer()

#ifdef AGG_ALIASED_ENABLED

m_renderer_primitives(m_renderer_base),

m_rasterizer_primitives(m_renderer_primitives)

#endif

{}

band_type* buffer;

rendering_buffer m_rendering_buffer;

pixel_format m_pixel_format;

renderer_base m_renderer_base;

renderer_scanline m_renderer_scanline;

#ifdef AGG_ALIASED_ENABLED

renderer_primitives m_renderer_primitives;

rasterizer_outline m_rasterizer_primitives;

#endif

rasterizer_scanline m_rasterizer_aa;

rasterizer_scanline m_rasterizer_aa_gamma;

mapserver::scanline_p8 sl_poly; /*packed scanlines, works faster when the area is larger

than the perimeter, in number of pixels*/

mapserver::scanline_u8 sl_line; /*unpacked scanlines, works faster if the area is roughly

equal to the perimeter, in number of pixels*/

bool use_alpha;

};

#define AGG_RENDERER(image) ((AGG2Renderer*) (image)->img.plugin)

template<class VertexSource>

static void applyCJC(VertexSource &stroke, int caps, int joins) {

switch (joins) {

case MS_CJC_ROUND:

stroke.line_join(mapserver::round_join);

break;

case MS_CJC_MITER:

stroke.line_join(mapserver::miter_join);

break;

case MS_CJC_BEVEL:

case MS_CJC_NONE:

stroke.line_join(mapserver::bevel_join);

break;

}

switch (caps) {

case MS_CJC_BUTT:

case MS_CJC_NONE:

stroke.line_cap(mapserver::butt_cap);

break;

case MS_CJC_ROUND:

stroke.line_cap(mapserver::round_cap);

break;

case MS_CJC_SQUARE:

stroke.line_cap(mapserver::square_cap);

break;

}

inline int aggLoadFont(aggRendererCache *cache, char *font, double size) {

if(!cache->m_feng.name() || strcmp(cache->m_feng.name(),font)) {

if (!cache->m_feng.load_font(font, 0, mapserver::glyph_ren_outline)) {

msSetError(MS_TTFERR, "AGG error loading font (%s)", "aggLoadFont()", font);

return MS_FAILURE;

}

if(!cache->m_feng.hinting())

cache->m_feng.hinting(true);

if(cache->m_feng.resolution() != 96)

cache->m_feng.resolution(96);

if(!cache->m_feng.flip_y())

cache->m_feng.flip_y(true);

cache->m_feng.height(size);

} else {

if(cache->m_feng.height()!=size)

cache->m_feng.height(size);

}

return MS_SUCCESS;

}

int agg2RenderLine(imageObj *img, shapeObj *p, strokeStyleObj *style) {

AGG2Renderer *r = AGG_RENDERER(img);

line_adaptor lines = line_adaptor(p);

#ifdef AGG_ALIASED_ENABLED

r->m_rasterizer_primitives.reset();

r->m_renderer_primitives.line_color(aggColor(style->color));

r->m_rasterizer_primitives.add_path(lines);

return MS_SUCCESS;

#endif

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

r->m_renderer_scanline.color(aggColor(style->color));

if (style->patternlength <= 0) {

mapserver::conv_stroke<line_adaptor> stroke(lines);

stroke.width(style->width);

if(style->width>1) {

applyCJC(stroke, style->linecap, style->linejoin);

} else {

stroke.inner_join(mapserver::inner_bevel);

stroke.line_join(mapserver::bevel_join);

}

r->m_rasterizer_aa.add_path(stroke);

} else {

mapserver::conv_dash<line_adaptor> dash(lines);

mapserver::conv_stroke<mapserver::conv_dash<line_adaptor> > stroke_dash(dash);

int patt_length = 0;

for (int i = 0; i < style->patternlength; i += 2) {

if (i < style->patternlength - 1) {

dash.add_dash(MS_MAX(1,MS_NINT(style->pattern[i])),

MS_MAX(1,MS_NINT(style->pattern[i + 1])));

if(style->patternoffset) {

patt_length += MS_MAX(1,MS_NINT(style->pattern[i])) +

MS_MAX(1,MS_NINT(style->pattern[i + 1]));

}

if(style->patternoffset > 0) {

dash.dash_start(patt_length - style->patternoffset);

}

stroke_dash.width(style->width);

if(style->width>1) {

applyCJC(stroke_dash, style->linecap, style->linejoin);

} else {

stroke_dash.inner_join(mapserver::inner_bevel);

stroke_dash.line_join(mapserver::bevel_join);

}

r->m_rasterizer_aa.add_path(stroke_dash);

}

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

return MS_SUCCESS;

}

int agg2RenderLineTiled(imageObj *img, shapeObj *p, imageObj * tile) {

mapserver::pattern_filter_bilinear_rgba8 fltr;

typedef mapserver::line_image_pattern<mapserver::pattern_filter_bilinear_rgba8> pattern_type;

typedef mapserver::renderer_outline_image<renderer_base, pattern_type> renderer_img_type;

typedef mapserver::rasterizer_outline_aa<renderer_img_type, mapserver::line_coord_sat> rasterizer_img_type;

pattern_type patt(fltr);

AGG2Renderer *r = AGG_RENDERER(img);

AGG2Renderer *tileRenderer = AGG_RENDERER(tile);

line_adaptor lines(p);

patt.create(tileRenderer->m_pixel_format);

renderer_img_type ren_img(r->m_renderer_base, patt);

rasterizer_img_type ras_img(ren_img);

ras_img.add_path(lines);

return MS_SUCCESS;

}

int agg2RenderPolygon(imageObj *img, shapeObj *p, colorObj * color) {

AGG2Renderer *r = AGG_RENDERER(img);

polygon_adaptor polygons(p);

r->m_rasterizer_aa_gamma.reset();

r->m_rasterizer_aa_gamma.filling_rule(mapserver::fill_even_odd);

r->m_rasterizer_aa_gamma.add_path(polygons);

r->m_renderer_scanline.color(aggColor(color));

mapserver::render_scanlines(r->m_rasterizer_aa_gamma, r->sl_poly, r->m_renderer_scanline);

return MS_SUCCESS;

}

int agg2RenderPolygonTiled(imageObj *img, shapeObj *p, imageObj * tile) {

assert(img->format->renderer == tile->format->renderer);

AGG2Renderer *r = AGG_RENDERER(img);

AGG2Renderer *tileRenderer = AGG_RENDERER(tile);

polygon_adaptor polygons(p);

typedef mapserver::wrap_mode_repeat wrap_type;

typedef mapserver::image_accessor_wrap<pixel_format,wrap_type,wrap_type> img_source_type;

typedef mapserver::span_pattern_rgba<img_source_type> span_gen_type;

mapserver::span_allocator<mapserver::rgba8> sa;

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_even_odd);

img_source_type img_src(tileRenderer->m_pixel_format);

span_gen_type sg(img_src, 0, 0);

r->m_rasterizer_aa.add_path(polygons);

mapserver::render_scanlines_aa(r->m_rasterizer_aa, r->sl_poly, r->m_renderer_base, sa , sg);

return MS_SUCCESS;

}

int agg2RenderGlyphs(imageObj *img, double x, double y, labelStyleObj *style, char *text) {

AGG2Renderer *r = AGG_RENDERER(img);

aggRendererCache *cache = (aggRendererCache*)MS_RENDERER_CACHE(MS_IMAGE_RENDERER(img));

if(aggLoadFont(cache,style->fonts[0],style->size) == MS_FAILURE)

return MS_FAILURE;

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

int curfontidx = 0;

const mapserver::glyph_cache* glyph;

int unicode;

font_curve_type m_curves(cache->m_fman.path_adaptor());

mapserver::trans_affine mtx;

mtx *= mapserver::trans_affine_translation(-x, -y);

/*agg angles are antitrigonometric*/

mtx *= mapserver::trans_affine_rotation(-style->rotation);

mtx *= mapserver::trans_affine_translation(x, y);

double fx = x, fy = y;

const char *utfptr = text;

mapserver::path_storage glyphs;

//first render all the glyphs to a path

while (*utfptr) {

if (*utfptr == '\r') {

fx = x;

utfptr++;

continue;

}

if (*utfptr == '\n') {

fx = x;

fy += ceil(style->size * AGG_LINESPACE);

utfptr++;

continue;

}

utfptr += msUTF8ToUniChar(utfptr, &unicode);

if(curfontidx != 0) {

if(aggLoadFont(cache,style->fonts[0],style->size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = 0;

}

glyph = cache->m_fman.glyph(unicode);

if(!glyph || glyph->glyph_index == 0) {

int i;

for(i=1;i<style->numfonts;i++) {

if(aggLoadFont(cache,style->fonts[i],style->size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = i;

glyph = cache->m_fman.glyph(unicode);

if(glyph && glyph->glyph_index != 0) {

break;

}

if (glyph) {

//cache->m_fman.add_kerning(&fx, &fy);

cache->m_fman.init_embedded_adaptors(glyph, fx, fy);

mapserver::conv_transform<font_curve_type, mapserver::trans_affine> trans_c(m_curves, mtx);

glyphs.concat_path(trans_c);

fx += glyph->advance_x;

fy += glyph->advance_y;

}

if (style->outlinewidth) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

mapserver::conv_contour<mapserver::path_storage> cc(glyphs);

cc.width(style->outlinewidth + 1);

r->m_rasterizer_aa.add_path(cc);

r->m_renderer_scanline.color(aggColor(style->outlinecolor));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

}

if (style->color) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

r->m_rasterizer_aa.add_path(glyphs);

r->m_renderer_scanline.color(aggColor(style->color));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

}

return MS_SUCCESS;

}

int agg2RenderBitmapGlyphs(imageObj *img, double x, double y, labelStyleObj *style, char *text) {

typedef mapserver::glyph_raster_bin<color_type> glyph_gen;

int size = MS_NINT(style->size);

if(size<0 || size>4) {

msSetError(MS_RENDERERERR,"invalid bitmap font size", "agg2RenderBitmapGlyphs()");

return MS_FAILURE;

}

AGG2Renderer *r = AGG_RENDERER(img);

glyph_gen glyph(0);

mapserver::renderer_raster_htext_solid<renderer_base, glyph_gen> rt(r->m_renderer_base, glyph);

glyph.font(rasterfonts[size]);

int numlines=0;

char **lines;

/*masking out the out-of-range character codes*/

int len;

int cc_start = rasterfonts[size][2];

int cc_end = cc_start + rasterfonts[size][3];

if(msCountChars(text,'\n')) {

if((lines = msStringSplit((const char*)text, '\n', &(numlines))) == NULL)

return(-1);

} else {

lines = &text;

numlines = 1;

}

y -= glyph.base_line();

for(int n=0;n<numlines;n++) {

len = strlen(lines[n]);

for (int i = 0; i < len; i++)

if (lines[n][i] < cc_start || lines[n][i] > cc_end)

lines[n][i] = '.';

if(style->outlinewidth > 0) {

rt.color(aggColor(style->outlinecolor));

for(int i=-1;i<=1;i++) {

for(int j=-1;j<=1;j++) {

if(i||j) {

rt.render_text(x+i, y+j, lines[n], true);

}

assert(style->color);

rt.color(aggColor(style->color));

rt.render_text(x, y, lines[n], true);

y += glyph.height();

}

if(*lines != text)

msFreeCharArray(lines, numlines);

return MS_SUCCESS;

}

int agg2RenderGlyphsLine(imageObj *img, labelPathObj *labelpath, labelStyleObj *style, char *text) {

AGG2Renderer *r = AGG_RENDERER(img);

aggRendererCache *cache = (aggRendererCache*)MS_RENDERER_CACHE(MS_IMAGE_RENDERER(img));

if(aggLoadFont(cache,style->fonts[0],style->size) == MS_FAILURE)

return MS_FAILURE;

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

const mapserver::glyph_cache* glyph;

int unicode;

int curfontidx = 0;

font_curve_type m_curves(cache->m_fman.path_adaptor());

mapserver::path_storage glyphs;

for (int i = 0; i < labelpath->path.numpoints; i++) {

assert(text);

mapserver::trans_affine mtx;

mtx *= mapserver::trans_affine_translation(-labelpath->path.point[i].x,-labelpath->path.point[i].y);

mtx *= mapserver::trans_affine_rotation(-labelpath->angles[i]);

mtx *= mapserver::trans_affine_translation(labelpath->path.point[i].x,labelpath->path.point[i].y);

text += msUTF8ToUniChar(text, &unicode);

if(curfontidx != 0) {

if(aggLoadFont(cache,style->fonts[0],style->size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = 0;

}

glyph = cache->m_fman.glyph(unicode);

if(!glyph || glyph->glyph_index == 0) {

int i;

for(i=1;i<style->numfonts;i++) {

if(aggLoadFont(cache,style->fonts[i],style->size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = i;

glyph = cache->m_fman.glyph(unicode);

if(glyph && glyph->glyph_index != 0) {

break;

}

if (glyph) {

cache->m_fman.init_embedded_adaptors(glyph, labelpath->path.point[i].x,labelpath->path.point[i].y);

mapserver::conv_transform<font_curve_type, mapserver::trans_affine> trans_c(m_curves, mtx);

glyphs.concat_path(trans_c);

}

if (style->outlinewidth) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

mapserver::conv_contour<mapserver::path_storage> cc(glyphs);

cc.width(style->outlinewidth + 1);

r->m_rasterizer_aa.add_path(cc);

r->m_renderer_scanline.color(aggColor(style->outlinecolor));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

}

if (style->color) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

r->m_rasterizer_aa.add_path(glyphs);

r->m_renderer_scanline.color(aggColor(style->color));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

}

return MS_SUCCESS;

}

static mapserver::path_storage imageVectorSymbolAGG(symbolObj *symbol) {

mapserver::path_storage path;

bool is_new=true;

for(int i=0;i < symbol->numpoints;i++) {

if((symbol->points[i].x == -99) && (symbol->points[i].y == -99)) { // (PENUP)

is_new=true;

} else {

if(is_new) {

path.move_to(symbol->points[i].x,symbol->points[i].y);

is_new=false;

}

else {

path.line_to(symbol->points[i].x,symbol->points[i].y);

}

return path;

}

int agg2RenderVectorSymbol(imageObj *img, double x, double y,

symbolObj *symbol, symbolStyleObj * style) {

AGG2Renderer *r = AGG_RENDERER(img);

double ox = symbol->sizex * 0.5;

double oy = symbol->sizey * 0.5;

mapserver::path_storage path = imageVectorSymbolAGG(symbol);

mapserver::trans_affine mtx;

mtx *= mapserver::trans_affine_translation(-ox,-oy);

mtx *= mapserver::trans_affine_scaling(style->scale);

mtx *= mapserver::trans_affine_rotation(-style->rotation);

mtx *= mapserver::trans_affine_translation(x, y);

path.transform(mtx);

if (style->color) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_even_odd);

r->m_rasterizer_aa.add_path(path);

r->m_renderer_scanline.color(aggColor(style->color));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_poly, r->m_renderer_scanline);

}

if(style->outlinecolor) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

r->m_renderer_scanline.color(aggColor(style->outlinecolor));

mapserver::conv_stroke<mapserver::path_storage> stroke(path);

stroke.width(style->outlinewidth);

r->m_rasterizer_aa.add_path(stroke);

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_poly, r->m_renderer_scanline);

}

return MS_SUCCESS;

}

int agg2RenderPixmapSymbol(imageObj *img, double x, double y, symbolObj *symbol, symbolStyleObj * style) {

AGG2Renderer *r = AGG_RENDERER(img);

rasterBufferObj *pixmap = symbol->pixmap_buffer;

assert(pixmap->type == MS_BUFFER_BYTE_RGBA);

rendering_buffer b(pixmap->data.rgba.pixels,pixmap->width,pixmap->height,pixmap->data.rgba.row_step);

pixel_format pf(b);

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

if ( (style->rotation != 0 && style->rotation != MS_PI*2.)|| style->scale != 1) {

mapserver::trans_affine image_mtx;

image_mtx *= mapserver::trans_affine_translation(-(pf.width()/2.),-(pf.height()/2.));

/*agg angles are antitrigonometric*/

image_mtx *= mapserver::trans_affine_rotation(-style->rotation);

image_mtx *= mapserver::trans_affine_scaling(style->scale);

image_mtx *= mapserver::trans_affine_translation(x,y);

image_mtx.invert();

typedef mapserver::span_interpolator_linear<> interpolator_type;

interpolator_type interpolator(image_mtx);

mapserver::span_allocator<color_type> sa;

// "hardcoded" bilinear filter

//------------------------------------------

typedef mapserver::span_image_filter_rgba_bilinear_clip<pixel_format, interpolator_type> span_gen_type;

span_gen_type sg(pf, mapserver::rgba(0,0,0,0), interpolator);

mapserver::path_storage pixmap_bbox;

int ims_2 = MS_NINT(MS_MAX(pixmap->width,pixmap->height)*style->scale*1.415)/2+1;

pixmap_bbox.move_to(x-ims_2,y-ims_2);

pixmap_bbox.line_to(x+ims_2,y-ims_2);

pixmap_bbox.line_to(x+ims_2,y+ims_2);

pixmap_bbox.line_to(x-ims_2,y+ims_2);

r->m_rasterizer_aa.add_path(pixmap_bbox);

mapserver::render_scanlines_aa(r->m_rasterizer_aa, r->sl_poly, r->m_renderer_base, sa, sg);

}

else {

//just copy the image at the correct location (we place the pixmap on

//the nearest integer pixel to avoid blurring)

r->m_renderer_base.blend_from(pf,0,MS_NINT(x-pixmap->width/2.),MS_NINT(y-pixmap->height/2.));

}

return MS_SUCCESS;

}

int agg2RenderEllipseSymbol(imageObj *image, double x, double y,

symbolObj *symbol, symbolStyleObj * style) {

AGG2Renderer *r = AGG_RENDERER(image);

mapserver::path_storage path;

mapserver::ellipse ellipse(x,y,symbol->sizex*style->scale/2,symbol->sizey*style->scale/2);

path.concat_path(ellipse);

if( style->rotation != 0) {

mapserver::trans_affine mtx;

mtx *= mapserver::trans_affine_translation(-x,-y);

/*agg angles are antitrigonometric*/

mtx *= mapserver::trans_affine_rotation(-style->rotation);

mtx *= mapserver::trans_affine_translation(x,y);

path.transform(mtx);

}

if(style->color) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_even_odd);

r->m_rasterizer_aa.add_path(path);

r->m_renderer_scanline.color(aggColor(style->color));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

}

if(style->outlinewidth) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

mapserver::conv_stroke<mapserver::path_storage> stroke(path);

stroke.width(style->outlinewidth);

r->m_rasterizer_aa.add_path(stroke);

r->m_renderer_scanline.color(aggColor(style->outlinecolor));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_poly, r->m_renderer_scanline);

}

return MS_SUCCESS;

}

int agg2RenderTruetypeSymbol(imageObj *img, double x, double y,

symbolObj *symbol, symbolStyleObj * style) {

AGG2Renderer *r = AGG_RENDERER(img);

aggRendererCache *cache = (aggRendererCache*)MS_RENDERER_CACHE(MS_IMAGE_RENDERER(img));

if(aggLoadFont(cache,symbol->full_font_path,style->scale) == MS_FAILURE)

return MS_FAILURE;

int unicode;

font_curve_type m_curves(cache->m_fman.path_adaptor());

msUTF8ToUniChar(symbol->character, &unicode);

const mapserver::glyph_cache* glyph = cache->m_fman.glyph(unicode);

double ox = (glyph->bounds.x1 + glyph->bounds.x2) / 2.;

double oy = (glyph->bounds.y1 + glyph->bounds.y2) / 2.;

mapserver::trans_affine mtx = mapserver::trans_affine_translation(-ox, -oy);

if(style->rotation)

mtx *= mapserver::trans_affine_rotation(-style->rotation);

mtx *= mapserver::trans_affine_translation(x, y);

mapserver::path_storage glyphs;

cache->m_fman.init_embedded_adaptors(glyph, 0,0);

mapserver::conv_transform<font_curve_type, mapserver::trans_affine> trans_c(m_curves, mtx);

glyphs.concat_path(trans_c);

if (style->outlinecolor) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

mapserver::conv_contour<mapserver::path_storage> cc(glyphs);

cc.auto_detect_orientation(true);

cc.width(style->outlinewidth + 1);

r->m_rasterizer_aa.add_path(cc);

r->m_renderer_scanline.color(aggColor(style->outlinecolor));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

}

if (style->color) {

r->m_rasterizer_aa.reset();

r->m_rasterizer_aa.filling_rule(mapserver::fill_non_zero);

r->m_rasterizer_aa.add_path(glyphs);

r->m_renderer_scanline.color(aggColor(style->color));

mapserver::render_scanlines(r->m_rasterizer_aa, r->sl_line, r->m_renderer_scanline);

}

return MS_SUCCESS;

}

int agg2RenderTile(imageObj *img, imageObj *tile, double x, double y) {

AGG2Renderer *imgRenderer = agg2GetRenderer(img);

AGG2Renderer *tileRenderer = agg2GetRenderer(tile);

return MS_FAILURE;

}

int aggInitializeRasterBuffer(rasterBufferObj *rb, int width, int height, int mode) {

rb->type = MS_BUFFER_BYTE_RGBA;

rb->data.rgba.pixel_step = 4;

rb->data.rgba.row_step = rb->data.rgba.pixel_step * width;

rb->width = width;

rb->height = height;

int nBytes = rb->data.rgba.row_step * height;

rb->data.rgba.pixels = (band_type*)msSmallCalloc(nBytes,sizeof(band_type));

rb->data.rgba.r = &(rb->data.rgba.pixels[band_order::R]);

rb->data.rgba.g = &(rb->data.rgba.pixels[band_order::G]);

rb->data.rgba.b = &(rb->data.rgba.pixels[band_order::B]);

if(mode == MS_IMAGEMODE_RGBA) {

rb->data.rgba.a = &(rb->data.rgba.pixels[band_order::A]);

}

return MS_SUCCESS;

}

int aggGetRasterBufferHandle(imageObj *img, rasterBufferObj * rb) {

AGG2Renderer *r = AGG_RENDERER(img);

rb->type =MS_BUFFER_BYTE_RGBA;

rb->data.rgba.pixels = r->buffer;

rb->data.rgba.row_step = r->m_rendering_buffer.stride();

rb->data.rgba.pixel_step = 4;

rb->width = r->m_rendering_buffer.width();

rb->height = r->m_rendering_buffer.height();

rb->data.rgba.r = &(r->buffer[band_order::R]);

rb->data.rgba.g = &(r->buffer[band_order::G]);

rb->data.rgba.b = &(r->buffer[band_order::B]);

if(r->use_alpha)

rb->data.rgba.a = &(r->buffer[band_order::A]);

else

rb->data.rgba.a = NULL;

return MS_SUCCESS;

}

int aggGetRasterBufferCopy(imageObj *img, rasterBufferObj *rb) {

AGG2Renderer *r = AGG_RENDERER(img);

aggInitializeRasterBuffer(rb, img->width, img->height, MS_IMAGEMODE_RGBA);

int nBytes = r->m_rendering_buffer.stride()*r->m_rendering_buffer.height();

memcpy(rb->data.rgba.pixels,r->buffer, nBytes);

return MS_SUCCESS;

}

int agg2MergeRasterBuffer(imageObj *dest, rasterBufferObj *overlay, double opacity, int srcX, int srcY,

int dstX, int dstY, int width, int height) {

assert(overlay->type == MS_BUFFER_BYTE_RGBA);

rendering_buffer b(overlay->data.rgba.pixels, overlay->width, overlay->height, overlay->data.rgba.row_step);

pixel_format pf(b);

AGG2Renderer *r = AGG_RENDERER(dest);

mapserver::rect_base<int> src_rect(srcX,srcY,srcX+width,srcY+height);

r->m_renderer_base.blend_from(pf,&src_rect, dstX-srcX, dstY-srcY, unsigned(opacity * 255));

return MS_SUCCESS;

}

/* image i/o */

imageObj *agg2CreateImage(int width, int height, outputFormatObj *format, colorObj * bg) {

imageObj *image = NULL;

if (format->imagemode != MS_IMAGEMODE_RGB && format->imagemode != MS_IMAGEMODE_RGBA) {

msSetError(MS_MISCERR,

"AGG2 driver only supports RGB or RGBA pixel models.", "agg2CreateImage()");

return image;

}

image = (imageObj *) calloc(1, sizeof (imageObj));

MS_CHECK_ALLOC(image, sizeof (imageObj), NULL);

AGG2Renderer *r = new AGG2Renderer();

r->buffer = (band_type*)malloc(width * height * 4 * sizeof(band_type));

if (r->buffer == NULL)

{

msSetError(MS_MEMERR, "%s: %d: Out of memory allocating %u bytes.\n", "agg2CreateImage()",

__FILE__, __LINE__, width * height * 4 * sizeof(band_type));

free(image);

return NULL;

}

r->m_rendering_buffer.attach(r->buffer, width, height, width * 4);

r->m_pixel_format.attach(r->m_rendering_buffer);

r->m_renderer_base.attach(r->m_pixel_format);

r->m_renderer_scanline.attach(r->m_renderer_base);

double gamma = atof(msGetOutputFormatOption( format, "GAMMA", "0.75" ));

if(gamma > 0.0 && gamma < 1.0) {

r->m_rasterizer_aa_gamma.gamma(mapserver::gamma_linear(0.0,gamma));

}

if( bg && !format->transparent )

r->m_renderer_base.clear(aggColor(bg));

else

r->m_renderer_base.clear(AGG_NO_COLOR);

if (!bg || format->transparent || format->imagemode == MS_IMAGEMODE_RGBA ) {

r->use_alpha = true;

} else {

r->use_alpha = false;

}

image->img.plugin = (void*) r;

return image;

}

int agg2SaveImage(imageObj *img, mapObj* map, FILE *fp, outputFormatObj * format) {

msSetError(MS_MISCERR, "AGG2 does not support direct image saving", "agg2SaveImage()");

return MS_FAILURE;

}

/*...*/

/* helper functions */

int agg2GetTruetypeTextBBox(rendererVTableObj *renderer, char **fonts, int numfonts, double size, char *string,

rectObj *rect, double **advances,int bAdjustBaseline) {

aggRendererCache *cache = (aggRendererCache*)MS_RENDERER_CACHE(renderer);

if(aggLoadFont(cache,fonts[0],size) == MS_FAILURE)

return MS_FAILURE;

int curfontidx = 0;

int unicode, curGlyph = 1, numglyphs = 0;

if (advances) {

numglyphs = msGetNumGlyphs(string);

}

const mapserver::glyph_cache* glyph;

string += msUTF8ToUniChar(string, &unicode);

if(curfontidx != 0) {

if(aggLoadFont(cache,fonts[0],size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = 0;

}

glyph = cache->m_fman.glyph(unicode);

if(!glyph || glyph->glyph_index == 0) {

int i;

for(i=1;i<numfonts;i++) {

if(aggLoadFont(cache,fonts[i],size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = i;

glyph = cache->m_fman.glyph(unicode);

if(glyph && glyph->glyph_index != 0) {

break;

}

if (glyph) {

rect->minx = glyph->bounds.x1;

rect->maxx = glyph->bounds.x2;

rect->miny = glyph->bounds.y1;

rect->maxy = bAdjustBaseline?1:glyph->bounds.y2;

} else

return MS_FAILURE;

if (advances) {

*advances = (double*) malloc(numglyphs * sizeof (double));

MS_CHECK_ALLOC(*advances, numglyphs * sizeof (double), MS_FAILURE);

(*advances)[0] = glyph->advance_x;

}

double fx = glyph->advance_x, fy = glyph->advance_y;

while (*string) {

if (advances) {

if (*string == '\r' || *string == '\n')

(*advances)[curGlyph++] = -fx;

}

if (*string == '\r') {

fx = 0;

string++;

continue;

}

if (*string == '\n') {

fx = 0;

fy += ceil(size * AGG_LINESPACE);

string++;

continue;

}

string += msUTF8ToUniChar(string, &unicode);

if(curfontidx != 0) {

if(aggLoadFont(cache,fonts[0],size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = 0;

}

glyph = cache->m_fman.glyph(unicode);

if(!glyph || glyph->glyph_index == 0) {

int i;

for(i=1;i<numfonts;i++) {

if(aggLoadFont(cache,fonts[i],size) == MS_FAILURE)

return MS_FAILURE;

curfontidx = i;

glyph = cache->m_fman.glyph(unicode);

if(glyph && glyph->glyph_index != 0) {

break;

}

if (glyph) {

rect->minx = MS_MIN(rect->minx, fx+glyph->bounds.x1);

rect->miny = MS_MIN(rect->miny, fy+glyph->bounds.y1);

rect->maxx = MS_MAX(rect->maxx, fx+glyph->bounds.x2);

rect->maxy = MS_MAX(rect->maxy, fy+(bAdjustBaseline?1:glyph->bounds.y2));

fx += glyph->advance_x;

fy += glyph->advance_y;

if (advances) {

(*advances)[curGlyph++] = glyph->advance_x;

}

return MS_SUCCESS;

}

int agg2StartNewLayer(imageObj *img, mapObj*map, layerObj *layer) {

return MS_SUCCESS;

}

int agg2CloseNewLayer(imageObj *img, mapObj *map, layerObj *layer) {

return MS_SUCCESS;

}

int agg2FreeImage(imageObj * image) {

AGG2Renderer *r = AGG_RENDERER(image);

free(r->buffer);

delete r;

image->img.plugin = NULL;

return MS_SUCCESS;

}

int agg2FreeSymbol(symbolObj * symbol) {

return MS_SUCCESS;

}

int agg2InitCache(void **vcache) {

aggRendererCache *cache = new aggRendererCache();

*vcache = (void*)cache;

return MS_SUCCESS;

}

int agg2Cleanup(void *vcache) {

aggRendererCache *cache = (aggRendererCache*)vcache;

delete cache;

return MS_SUCCESS;

}

// ------------------------------------------------------------------------

// Function to create a custom hatch symbol based on an arbitrary angle.

// ------------------------------------------------------------------------

static mapserver::path_storage createHatch(double ox, double oy,

double rx, double ry,

int sx, int sy, double angle, double step)

{

mapserver::path_storage path;

//restrict the angle to [0 180[, i.e ]-pi/2,pi/2] in radians

angle = fmod(angle, 360.0);

if(angle < 0) angle += 360;

if(angle >= 180) angle -= 180;

//treat 2 easy cases which would cause divide by 0 in generic case

if(angle==0) {

double y0 = step-fmod(oy-ry,step);

if((oy - ry) < 0) {

y0 -= step;

}

for(double y=y0; y<sy; y+=step) {

path.move_to(0,y);

path.line_to(sx,y);

}

return path;

}

if(angle==90) {

double x0 = step-fmod(ox-rx,step);

if((ox - rx) < 0) {

x0 -= step;

}

for(double x=x0; x<sx; x+=step) {

path.move_to(x,0);

path.line_to(x,sy);

}

return path;

}

double theta = (90-angle)*MS_DEG_TO_RAD; /* theta in ]-pi/2 , pi/2] */

double ct = cos(theta);

double st = sin(theta);

double invct = 1.0/ct;

double invst = 1.0/st;

double r0; /* distance from first hatch line to the top-left (if angle in 0,pi/2)

or bottom-left (if angle in -pi/2,0) corner of the hatch bbox */

double rmax = sqrt((double)(sx*sx+sy*sy)); /* distance to the furthest hatch we will have to create

TODO: this could be optimized for bounding boxes where width is very different than height for

certain hatch angles */

double rref= rx*ct + ry*st; /* distance to the line passing through the refpoint, origin is

(0,0) of the imageObj */

double rcorner; /* distance to the line passing through the topleft or bottomleft corner

of the hatch bbox (origin is (0,0) of imageObj) */

/* calculate the distance from the refpoint to the top right of the path */

if(angle < 90) {

rcorner = ox*ct + oy*st;

r0 = step - fmod(rcorner-rref,step);

if(rcorner-rref<0) r0 -= step;

} else {

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