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mapagg.cpp
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mapagg.cpp
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/******************************************************************************
* $Id$
*
* Project: MapServer
* Purpose: AGG rendering and other AGG related functions.
* Author: Thomas Bonfort and the MapServer team.
*
******************************************************************************
* Copyright (c) 1996-2007 Regents of the University of Minnesota.
*
* 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
{
stroke = NULL;
dash = NULL;
stroke_dash = NULL;
}
~AGG2Renderer() {
if(stroke) {
delete stroke;
}
if(dash) {
delete dash;
}
if(stroke_dash) {
delete stroke_dash;
}
}
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;
mapserver::conv_stroke<line_adaptor> *stroke;
mapserver::conv_dash<line_adaptor> *dash;
mapserver::conv_stroke<mapserver::conv_dash<line_adaptor> > *stroke_dash;
};
#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) {
if(!r->stroke) {
r->stroke = new mapserver::conv_stroke<line_adaptor>(lines);
} else {
r->stroke->attach(lines);
}
r->stroke->width(style->width);
if(style->width>1) {
applyCJC(*r->stroke, style->linecap, style->linejoin);
} else {
r->stroke->inner_join(mapserver::inner_bevel);
r->stroke->line_join(mapserver::bevel_join);
}
r->m_rasterizer_aa.add_path(*r->stroke);
} else {
if(!r->dash) {
r->dash = new mapserver::conv_dash<line_adaptor>(lines);
} else {
r->dash->remove_all_dashes();
r->dash->dash_start(0.0);
r->dash->attach(lines);
}
if(!r->stroke_dash) {
r->stroke_dash = new mapserver::conv_stroke<mapserver::conv_dash<line_adaptor> > (*r->dash);
} else {
r->stroke_dash->attach(*r->dash);
}
int patt_length = 0;
for (int i = 0; i < style->patternlength; i += 2) {
if (i < style->patternlength - 1) {
r->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) {
r->dash->dash_start(patt_length - style->patternoffset);
}
r->stroke_dash->width(style->width);
if(style->width>1) {
applyCJC(*r->stroke_dash, style->linecap, style->linejoin);
} else {
r->stroke_dash->inner_join(mapserver::inner_bevel);
r->stroke_dash->line_join(mapserver::bevel_join);
}
r->m_rasterizer_aa.add_path(*r->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;
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;
}