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index 346e61686a3ffe460b511693602cfffa5b5d14b5..5ff9d2da5ea5366090d46344c44f4ae72de7912d 100644 (file)
* Author:
* Niko Kiirala <niko@kiirala.com>
*
- * Copyright (C) 2006 Niko Kiirala
+ * Copyright (C) 2006-2008 Niko Kiirala
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <glib.h>
+#include <cmath>
+#include <cstring>
+#include <string>
#include "display/nr-filter.h"
#include "display/nr-filter-primitive.h"
-#include "display/nr-filter-gaussian.h"
#include "display/nr-filter-slot.h"
#include "display/nr-filter-types.h"
-#include "display/pixblock-scaler.h"
-
+#include "display/nr-filter-units.h"
+
+#include "display/nr-filter-blend.h"
+#include "display/nr-filter-composite.h"
+#include "display/nr-filter-convolve-matrix.h"
+#include "display/nr-filter-colormatrix.h"
+#include "display/nr-filter-component-transfer.h"
+#include "display/nr-filter-diffuselighting.h"
+#include "display/nr-filter-displacement-map.h"
+#include "display/nr-filter-flood.h"
+#include "display/nr-filter-gaussian.h"
+#include "display/nr-filter-image.h"
+#include "display/nr-filter-merge.h"
+#include "display/nr-filter-morphology.h"
+#include "display/nr-filter-offset.h"
+#include "display/nr-filter-specularlighting.h"
+#include "display/nr-filter-tile.h"
+#include "display/nr-filter-turbulence.h"
+
+#include "display/nr-arena.h"
#include "display/nr-arena-item.h"
#include "libnr/nr-pixblock.h"
#include "libnr/nr-blit.h"
-#include "libnr/nr-matrix.h"
-#include "libnr/nr-scale.h"
+#include <2geom/matrix.h>
+#include <2geom/rect.h>
#include "svg/svg-length.h"
#include "sp-filter-units.h"
+#include "preferences.h"
-//#include "display/nr-arena-shape.h"
+#if defined (SOLARIS) && (SOLARIS == 8)
+#include "round.h"
+using Inkscape::round;
+#endif
-namespace NR {
+namespace Inkscape {
+namespace Filters {
+
+using Geom::X;
+using Geom::Y;
+
+static Geom::OptRect get_item_bbox(NRArenaItem const *item) {
+ Geom::Rect item_bbox;
+ if (item->item_bbox) {
+ item_bbox = *(item->item_bbox);
+ } else {
+ // Bounding box might not exist, so create a dummy one.
+ Geom::Point zero(0, 0);
+ item_bbox = Geom::Rect(zero, zero);
+ }
+ if (item_bbox.min()[X] > item_bbox.max()[X]
+ || item_bbox.min()[Y] > item_bbox.max()[Y])
+ {
+ // In case of negative-size bbox, return an empty OptRect
+ return Geom::OptRect();
+ }
+ return Geom::OptRect(item_bbox);
+}
Filter::Filter()
{
_primitive_count = 0;
_primitive_table_size = 1;
_primitive = new FilterPrimitive*[1];
- _primitive[0] = NULL;
+ _primitive[0] = NULL;
//_primitive_count = 1;
//_primitive[0] = new FilterGaussian;
_common_init();
Filter::Filter(int n)
{
_primitive_count = 0;
- _primitive_table_size = n;
- _primitive = new FilterPrimitive*[n];
- for ( int i = 0 ; i < n ; i++ ) {
+ _primitive_table_size = (n > 0) ? n : 1; // we guarantee there is at least 1(one) filter slot
+ _primitive = new FilterPrimitive*[_primitive_table_size];
+ for ( int i = 0 ; i < _primitive_table_size ; i++ ) {
_primitive[i] = NULL;
}
_common_init();
int Filter::render(NRArenaItem const *item, NRPixBlock *pb)
{
- Matrix trans = *item->ctm;
- FilterSlot slot(_slot_count, item);
- NRPixBlock *in = new NRPixBlock;
+ if (!_primitive[0]) {
+ // TODO: Should clear the input buffer instead of just returning
+ return 1;
+ }
- // First, if filter resolution is not set to automatic, we should
- // scale the input image to correct resolution
- if (_x_pixels >= 0) {
- /* If filter resolution is zero, the object should not be rendered */
- if (_x_pixels == 0 || _y_pixels == 0) {
- int size = (pb->area.x1 - pb->area.x0)
- * (pb->area.y1 - pb->area.y0)
- * NR_PIXBLOCK_BPP(pb);
- memset(NR_PIXBLOCK_PX(pb), 0, size);
- return 0;
+ FilterQuality const filterquality = (FilterQuality)item->arena->filterquality;
+ int const blurquality = item->arena->blurquality;
+
+ Geom::Matrix trans = item->ctm;
+ FilterSlot slot(_slot_count, item);
+ slot.set_quality(filterquality);
+ slot.set_blurquality(blurquality);
+
+ Geom::Rect item_bbox;
+ {
+ Geom::OptRect maybe_bbox = get_item_bbox(item);
+ if (maybe_bbox.isEmpty()) {
+ // Code below needs a bounding box
+ return 1;
}
- // Resolution is specified as pixel length of our internal buffer.
- // Though, we might not be rendering the whole object at time,
- // so we need to calculate the correct pixel size
- int x_len = (int)round(((pb->area.x1 - pb->area.x0) * _x_pixels) / (item->bbox.x1 - item->bbox.x0));
- if (x_len < 1) x_len = 1;
- // If y-resolution is also set, count y-area in the same way as x-area
- // Otherwise, make y-area so, that aspect ratio of input pixblock and
- // internal pixblock are the same.
- int y_len;
- if (_y_pixels > 0) {
- y_len = (int)round(((pb->area.y1 - pb->area.y0) * _y_pixels) / (item->bbox.y1 - item->bbox.y0));
- } else {
- y_len = (int)round((x_len * (pb->area.y1 - pb->area.y0)) / (double)(pb->area.x1 - pb->area.x0));
+ item_bbox = *maybe_bbox;
+ }
+
+ Geom::Rect filter_area = filter_effect_area(item_bbox);
+ if (item_bbox.hasZeroArea()) {
+ // It's no use to try and filter an empty object.
+ return 1;
+ }
+
+ FilterUnits units(_filter_units, _primitive_units);
+ units.set_ctm(trans);
+ units.set_item_bbox(item_bbox);
+ units.set_filter_area(filter_area);
+
+ // TODO: with filterRes of 0x0 should return an empty image
+ std::pair<double,double> resolution
+ = _filter_resolution(filter_area, trans, filterquality);
+ if(!(resolution.first > 0 && resolution.second > 0))
+ return 1;
+ units.set_resolution(resolution.first, resolution.second);
+ if (_x_pixels > 0) {
+ units.set_automatic_resolution(false);
+ }
+ else {
+ units.set_automatic_resolution(true);
+ }
+
+ units.set_paraller(false);
+ for (int i = 0 ; i < _primitive_count ; i++) {
+ if (_primitive[i]->get_input_traits() & TRAIT_PARALLER) {
+ units.set_paraller(true);
+ break;
}
- if (y_len < 1) y_len = 1;
- nr_pixblock_setup_fast(in, pb->mode, 0, 0, x_len, y_len, true);
- if (in->data.px == NULL) // memory allocation failed
- return 0;
- scale_bicubic(in, pb);
- scale res_scaling(x_len / (double)(pb->area.x1 - pb->area.x0),
- y_len / (double)(pb->area.y1 - pb->area.y0));
- trans *= res_scaling;
- } else {
- // If filter resolution is automatic, just make copy of input image
- nr_pixblock_setup_fast(in, pb->mode,
- pb->area.x0, pb->area.y0,
- pb->area.x1, pb->area.y1, true);
- if (in->data.px == NULL) // memory allocation failed
- return 0;
- nr_blit_pixblock_pixblock(in, pb);
}
- slot.set(NR_FILTER_SOURCEGRAPHIC, in);
- in = NULL; // in is now handled by FilterSlot, we should not touch it
- // TODO: loop through the primitives and render them one at a time
- if(_primitive[0])
- _primitive[0]->render(slot, trans);
+ slot.set_units(units);
- NRPixBlock *out = slot.get(_output_slot);
+ NRPixBlock *in = new NRPixBlock;
+ nr_pixblock_setup_fast(in, pb->mode, pb->area.x0, pb->area.y0,
+ pb->area.x1, pb->area.y1, true);
+ if (in->size != NR_PIXBLOCK_SIZE_TINY && in->data.px == NULL) {
+ g_warning("Inkscape::Filters::Filter::render: failed to reserve temporary buffer");
+ return 0;
+ }
+ nr_blit_pixblock_pixblock(in, pb);
+ in->empty = FALSE;
+ slot.set(NR_FILTER_SOURCEGRAPHIC, in);
- // Clear the pixblock, where the output will be put
- // -> the original image does not show through
- int size = (pb->area.x1 - pb->area.x0)
- * (pb->area.y1 - pb->area.y0)
- * NR_PIXBLOCK_BPP(pb);
- memset(NR_PIXBLOCK_PX(pb), 0, size);
+ // Check that we are rendering a non-empty area
+ in = slot.get(NR_FILTER_SOURCEGRAPHIC);
+ if (in->area.x1 - in->area.x0 <= 0 || in->area.y1 - in->area.y0 <= 0) {
+ if (in->area.x1 - in->area.x0 < 0 || in->area.y1 - in->area.y0 < 0) {
+ g_warning("Inkscape::Filters::Filter::render: negative area! (%d, %d) (%d, %d)",
+ in->area.x0, in->area.y0, in->area.x1, in->area.y1);
+ }
+ return 0;
+ }
+ in = NULL; // in is now handled by FilterSlot, we should not touch it
- // If the filter resolution is automatic, just copy our final image
- // to output pixblock, otherwise use bicubic scaling
- if (_x_pixels < 0) {
- nr_blit_pixblock_pixblock(pb, out);
- } else {
- scale_bicubic(pb, out);
+ for (int i = 0 ; i < _primitive_count ; i++) {
+ _primitive[i]->render(slot, units);
}
+ slot.get_final(_output_slot, pb);
+
// Take note of the amount of used image slots
// -> next time this filter is rendered, we can reserve enough slots
// immediately
return 0;
}
-int Filter::get_enlarge(Matrix const &m)
-{
- // Just sum the enlargement factor of all filter elements.
- // TODO: this both sucks and blows for filters like feOffset
- // -> ditch this method and design a better one...
- int enlarge = 0;
- for ( int i = 0 ; i < _primitive_count ; i++ ) {
- if(_primitive[i]) enlarge += _primitive[i]->get_enlarge(m);
+void Filter::set_filter_units(SPFilterUnits unit) {
+ _filter_units = unit;
+}
+
+void Filter::set_primitive_units(SPFilterUnits unit) {
+ _primitive_units = unit;
+}
+
+void Filter::area_enlarge(NRRectL &bbox, NRArenaItem const *item) const {
+ for (int i = 0 ; i < _primitive_count ; i++) {
+ if (_primitive[i]) _primitive[i]->area_enlarge(bbox, item->ctm);
+ }
+/*
+ TODO: something. See images at the bottom of filters.svg with medium-low
+ filtering quality.
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ FilterQuality const filterquality = (FilterQuality)prefs->getInt("/options/filterquality/value");
+
+ if (_x_pixels <= 0 && (filterquality == FILTER_QUALITY_BEST ||
+ filterquality == FILTER_QUALITY_BETTER)) {
+ return;
+ }
+
+ Geom::Rect item_bbox;
+ Geom::OptRect maybe_bbox = get_item_bbox(item);
+ if (maybe_bbox.isEmpty()) {
+ // Code below needs a bounding box
+ return;
}
- return enlarge;
+ item_bbox = *maybe_bbox;
+
+ std::pair<double,double> res_low
+ = _filter_resolution(item_bbox, item->ctm, filterquality);
+ //std::pair<double,double> res_full
+ // = _filter_resolution(item_bbox, item->ctm, FILTER_QUALITY_BEST);
+ double pixels_per_block = fmax(item_bbox.width() / res_low.first,
+ item_bbox.height() / res_low.second);
+ bbox.x0 -= (int)pixels_per_block;
+ bbox.x1 += (int)pixels_per_block;
+ bbox.y0 -= (int)pixels_per_block;
+ bbox.y1 += (int)pixels_per_block;
+*/
+}
+
+void Filter::bbox_enlarge(NRRectL &bbox) {
+ // Modifying empty bounding boxes confuses rest of the renderer, so
+ // let's not do that.
+ if (bbox.x0 > bbox.x1 || bbox.y0 > bbox.y1) return;
+
+ /* TODO: this is wrong. Should use bounding box in user coordinates
+ * and find its extents in display coordinates. */
+ Geom::Point min(bbox.x0, bbox.y0);
+ Geom::Point max(bbox.x1, bbox.y1);
+ Geom::Rect tmp_bbox(min, max);
+
+ Geom::Rect enlarged = filter_effect_area(tmp_bbox);
+
+ bbox.x0 = (NR::ICoord)enlarged.min()[X];
+ bbox.y0 = (NR::ICoord)enlarged.min()[Y];
+ bbox.x1 = (NR::ICoord)enlarged.max()[X];
+ bbox.y1 = (NR::ICoord)enlarged.max()[Y];
}
-void Filter::bbox_enlarge(NRRectL &bbox)
+Geom::Rect Filter::filter_effect_area(Geom::Rect const &bbox)
{
- int len_x = bbox.x1 - bbox.x0;
- int len_y = bbox.y1 - bbox.y0;
+ Geom::Point minp, maxp;
+ double len_x = bbox.max()[X] - bbox.min()[X];
+ double len_y = bbox.max()[Y] - bbox.min()[Y];
/* TODO: fetch somehow the object ex and em lengths */
_region_x.update(12, 6, len_x);
_region_y.update(12, 6, len_y);
_region_height.update(12, 6, len_y);
if (_filter_units == SP_FILTER_UNITS_OBJECTBOUNDINGBOX) {
if (_region_x.unit == SVGLength::PERCENT) {
- bbox.x0 += (ICoord)_region_x.computed;
+ minp[X] = bbox.min()[X] + _region_x.computed;
} else {
- bbox.x0 += (ICoord)(_region_x.computed * len_x);
+ minp[X] = bbox.min()[X] + _region_x.computed * len_x;
}
if (_region_width.unit == SVGLength::PERCENT) {
- bbox.x1 = bbox.x0 + (ICoord)_region_width.computed;
+ maxp[X] = minp[X] + _region_width.computed;
} else {
- bbox.x1 = bbox.x0 + (ICoord)(_region_width.computed * len_x);
+ maxp[X] = minp[X] + _region_width.computed * len_x;
}
if (_region_y.unit == SVGLength::PERCENT) {
- bbox.y0 += (ICoord)_region_y.computed;
+ minp[Y] = bbox.min()[Y] + _region_y.computed;
} else {
- bbox.y0 += (ICoord)(_region_y.computed * len_y);
+ minp[Y] = bbox.min()[Y] + _region_y.computed * len_y;
}
if (_region_height.unit == SVGLength::PERCENT) {
- bbox.y1 = bbox.y0 + (ICoord)_region_height.computed;
+ maxp[Y] = minp[Y] + _region_height.computed;
} else {
- bbox.y1 = bbox.y0 + (ICoord)(_region_height.computed * len_y);
+ maxp[Y] = minp[Y] + _region_height.computed * len_y;
}
} else if (_filter_units == SP_FILTER_UNITS_USERSPACEONUSE) {
/* TODO: make sure bbox and fe region are in same coordinate system */
- bbox.x0 = (ICoord) _region_x.computed;
- bbox.x1 = bbox.x0 + (ICoord) _region_width.computed;
- bbox.y0 = (ICoord) _region_y.computed;
- bbox.y1 = bbox.y0 + (ICoord) _region_height.computed;
+ minp[X] = _region_x.computed;
+ maxp[X] = minp[X] + _region_width.computed;
+ minp[Y] = _region_y.computed;
+ maxp[Y] = minp[Y] + _region_height.computed;
} else {
- g_warning("Error in NR::Filter::bbox_enlarge: unrecognized value of _filter_units");
+ g_warning("Error in Inkscape::Filters::Filter::bbox_enlarge: unrecognized value of _filter_units");
}
+ Geom::Rect area(minp, maxp);
+ return area;
}
/* Constructor table holds pointers to static methods returning filter
* primitives. This table is indexed with FilterPrimitiveType, so that
* for example method in _constructor[NR_FILTER_GAUSSIANBLUR]
- * returns a filter object of type NR::FilterGaussian.
+ * returns a filter object of type Inkscape::Filters::FilterGaussian.
*/
typedef FilterPrimitive*(*FilterConstructor)();
static FilterConstructor _constructor[NR_FILTER_ENDPRIMITIVETYPE];
static bool created = false;
if(created) return;
- /* Filter effects not yet implemented are set to NULL */
- _constructor[NR_FILTER_BLEND] = NULL;
- _constructor[NR_FILTER_COLORMATRIX] = NULL;
- _constructor[NR_FILTER_COMPONENTTRANSFER] = NULL;
- _constructor[NR_FILTER_COMPOSITE] = NULL;
- _constructor[NR_FILTER_CONVOLVEMATRIX] = NULL;
- _constructor[NR_FILTER_DIFFUSELIGHTING] = NULL;
- _constructor[NR_FILTER_DISPLACEMENTMAP] = NULL;
- _constructor[NR_FILTER_FLOOD] = NULL;
+/* Some filter classes are not implemented yet.
+ Some of them still have only boilerplate code.*/
+ _constructor[NR_FILTER_BLEND] = &FilterBlend::create;
+ _constructor[NR_FILTER_COLORMATRIX] = &FilterColorMatrix::create;
+ _constructor[NR_FILTER_COMPONENTTRANSFER] = &FilterComponentTransfer::create;
+ _constructor[NR_FILTER_COMPOSITE] = &FilterComposite::create;
+ _constructor[NR_FILTER_CONVOLVEMATRIX] = &FilterConvolveMatrix::create;
+ _constructor[NR_FILTER_DIFFUSELIGHTING] = &FilterDiffuseLighting::create;
+ _constructor[NR_FILTER_DISPLACEMENTMAP] = &FilterDisplacementMap::create;
+ _constructor[NR_FILTER_FLOOD] = &FilterFlood::create;
_constructor[NR_FILTER_GAUSSIANBLUR] = &FilterGaussian::create;
- _constructor[NR_FILTER_IMAGE] = NULL;
- _constructor[NR_FILTER_MERGE] = NULL;
- _constructor[NR_FILTER_MORPHOLOGY] = NULL;
- _constructor[NR_FILTER_OFFSET] = NULL;
- _constructor[NR_FILTER_SPECULARLIGHTING] = NULL;
- _constructor[NR_FILTER_TILE] = NULL;
- _constructor[NR_FILTER_TURBULENCE] = NULL;
+ _constructor[NR_FILTER_IMAGE] = &FilterImage::create;
+ _constructor[NR_FILTER_MERGE] = &FilterMerge::create;
+ _constructor[NR_FILTER_MORPHOLOGY] = &FilterMorphology::create;
+ _constructor[NR_FILTER_OFFSET] = &FilterOffset::create;
+ _constructor[NR_FILTER_SPECULARLIGHTING] = &FilterSpecularLighting::create;
+ _constructor[NR_FILTER_TILE] = &FilterTile::create;
+ _constructor[NR_FILTER_TURBULENCE] = &FilterTurbulence::create;
created = true;
}
for (int i = _primitive_count ; i < _primitive_table_size ; i++) {
new_tbl[i] = NULL;
}
- delete[] _primitive;
+ if(_primitive != NULL) {
+ delete[] _primitive;
+ } else {
+ g_warning("oh oh");
+ }
_primitive = new_tbl;
}
-FilterPrimitive *Filter::add_primitive(FilterPrimitiveType type)
+int Filter::add_primitive(FilterPrimitiveType type)
{
_create_constructor_table();
// Check that we can create a new filter of specified type
if (type < 0 || type >= NR_FILTER_ENDPRIMITIVETYPE)
- return NULL;
- if (!_constructor[type]) return NULL;
+ return -1;
+ if (!_constructor[type]) return -1;
FilterPrimitive *created = _constructor[type]();
// If there is no space for new filter primitive, enlarge the table
}
_primitive[_primitive_count] = created;
+ int handle = _primitive_count;
_primitive_count++;
- return created;
+ return handle;
}
-FilterPrimitive *Filter::replace_primitive(FilterPrimitive *target, FilterPrimitiveType type)
+int Filter::replace_primitive(int target, FilterPrimitiveType type)
{
_create_constructor_table();
// Check that target is valid primitive inside this filter
- int place = -1;
- for (int i = 0 ; i < _primitive_count ; i++) {
- if (target == _primitive[i]) {
- place = i;
- break;
- }
- }
- if (place < 0) return NULL;
+ if (target < 0) return -1;
+ if (target >= _primitive_count) return -1;
+ if (!_primitive[target]) return -1;
// Check that we can create a new filter of specified type
if (type < 0 || type >= NR_FILTER_ENDPRIMITIVETYPE)
- return NULL;
- if (!_constructor[type]) return NULL;
+ return -1;
+ if (!_constructor[type]) return -1;
FilterPrimitive *created = _constructor[type]();
// If there is no space for new filter primitive, enlarge the table
@@ -312,9 +429,14 @@ FilterPrimitive *Filter::replace_primitive(FilterPrimitive *target, FilterPrimit
_enlarge_primitive_table();
}
- delete target;
- _primitive[place] = created;
- return created;
+ delete _primitive[target];
+ _primitive[target] = created;
+ return target;
+}
+
+FilterPrimitive *Filter::get_primitive(int handle) {
+ if (handle < 0 || handle >= _primitive_count) return NULL;
+ return _primitive[handle];
}
void Filter::clear_primitives()
_primitive_count = 0;
}
-void Filter::set_x(SVGLength &lenght)
-{ /*write me*/ }
-void Filter::set_y(SVGLength &length)
-{ /*write me*/ }
-void Filter::set_width(SVGLength &length)
-{ /*write me*/ }
-void Filter::set_height(SVGLength &length)
-{ /*write me*/ }
+void Filter::set_x(SVGLength const &length)
+{
+ if (length._set)
+ _region_x = length;
+}
+void Filter::set_y(SVGLength const &length)
+{
+ if (length._set)
+ _region_y = length;
+}
+void Filter::set_width(SVGLength const &length)
+{
+ if (length._set)
+ _region_width = length;
+}
+void Filter::set_height(SVGLength const &length)
+{
+ if (length._set)
+ _region_height = length;
+}
+
+void Filter::set_resolution(double const pixels) {
+ if (pixels > 0) {
+ _x_pixels = pixels;
+ _y_pixels = pixels;
+ }
+}
+
+void Filter::set_resolution(double const x_pixels, double const y_pixels) {
+ if (x_pixels >= 0 && y_pixels >= 0) {
+ _x_pixels = x_pixels;
+ _y_pixels = y_pixels;
+ }
+}
+
+void Filter::reset_resolution() {
+ _x_pixels = -1;
+ _y_pixels = -1;
+}
+
+int Filter::_resolution_limit(FilterQuality const quality) const {
+ int limit = -1;
+ switch (quality) {
+ case FILTER_QUALITY_WORST:
+ limit = 32;
+ break;
+ case FILTER_QUALITY_WORSE:
+ limit = 64;
+ break;
+ case FILTER_QUALITY_NORMAL:
+ limit = 256;
+ break;
+ case FILTER_QUALITY_BETTER:
+ case FILTER_QUALITY_BEST:
+ default:
+ break;
+ }
+ return limit;
+}
+
+std::pair<double,double> Filter::_filter_resolution(
+ Geom::Rect const &area, Geom::Matrix const &trans,
+ FilterQuality const filterquality) const
+{
+ std::pair<double,double> resolution;
+ if (_x_pixels > 0) {
+ double y_len;
+ if (_y_pixels > 0) {
+ y_len = _y_pixels;
+ } else {
+ y_len = (_x_pixels * (area.max()[Y] - area.min()[Y]))
+ / (area.max()[X] - area.min()[X]);
+ }
+ resolution.first = _x_pixels;
+ resolution.second = y_len;
+ } else {
+ Geom::Point origo = area.min();
+ origo *= trans;
+ Geom::Point max_i(area.max()[X], area.min()[Y]);
+ max_i *= trans;
+ Geom::Point max_j(area.min()[X], area.max()[Y]);
+ max_j *= trans;
+ double i_len = sqrt((origo[X] - max_i[X]) * (origo[X] - max_i[X])
+ + (origo[Y] - max_i[Y]) * (origo[Y] - max_i[Y]));
+ double j_len = sqrt((origo[X] - max_j[X]) * (origo[X] - max_j[X])
+ + (origo[Y] - max_j[Y]) * (origo[Y] - max_j[Y]));
+ int limit = _resolution_limit(filterquality);
+ if (limit > 0 && (i_len > limit || j_len > limit)) {
+ double aspect_ratio = i_len / j_len;
+ if (i_len > j_len) {
+ i_len = limit;
+ j_len = i_len / aspect_ratio;
+ }
+ else {
+ j_len = limit;
+ i_len = j_len * aspect_ratio;
+ }
+ }
+ resolution.first = i_len;
+ resolution.second = j_len;
+ }
+ return resolution;
+}
-} /* namespace NR */
+} /* namespace Filters */
+} /* namespace Inkscape */
/*
Local Variables:
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :