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index 95867363b8956b90b46e175584e5681205dc1ecb..f7a04fd50383541d17dbd62f395b26ff993299a5 100644 (file)
* Author:
* Niko Kiirala <niko@kiirala.com>
*
- * Copyright (C) 2006 Niko Kiirala
+ * Copyright (C) 2006,2007 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-slot.h"
#include "display/nr-filter-types.h"
-#include "display/pixblock-scaler.h"
-#include "display/pixblock-transform.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-item.h"
#include "libnr/nr-scale.h"
#include "svg/svg-length.h"
#include "sp-filter-units.h"
-#if defined (SOLARIS_2_8)
+#if defined (SOLARIS) && (SOLARIS == 8)
#include "round.h"
using Inkscape::round;
#endif
-__attribute__ ((const))
-inline static int _max4(const double a, const double b,
- const double c, const double d) {
- double ret = a;
- if (b > ret) ret = b;
- if (c > ret) ret = c;
- if (d > ret) ret = d;
- return (int)round(ret);
-}
-
-__attribute__ ((const))
-inline static int _min4(const double a, const double b,
- const double c, const double d) {
- double ret = a;
- if (b < ret) ret = b;
- if (c < ret) ret = c;
- if (d < ret) ret = d;
- return (int)round(ret);
-}
-
namespace NR {
Filter::Filter()
int Filter::render(NRArenaItem const *item, NRPixBlock *pb)
{
- if(!_primitive[0]) { // if there are no primitives, do nothing
- return 0;
+ if (!_primitive[0]) {
+ // TODO: Should clear the input buffer instead of just returning
+ return 1;
}
- Matrix trans = *item->ctm;
- Matrix paraller_trans = trans;
- bool notparaller = false;
+ Matrix trans = item->ctm;
FilterSlot slot(_slot_count, item);
- NRPixBlock *in = new NRPixBlock;
- // If filter effects region is not paraller to viewport,
- // we must first undo the rotation / shear.
- // It will be redone after filtering.
- // If there is only rotation and uniform scaling (zoom), let's skip this,
- // as it will not make a difference with gaussian blur.
- if ((fabs(trans[1]) > 1e-6 || fabs(trans[2]) > 1e-6) &&
- !(fabs(trans[0] - trans[3]) < 1e-6 && fabs(trans[1] + trans[2]) < 1e-6)) {
- notparaller = true;
-
- // TODO: if filter resolution is specified, scaling should be set
- // according to that
- double scaling_factor = sqrt(trans.expansionX() * trans.expansionX() +
- trans.expansionY() * trans.expansionY());
- scale scaling(scaling_factor, scaling_factor);
- scale scaling_inv(1.0 / scaling_factor, 1.0 / scaling_factor);
- trans *= scaling_inv;
- paraller_trans.set_identity();
- paraller_trans *= scaling;
-
- Matrix itrans = trans.inverse();
- int x0 = pb->area.x0;
- int y0 = pb->area.y0;
- int x1 = pb->area.x1;
- int y1 = pb->area.y1;
- int min_x = _min4(itrans[0] * x0 + itrans[2] * y0 + itrans[4],
- itrans[0] * x0 + itrans[2] * y1 + itrans[4],
- itrans[0] * x1 + itrans[2] * y0 + itrans[4],
- itrans[0] * x1 + itrans[2] * y1 + itrans[4]);
- int max_x = _max4(itrans[0] * x0 + itrans[2] * y0 + itrans[4],
- itrans[0] * x0 + itrans[2] * y1 + itrans[4],
- itrans[0] * x1 + itrans[2] * y0 + itrans[4],
- itrans[0] * x1 + itrans[2] * y1 + itrans[4]);
- int min_y = _min4(itrans[1] * x0 + itrans[3] * y0 + itrans[5],
- itrans[1] * x0 + itrans[3] * y1 + itrans[5],
- itrans[1] * x1 + itrans[3] * y0 + itrans[5],
- itrans[1] * x1 + itrans[3] * y1 + itrans[5]);
- int max_y = _max4(itrans[1] * x0 + itrans[3] * y0 + itrans[5],
- itrans[1] * x0 + itrans[3] * y1 + itrans[5],
- itrans[1] * x1 + itrans[3] * y0 + itrans[5],
- itrans[1] * x1 + itrans[3] * y1 + itrans[5]);
+ Rect item_bbox;
+ try {
+ item_bbox = *item->item_bbox;
+ } catch (NR::IsNothing) {
+ // Bounding box might not exist, so create a dummy one.
+ Point zero(0, 0);
+ item_bbox = Rect(zero, zero);
+ }
+ if (item_bbox.min()[X] > item_bbox.max()[X]
+ || item_bbox.min()[Y] > item_bbox.max()[Y])
+ {
+ // Code below assumes non-negative size.
+ return 1;
+ }
+
+ Rect filter_area = filter_effect_area(item_bbox);
+ if (item_bbox.isEmpty()) {
+ // It's no use to try and filter an empty object.
+ return 1;
+ }
- nr_pixblock_setup_fast(in, pb->mode,
- min_x, min_y,
- max_x, max_y, true);
- if (in->size != NR_PIXBLOCK_SIZE_TINY && in->data.px == NULL) // memory allocation failed
- return 0;
- transform_nearest(in, pb, itrans);
- } else if (_x_pixels >= 0) {
- // If filter resolution is not set to automatic, we should
- // scale the input image to correct resolution
- /* 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;
- }
- // 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;
+ 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
+ if (_x_pixels > 0) {
+ double y_len;
if (_y_pixels > 0) {
- y_len = (int)round(((pb->area.y1 - pb->area.y0) * _y_pixels) / (item->bbox.y1 - item->bbox.y0));
+ y_len = _y_pixels;
} else {
- y_len = (int)round((x_len * (pb->area.y1 - pb->area.y0)) / (double)(pb->area.x1 - pb->area.x0));
+ y_len = (_x_pixels * (filter_area.max()[Y] - filter_area.min()[Y]))
+ / (filter_area.max()[X] - filter_area.min()[X]);
}
- if (y_len < 1) y_len = 1;
- nr_pixblock_setup_fast(in, pb->mode, 0, 0, x_len, y_len, true);
- if (in->size != NR_PIXBLOCK_SIZE_TINY && 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));
- paraller_trans *= res_scaling;
+ units.set_automatic_resolution(false);
+ units.set_resolution(_x_pixels, y_len);
} 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->size != NR_PIXBLOCK_SIZE_TINY && in->data.px == NULL) // memory allocation failed
- return 0;
- nr_blit_pixblock_pixblock(in, pb);
+ Point origo = filter_area.min();
+ origo *= trans;
+ Point max_i(filter_area.max()[X], filter_area.min()[Y]);
+ max_i *= trans;
+ Point max_j(filter_area.min()[X], filter_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]));
+ units.set_automatic_resolution(true);
+ units.set_resolution(i_len, j_len);
}
+
+ 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;
+ }
+ }
+
+ slot.set_units(units);
+
+ 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("NR::Filter::render: failed to reserve temporary buffer");
+ return 0;
+ }
+ nr_blit_pixblock_pixblock(in, pb);
in->empty = FALSE;
slot.set(NR_FILTER_SOURCEGRAPHIC, in);
+
+ // 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("NR::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
for (int i = 0 ; i < _primitive_count ; i++) {
- _primitive[i]->render(slot, paraller_trans);
- }
- NRPixBlock *out = slot.get(_output_slot);
-
- // 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);
-
- if (notparaller) {
- transform_nearest(pb, out, trans);
- } else if (_x_pixels < 0) {
- // If the filter resolution is automatic, just copy our final image
- // to output pixblock, otherwise use bicubic scaling
- nr_blit_pixblock_pixblock(pb, out);
- } else {
- scale_bicubic(pb, out);
+ _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
}
}
-void Filter::bbox_enlarge(NRRectL &bbox)
+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. */
+ Point min(bbox.x0, bbox.y0);
+ Point max(bbox.x1, bbox.y1);
+ Rect tmp_bbox(min, max);
+
+ Rect enlarged = filter_effect_area(tmp_bbox);
+
+ bbox.x0 = (ICoord)enlarged.min()[X];
+ bbox.y0 = (ICoord)enlarged.min()[Y];
+ bbox.x1 = (ICoord)enlarged.max()[X];
+ bbox.y1 = (ICoord)enlarged.max()[Y];
+}
+
+Rect Filter::filter_effect_area(Rect const &bbox)
{
- int len_x = bbox.x1 - bbox.x0;
- int len_y = bbox.y1 - bbox.y0;
+ 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");
}
+ Rect area(minp, maxp);
+ return area;
}
/* Constructor table holds pointers to static methods returning filter
if(created) return;
/* Some filter classes are not implemented yet.
- Filters with constructors appearing in this table are not necessarilly already implemented.
- Some of them still have only boilerplate-code.*/
+ Some of them still have only boilerplate code.*/
_constructor[NR_FILTER_BLEND] = &FilterBlend::create;
- _constructor[NR_FILTER_COLORMATRIX] = NULL;
- _constructor[NR_FILTER_COMPONENTTRANSFER] = NULL;
+ _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] = NULL;
+ _constructor[NR_FILTER_FLOOD] = &FilterFlood::create;
_constructor[NR_FILTER_GAUSSIANBLUR] = &FilterGaussian::create;
_constructor[NR_FILTER_IMAGE] = &FilterImage::create;
_constructor[NR_FILTER_MERGE] = &FilterMerge::create;
- _constructor[NR_FILTER_MORPHOLOGY] = NULL;
+ _constructor[NR_FILTER_MORPHOLOGY] = &FilterMorphology::create;
_constructor[NR_FILTER_OFFSET] = &FilterOffset::create;
_constructor[NR_FILTER_SPECULARLIGHTING] = &FilterSpecularLighting::create;
- _constructor[NR_FILTER_TILE] = NULL;
+ _constructor[NR_FILTER_TILE] = &FilterTile::create;
_constructor[NR_FILTER_TURBULENCE] = &FilterTurbulence::create;
created = true;
}