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koffice/chalk/plugins/filters/bumpmap/bumpmap.cc

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/*
* This file is part of the KDE project
*
* Copyright (c) 2005 Boudewijn <boud@valdyas.org>
* Copyright (c) 2007 Benjamin Schleimer <bensch128@yahoo.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*
* This implementation completely and utterly based on the gimp's bumpmap.c,
* copyright:
* Copyright (C) 1997 Federico Mena Quintero <federico@nuclecu.unam.mx>
* Copyright (C) 1997-2000 Jens Lautenbacher <jtl@gimp.org>
* Copyright (C) 2000 Sven Neumann <sven@gimp.org>
*
*/
#include <stdlib.h>
#include <vector>
#include <tqpoint.h>
#include <tqlayout.h>
#include <tqcombobox.h>
#include <tqcheckbox.h>
#include <tqbuttongroup.h>
#include <tqradiobutton.h>
#include <tqstring.h>
#include <tqpushbutton.h>
#include <tqlineedit.h>
#include <knuminput.h>
#include <tdelocale.h>
#include <kiconloader.h>
#include <kinstance.h>
#include <tdemessagebox.h>
#include <kstandarddirs.h>
#include <tdetempfile.h>
#include <kdebug.h>
#include <kgenericfactory.h>
#include <kcombobox.h>
#include <kis_doc.h>
#include <kis_image.h>
#include <kis_iterators_pixel.h>
#include <kis_layer.h>
#include <kis_filter_registry.h>
#include <kis_global.h>
#include <kis_types.h>
#include <kis_layer.h>
#include <kis_paint_layer.h>
#include <kis_group_layer.h>
#include <kis_adjustment_layer.h>
#include "wdgbumpmap.h"
#include "bumpmap.h"
#define MOD(x, y) \
((x) < 0 ? ((y) - 1 - ((y) - 1 - (x)) % (y)) : (x) % (y))
typedef KGenericFactory<ChalkBumpmap> ChalkBumpmapFactory;
K_EXPORT_COMPONENT_FACTORY( chalkbumpmap, ChalkBumpmapFactory( "chalk" ) )
ChalkBumpmap::ChalkBumpmap(TQObject *parent, const char *name, const TQStringList &)
: KParts::Plugin(parent, name)
{
setInstance(ChalkBumpmapFactory::instance());
if (parent->inherits("KisFilterRegistry")) {
KisFilterRegistry * manager = dynamic_cast<KisFilterRegistry *>(parent);
manager->add(new KisFilterBumpmap());
}
}
ChalkBumpmap::~ChalkBumpmap()
{
}
KisFilterBumpmap::KisFilterBumpmap() : KisFilter(id(), "map", i18n("&Bumpmap..."))
{
}
namespace {
void convertRow(KisPaintDevice * orig, TQ_UINT8 * row, TQ_INT32 x, TQ_INT32 y, TQ_INT32 w, TQ_UINT8 * lut, TQ_INT32 waterlevel)
{
KisColorSpace * csOrig = orig->colorSpace();
KisHLineIteratorPixel origIt = orig->createHLineIterator(x, y, w, false);
for (int i = 0; i < w; ++i) {
row[0] = csOrig->intensity8(origIt.rawData());
row[0] = lut[waterlevel + ((row[0] - waterlevel) * csOrig->getAlpha(origIt.rawData())) / 255];
++row;
++origIt;
}
}
}
void KisFilterBumpmap::process(KisPaintDeviceSP src, KisPaintDeviceSP dst, KisFilterConfiguration* cfg, const TQRect& rect)
{
if (!src) return;
if (!dst) return;
if (!cfg) return;
if (!rect.isValid()) return;
if (rect.isNull()) return;
if (rect.isEmpty()) return;
KisBumpmapConfiguration * config = (KisBumpmapConfiguration*)cfg;
TQ_INT32 xofs, yofs; /// The x,y offset values
TQ_INT32 lx, ly; /* X and Y components of light vector */
TQ_INT32 nz2, nzlz; /* nz^2, nz*lz */
TQ_INT32 background; /* Shade for vertical normals */
double compensation; /* Background compensation */
TQ_UINT8 lut[256]; /* Look-up table for modes */
double azimuth;
double elevation;
TQ_INT32 lz, nz;
TQ_INT32 i;
double n;
// ------------------ Prepare parameters
/* Convert the offsets */
xofs = -config->xofs;
yofs = -config->yofs;
/* Convert to radians */
azimuth = M_PI * config->azimuth / 180.0;
elevation = M_PI * config->elevation / 180.0;
/* Calculate the light vector */
lx = (TQ_INT32)(cos(azimuth) * cos(elevation) * 255.0);
ly = (TQ_INT32)(sin(azimuth) * cos(elevation) * 255.0);
lz = (TQ_INT32)(sin(elevation) * 255.0);
/* Calculate constant Z component of surface normal */
nz = (TQ_INT32)((6 * 255) / config->depth);
nz2 = nz * nz;
nzlz = nz * lz;
/* Optimize for vertical normals */
background = lz;
/* Calculate darkness compensation factor */
compensation = sin(elevation);
/* Create look-up table for map type */
for (i = 0; i < 256; i++)
{
switch (config->type)
{
case SPHERICAL:
n = i / 255.0 - 1.0;
lut[i] = (int) (255.0 * sqrt(1.0 - n * n) + 0.5);
break;
case SINUSOIDAL:
n = i / 255.0;
lut[i] = (int) (255.0 *
(sin((-M_PI / 2.0) + M_PI * n) + 1.0) /
2.0 + 0.5);
break;
case LINEAR:
default:
lut[i] = i;
}
if (config->invert)
lut[i] = 255 - lut[i];
}
// Crate a grayscale layer from the bumpmap layer.
TQRect bmRect;
KisPaintDevice * bumpmap;
if (!config->bumpmap.isNull() && src->image()) {
KisLayerSP l = src->image()->findLayer(config->bumpmap);
KisPaintDeviceSP bumplayer = 0;
KisPaintLayer * pl = dynamic_cast<KisPaintLayer*>(l.data());
if (pl) {
bumplayer = pl->paintDevice();
}
else {
KisGroupLayer * gl = dynamic_cast<KisGroupLayer*>(l.data());
if (gl) {
bumplayer = gl->projection(gl->extent());
}
else {
KisAdjustmentLayer * al = dynamic_cast<KisAdjustmentLayer*>(l.data());
if (al) {
bumplayer = al->cachedPaintDevice();
}
}
}
if (bumplayer) {
bmRect = bumplayer->exactBounds();
bumpmap = bumplayer.data();
}
else {
bmRect = rect;
bumpmap = src;
}
}
if(!bmRect.isValid()) {
bmRect = rect;
bumpmap = src;
}
kdDebug(12345) << "KisFilterBumpmap::process: rect=" << rect << ", bumpmap rect=" << bmRect << "\n";
setProgressTotalSteps(rect.height());
// ---------------------- Load initial three bumpmap scanlines
KisColorSpace * srcCs = src->colorSpace();
TQValueVector<KisChannelInfo *> channels = srcCs->channels();
// One byte per pixel, converted from the bumpmap layer.
TQ_UINT8 * bm_row1 = new TQ_UINT8[bmRect.width()];
TQ_UINT8 * bm_row2 = new TQ_UINT8[bmRect.width()];
TQ_UINT8 * bm_row3 = new TQ_UINT8[bmRect.width()];
TQ_UINT8 * tmp_row;
// ------------------- Map the bumps
TQ_INT32 yofs1, yofs2, yofs3;
// ------------------- Initialize offsets
if (config->tiled) {
yofs2 = MOD (yofs, bmRect.height());
yofs1 = MOD (yofs2 - 1, bmRect.height());
yofs3 = MOD (yofs2 + 1, bmRect.height());
}
else {
yofs2 = 0;
yofs1 = yofs2 - 1;
yofs3 = yofs2 + 1;
}
convertRow(bumpmap, bm_row1, bmRect.x(), yofs1+bmRect.top(), bmRect.width(), lut, config->waterlevel);
convertRow(bumpmap, bm_row2, bmRect.x(), yofs2+bmRect.top(), bmRect.width(), lut, config->waterlevel);
convertRow(bumpmap, bm_row3, bmRect.x(), yofs3+bmRect.top(), bmRect.width(), lut, config->waterlevel);
for (int y = rect.top(); y<=rect.bottom(); y++) {
const TQ_INT32 yBump = y+yofs;
if(config->tiled || (bmRect.top()<=yBump && yBump<=bmRect.bottom()) ) {
// Get the iterators
KisHLineIteratorPixel dstIt = dst->createHLineIterator(rect.x(), y, rect.width(), true);
KisHLineIteratorPixel srcIt = src->createHLineIterator(rect.x(), y, rect.width(), false);
//while (x < sel_w || cancelRequested()) {
while (!srcIt.isDone() && !cancelRequested()) {
if (srcIt.isSelected()) {
const TQ_INT32 xBump = srcIt.x()+xofs;
TQ_INT32 nx, ny;
// Calculate surface normal from bumpmap
if (config->tiled || bmRect.left() <= xBump && xBump <= bmRect.right()) {
TQ_INT32 xofs1, xofs2, xofs3;
if (config->tiled) {
xofs2 = MOD (xBump-bmRect.left(), bmRect.width());
xofs1 = MOD (xofs2 - 1, bmRect.width());
xofs3 = MOD (xofs2 + 1, bmRect.width());
} else {
xofs2 = MOD (xBump-bmRect.left(), bmRect.width());
xofs1 = ::max (xofs2 - 1, 0);
xofs3 = ::min (xofs2 + 1, bmRect.width());
}
nx = (bm_row1[xofs1] + bm_row2[xofs1] + bm_row3[xofs1] -
bm_row1[xofs3] - bm_row2[xofs3] - bm_row3[xofs3]);
ny = (bm_row3[xofs1] + bm_row3[xofs2] + bm_row3[xofs3] -
bm_row1[xofs1] - bm_row1[xofs2] - bm_row1[xofs3]);
} else {
nx = 0;
ny = 0;
}
// Shade
TQ_INT32 shade;
if ((nx == 0) && (ny == 0)) {
shade = background;
} else {
TQ_INT32 ndotl = (nx * lx) + (ny * ly) + nzlz;
if (ndotl < 0) {
shade = (TQ_INT32)(compensation * config->ambient);
} else {
shade = (TQ_INT32)(ndotl / sqrt(nx * nx + ny * ny + nz2));
shade = (TQ_INT32)(shade + TQMAX(0, (255 * compensation - shade)) * config->ambient / 255);
}
}
// Paint
srcCs->darken(srcIt.rawData(), dstIt.rawData(), shade, config->compensate, compensation, 1);
}
++srcIt;
++dstIt;
}
// Go to the next row
tmp_row = bm_row1;
bm_row1 = bm_row2;
bm_row2 = bm_row3;
bm_row3 = tmp_row;
yofs2++;
if (yofs2 >= bmRect.height()) { yofs2 = 0; }
if (config->tiled) {
yofs3 = MOD (yofs2 + 1, bmRect.height());
} else {
yofs3 = yofs2 + 1;
}
convertRow(bumpmap, bm_row3, bmRect.x(), yofs3+bmRect.top(), bmRect.width(), lut, config->waterlevel);
}
incProgress();
}
delete [] bm_row1;
delete [] bm_row2;
delete [] bm_row3;
setProgressDone();
}
KisFilterConfigWidget * KisFilterBumpmap::createConfigurationWidget(TQWidget* parent, KisPaintDeviceSP dev)
{
KisBumpmapConfigWidget * w = new KisBumpmapConfigWidget(this, dev, parent);
return w;
}
KisFilterConfiguration * KisFilterBumpmap::configuration(TQWidget * w)
{
KisBumpmapConfigWidget * widget = dynamic_cast<KisBumpmapConfigWidget *>(w);
if (widget == 0) {
return new KisBumpmapConfiguration();
}
else {
return widget->config();
}
}
KisFilterConfiguration * KisFilterBumpmap::configuration()
{
return new KisBumpmapConfiguration();
}
KisBumpmapConfiguration::KisBumpmapConfiguration()
: KisFilterConfiguration( "bumpmap", 1 )
{
bumpmap = TQString();
azimuth = 135.0;
elevation = 45.0;
depth = 3;
xofs = 0;
yofs = 0;
waterlevel = 0;
ambient = 0;
compensate = true;
invert = false;
tiled = true;
type = chalk::LINEAR;
}
void KisBumpmapConfiguration::fromXML(const TQString & s)
{
KisFilterConfiguration::fromXML( s );
bumpmap = TQString();
azimuth = 135.0;
elevation = 45.0;
depth = 3;
xofs = 0;
yofs = 0;
waterlevel = 0;
ambient = 0;
compensate = true;
invert = false;
tiled = true;
type = chalk::LINEAR;
TQVariant v;
v = getProperty("bumpmap");
if (v.isValid()) { bumpmap = v.asString(); }
v = getProperty("azimuth");
if (v.isValid()) { azimuth = v.asDouble(); }
v = getProperty("elevation");
if (v.isValid()) { elevation = v.asDouble();}
v = getProperty("depth");
if (v.isValid()) { depth = v.asDouble(); }
v = getProperty("xofs");
if (v.isValid()) { xofs = v.asInt(); }
v = getProperty("yofs");
if (v.isValid()) { yofs = v.asInt();}
v = getProperty("waterlevel");
if (v.isValid()) { waterlevel = v.asInt();}
v = getProperty("ambient");
if (v.isValid()) { ambient = v.asInt();}
v = getProperty("compensate");
if (v.isValid()) { compensate = v.asBool(); }
v = getProperty("invert");
if (v.isValid()) { invert = v.asBool(); }
v = getProperty("tiled");
if (v.isValid()) { tiled = v.asBool();}
v = getProperty("type");
if (v.isValid()) { type = (enumBumpmapType)v.asInt(); }
}
TQString KisBumpmapConfiguration::toString()
{
m_properties.clear();
//setProperty("bumpmap", TQVariant(bumpmap));
setProperty("azimuth", TQVariant(azimuth));
setProperty("elevation", TQVariant(elevation));
setProperty("depth", TQVariant(depth));
setProperty("xofs", TQVariant(xofs));
setProperty("yofs", TQVariant(yofs));
setProperty("waterlevel", TQVariant(waterlevel));
setProperty("ambient", TQVariant(ambient));
setProperty("compensate", TQVariant(compensate));
setProperty("invert", TQVariant(invert));
setProperty("tiled", TQVariant(tiled));
setProperty("type", TQVariant(type));
return KisFilterConfiguration::toString();
}
KisBumpmapConfigWidget::KisBumpmapConfigWidget(KisFilter *, KisPaintDeviceSP dev, TQWidget * parent, const char * name, WFlags f)
: KisFilterConfigWidget(parent, name, f)
{
m_page = new WdgBumpmap(this);
TQHBoxLayout * l = new TQHBoxLayout(this);
TQ_CHECK_PTR(l);
l->add(m_page);
// Find all of the layers in the group
if(dev->image() ) {
KisGroupLayerSP root = dev->image()->rootLayer();
for(KisLayerSP layer = root->firstChild(); layer; layer = layer->nextSibling())
{
m_page->cboxSourceLayer->insertItem(layer->name());
}
}
// Connect all of the widgets to update signal
connect( m_page->radioLinear, TQT_SIGNAL( toggled(bool)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->radioSpherical, TQT_SIGNAL( toggled(bool)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->radioSinusoidal, TQT_SIGNAL( toggled(bool)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->chkCompensate, TQT_SIGNAL( toggled(bool)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->chkInvert, TQT_SIGNAL( toggled(bool)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->chkTiled, TQT_SIGNAL( toggled(bool)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->dblAzimuth, TQT_SIGNAL( valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->dblElevation, TQT_SIGNAL( valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->dblDepth, TQT_SIGNAL( valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->intXOffset, TQT_SIGNAL( valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->intYOffset, TQT_SIGNAL( valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->intWaterLevel, TQT_SIGNAL( valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
connect( m_page->intAmbient, TQT_SIGNAL( valueChanged(int)), TQT_SIGNAL(sigPleaseUpdatePreview()));
}
KisBumpmapConfiguration * KisBumpmapConfigWidget::config()
{
KisBumpmapConfiguration * cfg = new KisBumpmapConfiguration();
cfg->bumpmap = m_page->cboxSourceLayer->currentText();
cfg->azimuth = m_page->dblAzimuth->value();
cfg->elevation = m_page->dblElevation->value();
cfg->depth = m_page->dblDepth->value();
cfg->xofs = m_page->intXOffset->value();
cfg->yofs = m_page->intYOffset->value();
cfg->waterlevel = m_page->intWaterLevel->value();
cfg->ambient = m_page->intAmbient->value();
cfg->compensate = m_page->chkCompensate->isChecked();
cfg->invert = m_page->chkInvert->isChecked();
cfg->tiled = m_page->chkTiled->isChecked();
cfg->type = (enumBumpmapType)m_page->grpType->selectedId();
return cfg;
}
void KisBumpmapConfigWidget::setConfiguration(KisFilterConfiguration * config)
{
KisBumpmapConfiguration * cfg = dynamic_cast<KisBumpmapConfiguration*>(config);
if (!cfg) return;
// NOTE: maybe we should find the item instead?
m_page->cboxSourceLayer->setCurrentText( cfg->bumpmap );
m_page->dblAzimuth->setValue(cfg->azimuth);
m_page->dblElevation->setValue(cfg->elevation);
m_page->dblDepth->setValue(cfg->depth);
m_page->intXOffset->setValue(cfg->xofs);
m_page->intYOffset->setValue(cfg->yofs);
m_page->intWaterLevel->setValue(cfg->waterlevel);
m_page->intAmbient->setValue(cfg->ambient);
m_page->chkCompensate->setChecked(cfg->compensate);
m_page->chkInvert->setChecked(cfg->invert);
m_page->chkTiled->setChecked(cfg->tiled);
m_page->grpType->setButton(cfg->type);
}
#include "bumpmap.moc"
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