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231 lines
7.7 KiB
231 lines
7.7 KiB
/*
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* Copyright (c) 2005 Boudewijn Rempt <boud@valdyas.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <tqrect.h>
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#include <tqcheckbox.h>
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#include <kdebug.h>
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#include <kis_brush.h>
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#include <kis_debug_areas.h>
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#include <kis_paint_device.h>
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#include <kis_painter.h>
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#include <kis_types.h>
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#include <kis_paintop.h>
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#include <kis_iterators_pixel.h>
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#include <kis_layer.h>
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#include <kis_meta_registry.h>
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#include <kis_colorspace_factory_registry.h>
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#include "kis_input_device.h"
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#include "kis_wetop.h"
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#include "kis_wet_colorspace.h"
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KisWetOpSettings::KisWetOpSettings(TQWidget *parent)
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: super(parent)
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{
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m_options = new WetPaintOptions(parent, "wet option widget");
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}
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bool KisWetOpSettings::varySize() const
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{
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return m_options->checkSize->isChecked();
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}
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bool KisWetOpSettings::varyWetness() const
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{
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return m_options->checkWetness->isChecked();
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}
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bool KisWetOpSettings::varyStrength() const
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{
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return m_options->checkStrength->isChecked();
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}
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KisPaintOp * KisWetOpFactory::createOp(const KisPaintOpSettings *settings, KisPainter * painter)
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{
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const KisWetOpSettings *wetopSettings = dynamic_cast<const KisWetOpSettings *>(settings);
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Q_ASSERT(settings == 0 || wetopSettings != 0);
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KisPaintOp * op = new KisWetOp(wetopSettings, painter);
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TQ_CHECK_PTR(op);
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return op;
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}
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KisPaintOpSettings* KisWetOpFactory::settings(TQWidget * parent, const KisInputDevice& inputDevice)
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{
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if (inputDevice == KisInputDevice::mouse()) {
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// No options for mouse, only tablet devices
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return 0;
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} else {
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return new KisWetOpSettings(parent);
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}
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}
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KisWetOp::KisWetOp(const KisWetOpSettings * settings, KisPainter * painter)
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: super(painter)
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{
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if (settings) {
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m_size = settings->varySize();
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m_wetness = settings->varyWetness();
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m_strength = settings->varyStrength();
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} else {
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m_size = false;
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m_wetness = false;
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m_strength = false;
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}
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}
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KisWetOp::~KisWetOp()
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{
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}
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void KisWetOp::paintAt(const KisPoint &pos, const KisPaintInformation& info)
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{
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if (!m_painter) return;
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if (!m_painter->device()) return;
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KisPaintDeviceSP device = m_painter->device();
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if (!m_painter->device()) return;
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KisBrush *brush = m_painter->brush();
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Q_ASSERT(brush);
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if (! brush->canPaintFor(info) )
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return;
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KisPaintInformation inf(info);
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if (!m_size)
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inf.pressure = PRESSURE_DEFAULT;
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KisPaintDeviceSP dab = 0;
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if (brush->brushType() == IMAGE || brush->brushType() == PIPE_IMAGE) {
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dab = brush->image(KisMetaRegistry::instance()->csRegistry()->getAlpha8(), inf);
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}
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else {
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KisAlphaMaskSP mask = brush->mask(inf);
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dab = computeDab(mask, KisMetaRegistry::instance()->csRegistry()->getAlpha8());
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}
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KisColorSpace * cs = device->colorSpace();
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if (cs->id() != KisID("WET","")) {
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kdDebug(DBG_AREA_CMS) << "You cannot paint wet paint on dry pixels.\n";
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return;
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}
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KisColor paintColor = m_painter->paintColor();
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paintColor.convertTo(cs);
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// hopefully this does
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// nothing, conversions are bad ( wet->rgb->wet gives horrible mismatches, due to
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// the conversion to rgb actually rendering the paint above white
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WetPack* paintPack = reinterpret_cast<WetPack*>(paintColor.data());
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WetPix paint = paintPack->paint;
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// Get the paint info (we store the strength in the otherwise unused (?) height field of
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// the paint
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// double wetness = paint.w; // XXX: Was unused
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// strength is a double in the 0 - 2 range, but upscaled to TQ_UINT16:
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//kdDebug() << "Original strength as in paint.h: " << paint.h << endl;
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double strength = 2.0 * static_cast<double>(paint.h) / (double)(0xffff);
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//kdDebug() << "Before strength: " << strength << endl;
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if (m_strength)
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strength = strength * (strength + info.pressure) * 0.5;
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else
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strength = strength * (strength + PRESSURE_DEFAULT) * 0.5;
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double pressure = 0.75 + 0.25 * info.pressure;
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//kdDebug() << "info.pressure " << info.pressure << ", local pressure: " << pressure << ", strength: " << strength << endl;
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WetPack currentPack;
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WetPix currentPix;
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double eff_height;
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double press, contact;
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int maskW = brush->maskWidth(inf);
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int maskH = brush->maskHeight(inf);
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KoPoint dest = (pos - (brush->hotSpot(inf)));
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int xStart = (int)dest.x();
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int yStart = (int)dest.y();
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for (int y = 0; y < maskH; y++) {
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KisHLineIteratorPixel dabIt = dab->createHLineIterator(0, y, maskW, false);
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KisHLineIteratorPixel it = device->createHLineIterator(xStart, yStart+y, maskW, true);
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while (!dabIt.isDone()) {
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// This only does something with .paint, and not with adsorb.
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currentPack = *(reinterpret_cast<WetPack*>(it.rawData()));
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WetPix currentData = currentPack.adsorb;
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currentPix = currentPack.paint;
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// Hardcoded threshold for the dab 'strength': above it, it will get painted
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if (*dabIt.rawData() > 125)
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press = pressure * 0.25;
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else
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press = -1;
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//kdDebug() << "After mysterious line, press becomes: " << press << ", this is the same as in the orignal. Good" << endl;
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// XXX - 192 is probably only useful for paper with a texture...
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eff_height = (currentData.h + currentData.w - 192.0) * (1.0 / 255.0);
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contact = (press + eff_height) * 0.2;
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double old_contact = contact;
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if (contact > 0.5)
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contact = 1.0 - 0.5 * exp(-2.0 * contact - 1.0);
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//kdDebug() << "Contact was " << old_contact << " and has become: " << contact << endl;
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if (contact > 0.0001) {
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int v;
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double rnd = rand() * (1.0 / RAND_MAX);
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v = currentPix.rd;
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currentPix.rd = floor(v + (paint.rd * strength - v) * contact + rnd);
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//kdDebug() << "Rd was " << v << " and has become " << currentPix.rd << endl;
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v = currentPix.rw;
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currentPix.rw = floor(v + (paint.rw * strength - v) * contact + rnd);
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v = currentPix.gd;
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currentPix.gd = floor(v + (paint.gd * strength - v) * contact + rnd);
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v = currentPix.gw;
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currentPix.gw = floor(v + (paint.gw * strength - v) * contact + rnd);
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v = currentPix.bd;
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currentPix.bd = floor(v + (paint.bd * strength - v) * contact + rnd);
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v = currentPix.bw;
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currentPix.bw = floor(v + (paint.bw * strength - v) * contact + rnd);
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v = currentPix.w;
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if (m_wetness)
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currentPix.w = (CLAMP(floor(
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v + (paint.w * (0.5 + pressure) - v) * contact + rnd), 0, 512));
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else
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currentPix.w = floor(v + (paint.w - v) * contact + rnd);
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currentPack.paint = currentPix;
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*(reinterpret_cast<WetPack*>(it.rawData())) = currentPack;
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}
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++dabIt;
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++it;
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}
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}
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m_painter->addDirtyRect(TQRect(xStart, yStart, maskW, maskH));
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}
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