Chris@58: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@59:     Sonic Visualiser
Chris@59:     An audio file viewer and annotation editor.
Chris@59:     Centre for Digital Music, Queen Mary, University of London.
Chris@182:     This file copyright 2006 Chris Cannam and QMUL.
Chris@0:     
Chris@59:     This program is free software; you can redistribute it and/or
Chris@59:     modify it under the terms of the GNU General Public License as
Chris@59:     published by the Free Software Foundation; either version 2 of the
Chris@59:     License, or (at your option) any later version.  See the file
Chris@59:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "Colour3DPlotLayer.h"
Chris@0: 
Chris@128: #include "view/View.h"
Chris@0: #include "base/Profiler.h"
Chris@0: 
Chris@0: #include <QPainter>
Chris@0: #include <QImage>
Chris@0: #include <QRect>
Chris@0: 
Chris@0: #include <iostream>
Chris@0: 
Chris@0: #include <cassert>
Chris@0: 
Chris@125: //#define DEBUG_COLOUR_3D_PLOT_LAYER_PAINT 1
Chris@125: 
Chris@0: 
Chris@44: Colour3DPlotLayer::Colour3DPlotLayer() :
Chris@0:     m_model(0),
Chris@159:     m_cache(0),
Chris@159:     m_colourScale(LinearScale)
Chris@0: {
Chris@44:     
Chris@0: }
Chris@0: 
Chris@0: Colour3DPlotLayer::~Colour3DPlotLayer()
Chris@0: {
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Colour3DPlotLayer::setModel(const DenseThreeDimensionalModel *model)
Chris@0: {
Chris@193:     if (m_model == model) return;
Chris@193:     const DenseThreeDimensionalModel *oldModel = m_model;
Chris@0:     m_model = model;
Chris@0:     if (!m_model || !m_model->isOK()) return;
Chris@0: 
Chris@0:     connect(m_model, SIGNAL(modelChanged()), this, SIGNAL(modelChanged()));
Chris@0:     connect(m_model, SIGNAL(modelChanged(size_t, size_t)),
Chris@0: 	    this, SIGNAL(modelChanged(size_t, size_t)));
Chris@0: 
Chris@0:     connect(m_model, SIGNAL(completionChanged()),
Chris@0: 	    this, SIGNAL(modelCompletionChanged()));
Chris@0: 
Chris@0:     connect(m_model, SIGNAL(modelChanged()), this, SLOT(cacheInvalid()));
Chris@0:     connect(m_model, SIGNAL(modelChanged(size_t, size_t)),
Chris@0: 	    this, SLOT(cacheInvalid(size_t, size_t)));
Chris@0: 
Chris@0:     emit modelReplaced();
Chris@193:     emit sliceableModelReplaced(oldModel, model);
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Colour3DPlotLayer::cacheInvalid()
Chris@0: {
Chris@0:     delete m_cache; 
Chris@0:     m_cache = 0;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Colour3DPlotLayer::cacheInvalid(size_t, size_t)
Chris@0: {
Chris@0:     cacheInvalid();
Chris@0: }
Chris@0: 
Chris@159: Layer::PropertyList
Chris@159: Colour3DPlotLayer::getProperties() const
Chris@159: {
Chris@159:     PropertyList list;
Chris@159:     list.push_back("Colour Scale");
Chris@159:     return list;
Chris@159: }
Chris@159: 
Chris@159: QString
Chris@159: Colour3DPlotLayer::getPropertyLabel(const PropertyName &name) const
Chris@159: {
Chris@159:     if (name == "Colour Scale") return tr("Colour Scale");
Chris@159:     return "";
Chris@159: }
Chris@159: 
Chris@159: Layer::PropertyType
Chris@159: Colour3DPlotLayer::getPropertyType(const PropertyName &name) const
Chris@159: {
Chris@159:     return ValueProperty;
Chris@159: }
Chris@159: 
Chris@159: QString
Chris@159: Colour3DPlotLayer::getPropertyGroupName(const PropertyName &name) const
Chris@159: {
Chris@159:     return QString();
Chris@159: }
Chris@159: 
Chris@159: int
Chris@159: Colour3DPlotLayer::getPropertyRangeAndValue(const PropertyName &name,
Chris@159:                                         int *min, int *max) const
Chris@159: {
Chris@159:     int deft = 0;
Chris@159: 
Chris@159:     int garbage0, garbage1;
Chris@159:     if (!min) min = &garbage0;
Chris@159:     if (!max) max = &garbage1;
Chris@159: 
Chris@159:     if (name == "Colour Scale") {
Chris@159: 
Chris@159: 	*min = 0;
Chris@159: 	*max = 3;
Chris@159: 
Chris@159: 	deft = (int)m_colourScale;
Chris@159: 
Chris@159:     } else {
Chris@159: 	deft = Layer::getPropertyRangeAndValue(name, min, max);
Chris@159:     }
Chris@159: 
Chris@159:     return deft;
Chris@159: }
Chris@159: 
Chris@159: QString
Chris@159: Colour3DPlotLayer::getPropertyValueLabel(const PropertyName &name,
Chris@159: 				    int value) const
Chris@159: {
Chris@159:     if (name == "Colour Scale") {
Chris@159: 	switch (value) {
Chris@159: 	default:
Chris@159: 	case 0: return tr("Linear");
Chris@159: 	case 1: return tr("Absolute");
Chris@159: 	case 2: return tr("Meter");
Chris@159: 	case 3: return tr("dB");
Chris@159: 	}
Chris@159:     }
Chris@159:     return tr("<unknown>");
Chris@159: }
Chris@159: 
Chris@159: void
Chris@159: Colour3DPlotLayer::setProperty(const PropertyName &name, int value)
Chris@159: {
Chris@159:     if (name == "Colour Scale") {
Chris@159: 	switch (value) {
Chris@159: 	default:
Chris@159: 	case 0: setColourScale(LinearScale); break;
Chris@159: 	case 1: setColourScale(AbsoluteScale); break;
Chris@159: 	case 2: setColourScale(MeterScale); break;
Chris@159: 	case 3: setColourScale(dBScale); break;
Chris@159: 	}
Chris@159:     }
Chris@159: }
Chris@159: 
Chris@159: void
Chris@159: Colour3DPlotLayer::setColourScale(ColourScale scale)
Chris@159: {
Chris@159:     if (m_colourScale == scale) return;
Chris@159:     m_colourScale = scale;
Chris@159:     cacheInvalid();
Chris@159:     emit layerParametersChanged();
Chris@159: }
Chris@159: 
Chris@25: bool
Chris@44: Colour3DPlotLayer::isLayerScrollable(const View *v) const
Chris@25: {
Chris@25:     QPoint discard;
Chris@44:     return !v->shouldIlluminateLocalFeatures(this, discard);
Chris@25: }
Chris@25: 
Chris@25: QString
Chris@44: Colour3DPlotLayer::getFeatureDescription(View *v, QPoint &pos) const
Chris@25: {
Chris@25:     if (!m_model) return "";
Chris@25: 
Chris@25:     int x = pos.x();
Chris@25:     int y = pos.y();
Chris@25: 
Chris@25:     size_t modelStart = m_model->getStartFrame();
Chris@130:     size_t modelResolution = m_model->getResolution();
Chris@25: 
Chris@159:     float srRatio =
Chris@159:         float(v->getViewManager()->getMainModelSampleRate()) /
Chris@159:         float(m_model->getSampleRate());
Chris@159: 
Chris@160:     int sx0 = int((v->getFrameForX(x) / srRatio - long(modelStart)) /
Chris@160:                   long(modelResolution));
Chris@25: 
Chris@160:     int f0 = sx0 * modelResolution;
Chris@160:     int f1 =  f0 + modelResolution;
Chris@160: 
Chris@160:     float binHeight = float(v->height()) / m_model->getHeight();
Chris@44:     int sy = (v->height() - y) / binHeight;
Chris@25: 
Chris@160:     float value = m_model->getValueAt(sx0, sy);
Chris@159: 
Chris@159: //    std::cerr << "bin value (" << sx0 << "," << sy << ") is " << value << std::endl;
Chris@25:     
Chris@25:     QString binName = m_model->getBinName(sy);
Chris@25:     if (binName == "") binName = QString("[%1]").arg(sy + 1);
Chris@25:     else binName = QString("%1 [%2]").arg(binName).arg(sy + 1);
Chris@25: 
Chris@25:     QString text = tr("Time:\t%1 - %2\nBin:\t%3\nValue:\t%4")
Chris@160: 	.arg(RealTime::frame2RealTime(f0, m_model->getSampleRate())
Chris@25: 	     .toText(true).c_str())
Chris@160: 	.arg(RealTime::frame2RealTime(f1, m_model->getSampleRate())
Chris@25: 	     .toText(true).c_str())
Chris@25: 	.arg(binName)
Chris@25: 	.arg(value);
Chris@25: 
Chris@25:     return text;
Chris@25: }
Chris@25: 
Chris@25: int
Chris@159: Colour3DPlotLayer::getColourScaleWidth(QPainter &paint) const
Chris@159: {
Chris@159:     int cw = 20;
Chris@159:     return cw;
Chris@159: }
Chris@159: 
Chris@159: int
Chris@44: Colour3DPlotLayer::getVerticalScaleWidth(View *v, QPainter &paint) const
Chris@25: {
Chris@25:     if (!m_model) return 0;
Chris@25: 
Chris@160:     QString sampleText = QString("[%1]").arg(m_model->getHeight());
Chris@25:     int tw = paint.fontMetrics().width(sampleText);
Chris@98:     bool another = false;
Chris@25: 
Chris@160:     for (size_t i = 0; i < m_model->getHeight(); ++i) {
Chris@25: 	if (m_model->getBinName(i).length() > sampleText.length()) {
Chris@25: 	    sampleText = m_model->getBinName(i);
Chris@98:             another = true;
Chris@25: 	}
Chris@25:     }
Chris@98:     if (another) {
Chris@25: 	tw = std::max(tw, paint.fontMetrics().width(sampleText));
Chris@25:     }
Chris@25: 
Chris@159:     return tw + 13 + getColourScaleWidth(paint);
Chris@25: }
Chris@25: 
Chris@25: void
Chris@44: Colour3DPlotLayer::paintVerticalScale(View *v, QPainter &paint, QRect rect) const
Chris@25: {
Chris@25:     if (!m_model) return;
Chris@25: 
Chris@25:     int h = rect.height(), w = rect.width();
Chris@160:     float binHeight = float(v->height()) / m_model->getHeight();
Chris@25: 
Chris@159:     int cw = getColourScaleWidth(paint);
Chris@159:     
Chris@159:     int ch = h - 20;
Chris@159:     if (ch > 20 && m_cache) {
Chris@159: 
Chris@159:         paint.setPen(Qt::black);
Chris@159:         paint.drawRect(4, 10, cw - 8, ch - 19);
Chris@159: 
Chris@159:         for (int y = 0; y < ch - 20; ++y) {
Chris@159:             QRgb c = m_cache->color(((ch - 20 - y) * 255) / (ch - 20));
Chris@159: //            std::cerr << "y = " << y << ": rgb " << qRed(c) << "," << qGreen(c) << "," << qBlue(c) << std::endl;
Chris@159:             paint.setPen(QColor(qRed(c), qGreen(c), qBlue(c)));
Chris@159:             paint.drawLine(5, 11 + y, cw - 5, 11 + y);
Chris@159:         }
Chris@159:     }
Chris@159: 
Chris@159:     paint.setPen(Qt::black);
Chris@159: 
Chris@98:     int count = v->height() / paint.fontMetrics().height();
Chris@160:     int step = m_model->getHeight() / count;
Chris@98:     if (step == 0) step = 1;
Chris@25: 
Chris@160:     for (size_t i = 0; i < m_model->getHeight(); ++i) {
Chris@25: 
Chris@98:         if ((i % step) != 0) continue;
Chris@98: 
Chris@44: 	int y0 = v->height() - (i * binHeight) - 1;
Chris@25: 	
Chris@25: 	QString text = m_model->getBinName(i);
Chris@25: 	if (text == "") text = QString("[%1]").arg(i + 1);
Chris@25: 
Chris@159: 	paint.drawLine(cw, y0, w, y0);
Chris@25: 
Chris@98: 	int cy = y0 - (step * binHeight)/2;
Chris@25: 	int ty = cy + paint.fontMetrics().ascent()/2;
Chris@25: 
Chris@159: 	paint.drawText(cw + 5, ty, text);
Chris@25:     }
Chris@25: }
Chris@25: 
Chris@0: void
Chris@44: Colour3DPlotLayer::paint(View *v, QPainter &paint, QRect rect) const
Chris@0: {
Chris@0: //    Profiler profiler("Colour3DPlotLayer::paint");
Chris@125: #ifdef DEBUG_COLOUR_3D_PLOT_LAYER_PAINT
Chris@125:     std::cerr << "Colour3DPlotLayer::paint(): m_model is " << m_model << ", zoom level is " << v->getZoomLevel() << std::endl;
Chris@125: #endif
Chris@0: 
Chris@0:     int completion = 0;
Chris@0:     if (!m_model || !m_model->isOK() || !m_model->isReady(&completion)) {
Chris@0: 	if (completion > 0) {
Chris@44: 	    paint.fillRect(0, 10, v->width() * completion / 100,
Chris@0: 			   10, QColor(120, 120, 120));
Chris@0: 	}
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     size_t modelStart = m_model->getStartFrame();
Chris@0:     size_t modelEnd = m_model->getEndFrame();
Chris@130:     size_t modelResolution = m_model->getResolution();
Chris@0: 
Chris@130:     size_t cacheWidth = (modelEnd - modelStart) / modelResolution + 1;
Chris@160:     size_t cacheHeight = m_model->getHeight();
Chris@12: 
Chris@12:     if (m_cache &&
Chris@12: 	(m_cache->width() != cacheWidth ||
Chris@12: 	 m_cache->height() != cacheHeight)) {
Chris@12: 
Chris@12: 	delete m_cache;
Chris@12: 	m_cache = 0;
Chris@12:     }
Chris@12: 
Chris@159:     if (!m_cache) { 
Chris@0: 
Chris@12: 	m_cache = new QImage(cacheWidth, cacheHeight, QImage::Format_Indexed8);
Chris@0: 
Chris@159:         std::cerr << "Cache size " << cacheWidth << "x" << cacheHeight << std::endl;
Chris@159: 
Chris@0: 	m_cache->setNumColors(256);
Chris@160: 	DenseThreeDimensionalModel::Column values;
Chris@0: 
Chris@0: 	float min = m_model->getMinimumLevel();
Chris@0: 	float max = m_model->getMaximumLevel();
Chris@0: 
Chris@0: 	if (max == min) max = min + 1.0;
Chris@0: 
Chris@159:         int zeroIndex = 0;
Chris@159:         if (min < 0.f) {
Chris@159:             if (m_colourScale == LinearScale) {
Chris@159:                 zeroIndex = int(((-min) * 256) / (max - min));
Chris@159:             } else {
Chris@159:                 max = std::max(-min, max);
Chris@159:                 min = 0;
Chris@159:             }
Chris@159:         }
Chris@159:         if (zeroIndex < 0) zeroIndex = 0;
Chris@159:         if (zeroIndex > 255) zeroIndex = 255;
Chris@159: 
Chris@159:         //!!! want this and spectrogram to share a colour mapping unit
Chris@159: 
Chris@159: 	for (int index = 0; index < 256; ++index) {
Chris@159:             int effective = abs(((index - zeroIndex) * 255) /
Chris@159:                                 std::max(255 - zeroIndex, zeroIndex));
Chris@159: 	    int hue = 256 - effective;
Chris@159:             if (zeroIndex > 0) {
Chris@159:                 if (index <= zeroIndex) hue = 255;
Chris@159:                 else hue = 0;
Chris@159:             }
Chris@159:             while (hue < 0) hue += 255;
Chris@159:             while (hue > 255) hue -= 255;
Chris@159:             int saturation = effective / 2 + 128;
Chris@159:             if (saturation < 0) saturation = -saturation;
Chris@159:             if (saturation > 255) saturation = 255;
Chris@159:             int value = effective;
Chris@159:             if (value < 0) value = -value;
Chris@159:             if (value > 255) value = 255;
Chris@159: //            std::cerr << "min: " << min << ", max: " << max << ", zi " << zeroIndex << ", index " << index << ": " << hue << ", " << saturation << ", " << value << std::endl;
Chris@159: 	    QColor colour = QColor::fromHsv(hue, saturation, value);
Chris@159: //            std::cerr << "rgb: " << colour.red() << "," << colour.green() << "," << colour.blue() << std::endl;
Chris@159: 	    m_cache->setColor(index, qRgb(colour.red(), colour.green(), colour.blue()));
Chris@0: 	}
Chris@0: 
Chris@159: 	m_cache->fill(zeroIndex);
Chris@0: 
Chris@130: 	for (size_t f = modelStart; f <= modelEnd; f += modelResolution) {
Chris@0: 	
Chris@0: 	    values.clear();
Chris@160: 	    m_model->getColumn(f / modelResolution, values);
Chris@0: 	    
Chris@160: 	    for (size_t y = 0; y < m_model->getHeight(); ++y) {
Chris@0: 
Chris@0: 		float value = min;
Chris@159: 		if (y < values.size()) {
Chris@159:                     value = values[y];
Chris@159:                     if (m_colourScale != LinearScale) {
Chris@159:                         value = fabs(value);
Chris@159:                     }
Chris@159:                 }
Chris@0: 
Chris@0: 		int pixel = int(((value - min) * 256) / (max - min));
Chris@98:                 if (pixel < 0) pixel = 0;
Chris@98: 		if (pixel > 255) pixel = 255;
Chris@24: 
Chris@130: 		m_cache->setPixel(f / modelResolution, y, pixel);
Chris@0: 	    }
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@160:     if (m_model->getHeight() >= v->height() ||
Chris@159:         modelResolution < v->getZoomLevel() / 2) {
Chris@98:         paintDense(v, paint, rect);
Chris@98:         return;
Chris@98:     }
Chris@98: 
Chris@0:     int x0 = rect.left();
Chris@0:     int x1 = rect.right() + 1;
Chris@0: 
Chris@44:     int h = v->height();
Chris@0: 
Chris@0:     // The cache is from the model's start frame to the model's end
Chris@0:     // frame at the model's window increment frames per pixel.  We
Chris@0:     // want to draw from our start frame + x0 * zoomLevel to our start
Chris@0:     // frame + x1 * zoomLevel at zoomLevel frames per pixel.
Chris@0: 
Chris@0:     //!!! Strictly speaking we want quite different paint mechanisms
Chris@0:     //for models that have more than one bin per pixel in either
Chris@0:     //direction.  This one is only really appropriate for models with
Chris@0:     //far fewer bins in both directions.
Chris@0: 
Chris@159:     float srRatio =
Chris@159:         float(v->getViewManager()->getMainModelSampleRate()) /
Chris@159:         float(m_model->getSampleRate());
Chris@159: 
Chris@159:     int sx0 = int((v->getFrameForX(x0) / srRatio - long(modelStart)) / long(modelResolution));
Chris@159:     int sx1 = int((v->getFrameForX(x1) / srRatio - long(modelStart)) / long(modelResolution));
Chris@160:     int sh = m_model->getHeight();
Chris@0: 
Chris@125: #ifdef DEBUG_COLOUR_3D_PLOT_LAYER_PAINT
Chris@0:     std::cerr << "Colour3DPlotLayer::paint: w " << w << ", h " << h << ", sx0 " << sx0 << ", sx1 " << sx1 << ", sw " << sw << ", sh " << sh << std::endl;
Chris@130:     std::cerr << "Colour3DPlotLayer: sample rate is " << m_model->getSampleRate() << ", resolution " << m_model->getResolution() << std::endl;
Chris@125: #endif
Chris@0: 
Chris@25:     QPoint illuminatePos;
Chris@44:     bool illuminate = v->shouldIlluminateLocalFeatures(this, illuminatePos);
Chris@54:     char labelbuf[10];
Chris@25: 
Chris@0:     for (int sx = sx0 - 1; sx <= sx1; ++sx) {
Chris@0: 
Chris@130: 	int fx = sx * int(modelResolution);
Chris@0: 
Chris@130: 	if (fx + modelResolution < int(modelStart) ||
Chris@0: 	    fx > int(modelEnd)) continue;
Chris@0: 
Chris@159: 	int rx0 = v->getXForFrame((fx + int(modelStart)) * srRatio);
Chris@159: 	int rx1 = v->getXForFrame((fx + int(modelStart) + int(modelResolution) + 1) * srRatio);
Chris@54: 
Chris@159: 	int rw = rx1 - rx0;
Chris@159: 	if (rw < 1) rw = 1;
Chris@54: 
Chris@159: 	bool showLabel = (rw > 10 &&
Chris@159: 			  paint.fontMetrics().width("0.000000") < rw - 3 &&
Chris@54: 			  paint.fontMetrics().height() < (h / sh));
Chris@98:         
Chris@0: 	for (int sy = 0; sy < sh; ++sy) {
Chris@0: 
Chris@0: 	    int ry0 = h - (sy * h) / sh - 1;
Chris@0: 	    QRgb pixel = qRgb(255, 255, 255);
Chris@0: 	    if (sx >= 0 && sx < m_cache->width() &&
Chris@0: 		sy >= 0 && sy < m_cache->height()) {
Chris@0: 		pixel = m_cache->pixel(sx, sy);
Chris@0: 	    }
Chris@0: 
Chris@159: 	    QRect r(rx0, ry0 - h / sh - 1, rw, h / sh + 1);
Chris@159: 
Chris@159:             if (rw == 1) {
Chris@159:                 paint.setPen(pixel);
Chris@159:                 paint.setBrush(Qt::NoBrush);
Chris@159:                 paint.drawLine(r.x(), r.y(), r.x(), r.y() + r.height() - 1);
Chris@159:                 continue;
Chris@159:             }
Chris@159: 
Chris@0: 	    QColor pen(255, 255, 255, 80);
Chris@0: 	    QColor brush(pixel);
Chris@159: 
Chris@159:             if (rw > 3 && r.height() > 3) {
Chris@159:                 brush.setAlpha(160);
Chris@159:             }
Chris@159: 
Chris@0: 	    paint.setPen(Qt::NoPen);
Chris@0: 	    paint.setBrush(brush);
Chris@0: 
Chris@25: 	    if (illuminate) {
Chris@25: 		if (r.contains(illuminatePos)) {
Chris@25: 		    paint.setPen(Qt::black);//!!!
Chris@25: 		}
Chris@25: 	    }
Chris@76:             
Chris@125: #ifdef DEBUG_COLOUR_3D_PLOT_LAYER_PAINT
Chris@159:             std::cerr << "rect " << r.x() << "," << r.y() << " "
Chris@159:                       << r.width() << "x" << r.height() << std::endl;
Chris@125: #endif
Chris@25: 
Chris@25: 	    paint.drawRect(r);
Chris@0: 
Chris@54: 	    if (showLabel) {
Chris@54: 		if (sx >= 0 && sx < m_cache->width() &&
Chris@54: 		    sy >= 0 && sy < m_cache->height()) {
Chris@160: 		    float value = m_model->getValueAt(sx, sy);
Chris@54: 		    sprintf(labelbuf, "%06f", value);
Chris@54: 		    QString text(labelbuf);
Chris@54: 		    paint.setPen(Qt::white);
Chris@54: 		    paint.drawText(rx0 + 2,
Chris@54: 				   ry0 - h / sh - 1 + 2 + paint.fontMetrics().ascent(),
Chris@54: 				   text);
Chris@0: 		}
Chris@0: 	    }
Chris@0: 	}
Chris@0:     }
Chris@98: }
Chris@0: 
Chris@98: void
Chris@98: Colour3DPlotLayer::paintDense(View *v, QPainter &paint, QRect rect) const
Chris@98: {
Chris@98:     long startFrame = v->getStartFrame();
Chris@98:     int zoomLevel = v->getZoomLevel();
Chris@0: 
Chris@98:     size_t modelStart = m_model->getStartFrame();
Chris@98:     size_t modelEnd = m_model->getEndFrame();
Chris@130:     size_t modelResolution = m_model->getResolution();
Chris@0: 
Chris@159:     float srRatio =
Chris@159:         float(v->getViewManager()->getMainModelSampleRate()) /
Chris@159:         float(m_model->getSampleRate());
Chris@159: 
Chris@98:     int x0 = rect.left();
Chris@98:     int x1 = rect.right() + 1;
Chris@0: 
Chris@98:     int w = x1 - x0;
Chris@98:     int h = v->height();
Chris@160:     int sh = m_model->getHeight();
Chris@98: 
Chris@98:     QImage img(w, h, QImage::Format_RGB32);
Chris@98: 
Chris@98:     for (int x = x0; x < x1; ++x) {
Chris@98: 
Chris@159:         long xf = v->getFrameForX(x) / srRatio;
Chris@105:         if (xf < 0) {
Chris@105:             for (int y = 0; y < h; ++y) {
Chris@105:                 img.setPixel(x - x0, y, m_cache->color(0));
Chris@105:             }
Chris@105:             continue;
Chris@105:         }
Chris@105: 
Chris@130:         float sx0 = (float(xf) - modelStart) / modelResolution;
Chris@159:         float sx1 = (float(v->getFrameForX(x+1) / srRatio) - modelStart) / modelResolution;
Chris@98:             
Chris@98:         int sx0i = int(sx0 + 0.001);
Chris@98:         int sx1i = int(sx1);
Chris@98: 
Chris@98:         for (int y = 0; y < h; ++y) {
Chris@98: 
Chris@98:             float sy0 = (float(h - y - 1) * sh) / h;
Chris@98:             float sy1 = (float(h - y) * sh) / h;
Chris@98:             
Chris@98:             int sy0i = int(sy0 + 0.001);
Chris@98:             int sy1i = int(sy1);
Chris@98: 
Chris@98:             float mag = 0.0, div = 0.0;
Chris@159:             int max = 0;
Chris@98: 
Chris@98:             for (int sx = sx0i; sx <= sx1i; ++sx) {
Chris@98: 
Chris@98:                 if (sx < 0 || sx >= m_cache->width()) continue;
Chris@98: 
Chris@98:                 for (int sy = sy0i; sy <= sy1i; ++sy) {
Chris@98: 
Chris@98:                     if (sy < 0 || sy >= m_cache->height()) continue;
Chris@98: 
Chris@98:                     float prop = 1.0;
Chris@98:                     if (sx == sx0i) prop *= (sx + 1) - sx0;
Chris@98:                     if (sx == sx1i) prop *= sx1 - sx;
Chris@98:                     if (sy == sy0i) prop *= (sy + 1) - sy0;
Chris@98:                     if (sy == sy1i) prop *= sy1 - sy;
Chris@98: 
Chris@98:                     mag += prop * m_cache->pixelIndex(sx, sy);
Chris@159:                     max = std::max(max, m_cache->pixelIndex(sx, sy));
Chris@98:                     div += prop;
Chris@98:                 }
Chris@98:             }
Chris@98: 
Chris@98:             if (div != 0) mag /= div;
Chris@98:             if (mag < 0) mag = 0;
Chris@98:             if (mag > 255) mag = 255;
Chris@159:             if (max < 0) max = 0;
Chris@159:             if (max > 255) max = 255;
Chris@98: 
Chris@98:             img.setPixel(x - x0, y, m_cache->color(int(mag + 0.001)));
Chris@159: //            img.setPixel(x - x0, y, m_cache->color(max));
Chris@98:         }
Chris@0:     }
Chris@0: 
Chris@98:     paint.drawImage(x0, 0, img);
Chris@0: }
Chris@0: 
Chris@28: bool
Chris@44: Colour3DPlotLayer::snapToFeatureFrame(View *v, int &frame,
Chris@28: 				      size_t &resolution,
Chris@28: 				      SnapType snap) const
Chris@24: {
Chris@24:     if (!m_model) {
Chris@44: 	return Layer::snapToFeatureFrame(v, frame, resolution, snap);
Chris@24:     }
Chris@24: 
Chris@130:     resolution = m_model->getResolution();
Chris@28:     int left = (frame / resolution) * resolution;
Chris@28:     int right = left + resolution;
Chris@28: 
Chris@28:     switch (snap) {
Chris@28:     case SnapLeft:  frame = left;  break;
Chris@28:     case SnapRight: frame = right; break;
Chris@28:     case SnapNearest:
Chris@28:     case SnapNeighbouring:
Chris@28: 	if (frame - left > right - frame) frame = right;
Chris@28: 	else frame = left;
Chris@28: 	break;
Chris@28:     }
Chris@24:     
Chris@28:     return true;
Chris@24: }
Chris@24: 
Chris@0: #ifdef INCLUDE_MOCFILES
Chris@0: #include "Colour3DPlotLayer.moc.cpp"
Chris@0: #endif
Chris@0: 
Chris@0: