paysages3d/gui_qt/inputheightmap.cpp

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#include "inputheightmap.h"
#include <QPushButton>
#include <QPainter>
#include "dialogheightmap.h"
class SmallPreviewHeightMap:public QWidget
{
public:
SmallPreviewHeightMap(QWidget* parent, HeightMap* value) : QWidget(parent)
{
_value = value;
}
void paintEvent(QPaintEvent* event)
{
double min, max, value, fx, fy;
int ivalue;
QPainter painter(this);
heightmapGetLimits(_value, &min, &max);
if (max - min < 0.000001)
{
painter.fillRect(rect(), Qt::black);
return;
}
fx = 1.0 / (double)(width() - 1);
fy = 1.0 / (double)(height() - 1);
for (int x = 0; x < width(); x++)
{
for (int y = 0; y < height(); y++)
{
value = heightmapGetRawValue(_value, fx * x, fy * y);
ivalue = (int)(255.0 * (value - min) / (max - min));
if (ivalue > 255 || ivalue < 0)
{
ivalue = 128;
}
painter.setPen(QColor(ivalue, ivalue, ivalue));
painter.drawPoint(x, y);
}
}
}
HeightMap* _value;
};
InputHeightMap::InputHeightMap(QWidget* form, QString label, HeightMap* value, TerrainCanvas* canvas) : BaseInput(form, label)
{
_value = value;
_canvas = canvas;
_preview = new SmallPreviewHeightMap(form, value);
_preview->setMinimumSize(100, 100);
_control = new QPushButton(tr("Paint"), form);
_control->setMaximumWidth(150);
connect((QPushButton*)_control, SIGNAL(clicked()), this, SLOT(editHeightMap()));
}
void InputHeightMap::updatePreview()
{
_preview->update();
BaseInput::updatePreview();
}
void InputHeightMap::applyValue()
{
BaseInput::applyValue();
}
void InputHeightMap::revert()
{
BaseInput::revert();
}
void InputHeightMap::editHeightMap()
{
if (DialogHeightMap::editHeightMap(_control, _value, _canvas))
{
applyValue();
}
}