paysages : Terrain canvas - Height map painting (WIP).
git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@390 b1fd45b6-86a6-48da-8261-f70d1f35bdcc
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ThunderK
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commit
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4 changed files with 233 additions and 13 deletions
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@ -1,5 +1,6 @@
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#include "dialogheightmap.h"
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#include <QLabel>
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#include <QBoxLayout>
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#include <QGridLayout>
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#include <QPushButton>
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@ -16,6 +17,7 @@ DialogHeightMap::DialogHeightMap(QWidget* parent, HeightMap* heightmap) : Dialog
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QWidget* viewer;
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QGridLayout* viewer_layout;
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QLabel* label;
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QSlider* slider;
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QPushButton* button;
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@ -43,6 +45,7 @@ DialogHeightMap::DialogHeightMap(QWidget* parent, HeightMap* heightmap) : Dialog
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panel = new QWidget(mainarea);
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panel->setLayout(new QVBoxLayout());
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mainarea->layout()->addWidget(panel);
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mainarea->layout()->setAlignment(panel, Qt::AlignTop);
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// Viewer layout (3d display + sliders)
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_3dview = new WidgetHeightMap(viewer, &_value_modified);
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@ -57,10 +60,28 @@ DialogHeightMap::DialogHeightMap(QWidget* parent, HeightMap* heightmap) : Dialog
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viewer_layout->addWidget(slider, 0, 1);
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// Panel layout
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button = new QPushButton(tr("Reset to terrain height"), buttons);
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button = new QPushButton(tr("Reset to terrain height"), panel);
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connect(button, SIGNAL(clicked()), _3dview, SLOT(resetToTerrain()));
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panel->layout()->addWidget(button);
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label = new QLabel(tr("Brush size"), panel);
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panel->layout()->addWidget(label);
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slider = new QSlider(Qt::Horizontal, panel);
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slider->setRange(6, 150);
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connect(slider, SIGNAL(valueChanged(int)), this, SLOT(brushSizeChanged(int)));
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panel->layout()->addWidget(slider);
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slider->setValue(30);
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label = new QLabel(tr("Brush smoothing"), panel);
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panel->layout()->addWidget(label);
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slider = new QSlider(Qt::Horizontal, panel);
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slider->setRange(0, 1000);
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connect(slider, SIGNAL(valueChanged(int)), this, SLOT(brushSmoothingChanged(int)));
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panel->layout()->addWidget(slider);
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slider->setValue(200);
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// Buttons layout
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button = new QPushButton(tr("Validate"), buttons);
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buttons->layout()->addWidget(button);
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@ -107,3 +128,13 @@ void DialogHeightMap::angleVChanged(int value)
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{
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_3dview->setVerticalViewAngle(M_PI_2 * ((double)value) / 1000.0);
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}
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void DialogHeightMap::brushSizeChanged(int value)
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{
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_3dview->setBrushSize((double)value / 10.0);
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}
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void DialogHeightMap::brushSmoothingChanged(int value)
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{
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_3dview->setBrushSmoothing((double)value / 1000.0);
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}
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@ -19,6 +19,8 @@ public slots:
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private slots:
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void angleHChanged(int value);
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void angleVChanged(int value);
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void brushSizeChanged(int value);
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void brushSmoothingChanged(int value);
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private:
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HeightMap* _value_original;
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@ -1,6 +1,7 @@
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#include "widgetheightmap.h"
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#include <QTime>
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#include <QMouseEvent>
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#include <math.h>
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#include <GL/glu.h>
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#include "tools.h"
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@ -12,8 +13,12 @@ WidgetHeightMap::WidgetHeightMap(QWidget *parent, HeightMap* heightmap):
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{
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setMinimumSize(500, 500);
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setFocusPolicy(Qt::StrongFocus);
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setMouseTracking(true);
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_heightmap = heightmap;
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_vertexes = new _VertexInfo[heightmap->resolution_x * heightmap->resolution_z];
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_dirty = true;
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_average_frame_time = 0.0;
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@ -22,10 +27,16 @@ WidgetHeightMap::WidgetHeightMap(QWidget *parent, HeightMap* heightmap):
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_angle_h = 0.0;
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_angle_v = 0.3;
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_brush_x = 0.0;
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_brush_z = 0.0;
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_brush_size = 10.0;
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_brush_smoothing = 0.5;
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}
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WidgetHeightMap::~WidgetHeightMap()
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{
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delete[] _vertexes;
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}
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void WidgetHeightMap::setHorizontalViewAngle(double angle_h)
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@ -40,6 +51,22 @@ void WidgetHeightMap::setVerticalViewAngle(double angle_v)
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updateGL();
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}
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void WidgetHeightMap::setBrushSize(double size)
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{
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_brush_size = size;
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_brush_x = 0.0;
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_brush_z = 0.0;
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updateGL();
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}
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void WidgetHeightMap::setBrushSmoothing(double smoothing)
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{
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_brush_smoothing = smoothing;
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_brush_x = 0.0;
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_brush_z = 0.0;
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updateGL();
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}
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void WidgetHeightMap::resetToTerrain()
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{
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TerrainDefinition terrain;
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@ -59,6 +86,7 @@ void WidgetHeightMap::resetToTerrain()
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}
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terrainDeleteDefinition(&terrain);
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_dirty = true;
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updateGL();
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}
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@ -72,6 +100,44 @@ void WidgetHeightMap::mousePressEvent(QMouseEvent* event)
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void WidgetHeightMap::mouseMoveEvent(QMouseEvent* event)
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{
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int move_x = event->x() - _last_mouse_x;
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int move_y = event->y() - _last_mouse_y;
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if (event->buttons() & Qt::MiddleButton)
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{
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// Rotate around the turntable
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_angle_h -= (double)move_x * 0.008;
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_angle_v += (double)move_y * 0.003;
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updateGL();
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}
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else
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{
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// OpenGL picking using z-buffer
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GLint viewport[4];
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GLdouble modelview[16];
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GLdouble projection[16];
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GLfloat winX, winY, winZ;
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Vector3 point;
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glGetDoublev(GL_MODELVIEW_MATRIX, modelview);
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glGetDoublev(GL_PROJECTION_MATRIX, projection);
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glGetIntegerv(GL_VIEWPORT, viewport);
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winX = (float)event->x();
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winY = (float)height() - (float)event->y();
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glReadPixels(event->x(), (int)winY, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &winZ);
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gluUnProject(winX, winY, winZ, modelview, projection, viewport, &point.x, &point.y, &point.z);
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_brush_x = point.x;
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_brush_z = point.z;
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updateGL();
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}
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_last_mouse_x = event->x();
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_last_mouse_y = event->y();
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}
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void WidgetHeightMap::wheelEvent(QWheelEvent* event)
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@ -82,19 +148,28 @@ void WidgetHeightMap::initializeGL()
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{
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glDisable(GL_LIGHTING);
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GLfloat light_position[] = { 40.0, 40.0, 40.0, 0.0 };
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GLfloat light_diffuse[] = { 1.0, 1.0, 1.0, 1.0 };
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GLfloat light_specular[] = { 0.0, 0.0, 0.0, 0.0 };
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glShadeModel(GL_SMOOTH);
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glLightfv(GL_LIGHT0, GL_POSITION, light_position);
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glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
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glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_COLOR_MATERIAL);
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glFrontFace(GL_CCW);
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glCullFace(GL_BACK);
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glEnable(GL_CULL_FACE);
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//glFrontFace(GL_CCW);
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//glCullFace(GL_BACK);
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glDisable(GL_CULL_FACE);
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glDepthFunc(GL_LESS);
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glDepthMask(true);
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glEnable(GL_DEPTH_TEST);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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glEnable(GL_LINE_SMOOTH);
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glLineWidth(1.0);
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//glEnable(GL_LINE_SMOOTH);
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//glLineWidth(1.0);
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glDisable(GL_FOG);
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@ -121,6 +196,13 @@ void WidgetHeightMap::paintGL()
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start_time = QTime::currentTime();
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// Update vertex cache
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if (_dirty)
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{
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updateVertexInfo();
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_dirty = false;
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}
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// Place camera
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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@ -129,18 +211,57 @@ void WidgetHeightMap::paintGL()
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// Background
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glBegin(GL_POINTS);
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glColor3d(1.0, 0.0, 0.0);
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// Height map
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rx = _heightmap->resolution_x;
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rz = _heightmap->resolution_z;
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for (int x = 0; x < rx; x++)
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for (int x = 0; x < rx - 1; x++)
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{
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glBegin(GL_QUAD_STRIP);
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for (int z = 0; z < rz; z++)
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{
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glVertex3d(80.0 * (double)x / (double)(rx - 1) - 40.0, _heightmap->data[z * rx + x], 80.0 * (double)z / (double)(rz - 1) - 40.0);
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_VertexInfo* vertex = _vertexes + z * rx + x;
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double diff_x, diff_z, diff;
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diff_x = (vertex + 1)->point.x - _brush_x;
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diff_z = (vertex + 1)->point.z - _brush_z;
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diff = sqrt(diff_x * diff_x + diff_z * diff_z);
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if (diff > _brush_size)
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{
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diff = 0.0;
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}
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else if (diff > _brush_size * (1.0 - _brush_smoothing))
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{
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diff = 1.0 - (diff - _brush_size * (1.0 - _brush_smoothing)) / (_brush_size * _brush_smoothing);
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}
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else
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{
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diff = 1.0;
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}
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glColor3d(1.0, 1.0 - diff, 1.0 - diff);
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glNormal3d((vertex + 1)->normal.x, (vertex + 1)->normal.y, (vertex + 1)->normal.z);
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glVertex3d((vertex + 1)->point.x, (vertex + 1)->point.y, (vertex + 1)->point.z);
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diff_x = vertex->point.x - _brush_x;
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diff_z = vertex->point.z - _brush_z;
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diff = sqrt(diff_x * diff_x + diff_z * diff_z);
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if (diff > _brush_size)
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{
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diff = 0.0;
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}
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else if (diff > _brush_size * (1.0 - _brush_smoothing))
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{
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diff = 1.0 - (diff - _brush_size * (1.0 - _brush_smoothing)) / (_brush_size * _brush_smoothing);
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}
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else
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{
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diff = 1.0;
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}
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glColor3d(1.0, 1.0 - diff, 1.0 - diff);
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glNormal3d(vertex->normal.x, vertex->normal.y, vertex->normal.z);
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glVertex3d(vertex->point.x, vertex->point.y, vertex->point.z);
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}
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glEnd();
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}
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glEnd();
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// Time stats
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frame_time = 0.001 * (double)start_time.msecsTo(QTime::currentTime());
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@ -152,3 +273,49 @@ void WidgetHeightMap::paintGL()
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logDebug(QString("[OpenGL] ERROR : ") + (const char*)gluErrorString(error_code));
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}
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}
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void WidgetHeightMap::updateVertexInfo()
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{
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int rx = _heightmap->resolution_x;
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int rz = _heightmap->resolution_z;
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// Update positions
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for (int x = 0; x < rx; x++)
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{
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for (int z = 0; z < rz; z++)
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{
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_VertexInfo* vertex = _vertexes + z * rx + x;
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vertex->point.x = 80.0 * (double)x / (double)(rx - 1) - 40.0;
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vertex->point.y = _heightmap->data[z * rx + x];
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vertex->point.z = 80.0 * (double)z / (double)(rz - 1) - 40.0;
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}
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}
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// Update normals
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for (int x = 0; x < rx; x++)
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{
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for (int z = 0; z < rz; z++)
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{
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_VertexInfo* vertex = _vertexes + z * rx + x;
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if (x == rx - 1)
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{
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vertex->normal = (vertex - 1)->normal;
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}
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else if (z == rz - 1)
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{
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vertex->normal = (vertex - rx)->normal;
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}
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else
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{
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Vector3 dx, dz;
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dx = v3Sub((vertex + 1)->point, vertex->point);
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dz = v3Sub((vertex + rx)->point, vertex->point);
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vertex->normal = v3Cross(v3Normalize(dz), v3Normalize(dx));
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}
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}
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}
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}
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@ -2,8 +2,15 @@
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#define _PAYSAGES_QT_WIDGETHEIGHTMAP_H_
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#include <QGLWidget>
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#include "../lib_paysages/euclid.h"
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#include "../lib_paysages/heightmap.h"
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typedef struct
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{
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Vector3 point;
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Vector3 normal;
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} _VertexInfo;
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class WidgetHeightMap : public QGLWidget
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{
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Q_OBJECT
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@ -13,6 +20,8 @@ public:
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void setHorizontalViewAngle(double angle_h);
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void setVerticalViewAngle(double angle_v);
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void setBrushSize(double size);
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void setBrushSmoothing(double smoothing);
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public slots:
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void resetToTerrain();
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@ -27,8 +36,14 @@ protected:
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void resizeGL(int w, int h);
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void paintGL();
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private:
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void updateVertexInfo();
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private:
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HeightMap* _heightmap;
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_VertexInfo* _vertexes;
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bool _dirty;
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double _average_frame_time;
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@ -37,6 +52,11 @@ private:
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double _angle_h;
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double _angle_v;
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double _brush_x;
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double _brush_z;
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double _brush_size;
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double _brush_smoothing;
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};
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#endif
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