paysages: Started 3d explorer with OpenGL (WIP).

git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@241 b1fd45b6-86a6-48da-8261-f70d1f35bdcc

gui_qt/dialogwanderer.cpp

@@ -1,16 +1,19 @@
 #include "dialogwanderer.h"
 
-#include <QGLWidget>
 #include <QVBoxLayout>
+#include "widgetwanderer.h"
 
-DialogWanderer::DialogWanderer(QWidget *parent):
+DialogWanderer::DialogWanderer(QWidget* parent, CameraDefinition* camera):
     QDialog(parent)
 {
     setModal(true);
     setWindowTitle("Paysages 3D - Explore");
     setLayout(new QVBoxLayout());
+
+    layout()->addWidget(new WidgetWanderer(this, camera));
 }
 
 DialogWanderer::~DialogWanderer()
 {
 }
+

gui_qt/dialogwanderer.h

@@ -2,12 +2,13 @@
 #define _PAYSAGES_QT_DIALOGWANDERER_H_
 
 #include <QDialog>
+#include "../lib_paysages/camera.h"
 
 class DialogWanderer : public QDialog
 {
     Q_OBJECT
 public:
-    explicit DialogWanderer(QWidget *parent);
+    explicit DialogWanderer(QWidget *parent, CameraDefinition* camera);
     ~DialogWanderer();
 };
 

gui_qt/mainwindow.cpp

@@ -19,6 +19,7 @@
 #include "dialogwanderer.h"
 
 #include "../lib_paysages/auto.h"
+#include "../lib_paysages/scenery.h"
 #include "../lib_paysages/shared/functions.h"
 
 int main(int argc, char** argv)
@@ -133,7 +134,11 @@ void MainWindow::quickPreview()
 
 void MainWindow::explore3D()
 {
-    DialogWanderer* dialog = new DialogWanderer(this);
+    CameraDefinition camera;
+
+    sceneryGetCamera(&camera);
+
+    DialogWanderer* dialog = new DialogWanderer(this, &camera);
     dialog->exec();
 
     delete dialog;

gui_qt/mainwindow.h

@@ -3,10 +3,6 @@
 
 #include <QMainWindow>
 
-namespace Ui {
-    class MainWindow;
-}
-
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
@@ -25,4 +21,4 @@ public slots:
     void explore3D();
 };
 
-#endif // _PAYSAGES_QT_MAINWINDOW_H_
+#endif

gui_qt/paysages-qt.pro

@@ -36,7 +36,8 @@ HEADERS += ../lib_paysages/shared/functions.h ../lib_paysages/shared/types.h \
     inputnoise.h \
     mainwindow.h \
     preview.h \
-    tools.h
+    tools.h \
+    widgetwanderer.h
 FORMS +=
 SOURCES += \
     baseform.cpp \
@@ -58,4 +59,5 @@ SOURCES += \
     inputint.cpp \
     inputnoise.cpp \
     mainwindow.cpp \
-    preview.cpp
+    preview.cpp \
+    widgetwanderer.cpp

gui_qt/widgetwanderer.cpp

@@ -0,0 +1,94 @@
+#include "widgetwanderer.h"
+
+#include <QGLWidget>
+#include "../lib_paysages/scenery.h"
+
+WidgetWanderer::WidgetWanderer(QWidget *parent, CameraDefinition* camera):
+    QGLWidget(parent)
+{
+    setMinimumSize(400, 300);
+
+    this->camera = camera;
+
+    this->terrain = terrainCreateDefinition();
+    sceneryGetTerrain(&terrain);
+
+    this->water = waterCreateDefinition();
+    sceneryGetWater(&water);
+}
+
+void WidgetWanderer::initializeGL()
+{
+    glClearColor(0.4, 0.7, 0.8, 0.0);
+}
+
+void WidgetWanderer::resizeGL(int w, int h)
+{
+    double ratio = (double)h / (double)w;
+
+    glViewport(0, 0, (GLint)w, (GLint)h);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glFrustum(-2.5, 2.5, -2.5 * ratio, 2.5 * ratio, 2.0, 1000.0);
+}
+
+static inline void _pushTerrainVertex(TerrainDefinition* terrain, double x, double z)
+{
+    glVertex3f(x, terrainGetHeight(terrain, x, z), z);
+    //glVertex3f(x, 1.0, z);
+}
+
+void WidgetWanderer::paintGL()
+{
+    double x, z, step;
+
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    gluLookAt(camera->location.x, camera->location.y, camera->location.z, camera->target.x, camera->target.y, camera->target.z, camera->up.x, camera->up.y, camera->up.z);
+
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    glFrontFace(GL_CCW);
+    glCullFace(GL_BACK);
+    glEnable(GL_CULL_FACE);
+
+    glDepthFunc(GL_LEQUAL);
+    glEnable(GL_DEPTH_TEST);
+
+    glLineWidth(1.0);
+
+    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+    glColor3f(0.0, 0.0, 1.0);
+    glBegin(GL_QUADS);
+    glVertex3f(-500.0, water.height, -500.0);
+    glVertex3f(-500.0, water.height, 500.0);
+    glVertex3f(500.0, water.height, 500.0);
+    glVertex3f(500.0, water.height, -500.0);
+    glEnd();
+
+    step = 2.0;
+    for (x = -50.0; x < 50.0; x += step)
+    {
+        for (z = -50.0; z < 50.0; z += step)
+        {
+            glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+            glColor3f(0.0, 1.0, 0.0);
+            glBegin(GL_QUADS);
+            _pushTerrainVertex(&terrain, x, z);
+            _pushTerrainVertex(&terrain, x, z + step);
+            _pushTerrainVertex(&terrain, x + step, z + step);
+            _pushTerrainVertex(&terrain, x + step, z);
+            glEnd();
+
+            glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+            glColor3f(0.0, 0.5, 0.0);
+            glBegin(GL_QUADS);
+            _pushTerrainVertex(&terrain, x, z);
+            _pushTerrainVertex(&terrain, x, z + step);
+            _pushTerrainVertex(&terrain, x + step, z + step);
+            _pushTerrainVertex(&terrain, x + step, z);
+            glEnd();
+        }
+    }
+}

gui_qt/widgetwanderer.h

@@ -0,0 +1,26 @@
+#ifndef _PAYSAGES_QT_WIDGETWANDERER_H_
+#define _PAYSAGES_QT_WIDGETWANDERER_H_
+
+#include <QGLWidget>
+#include "../lib_paysages/camera.h"
+#include "../lib_paysages/terrain.h"
+#include "../lib_paysages/water.h"
+
+class WidgetWanderer : public QGLWidget
+{
+    Q_OBJECT
+public:
+    WidgetWanderer(QWidget* parent, CameraDefinition* camera);
+
+protected:
+    void initializeGL();
+    void resizeGL(int w, int h);
+    void paintGL();
+
+private:
+    CameraDefinition* camera;
+    TerrainDefinition terrain;
+    WaterDefinition water;
+};
+
+#endif