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