void Scene3D::drawGeometry(void) const
{
if(origin)
drawOrigin();
for(int i = 0; i < objects.size(); ++i)
objects[i]->draw();
}
void line_test()
{
alpha=0;
beta=0;
float phase_shift=0.0f;
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0, 0.0, -2.0);
// rotate by beta degrees around the x-axis
glRotatef(beta, 1.0, 0.0, 0.0);
// rotate by alpha degrees around the z-axis
glRotatef(alpha, 0.0, 0.0, 1.0);
drawOrigin();
//gaussianDemo(sigma);
phase_shift+=0.01f;
linePlot(phase_shift);
glfwSwapBuffers(window);
glfwPollEvents();
}
}
void draw()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); //Efface le frame buffer et le Z-buffer
glMatrixMode(GL_MODELVIEW); //Choisit la matrice MODELVIEW
glLoadIdentity(); //Réinitialise la matrice
lookAt(character->getPos(),character->getDir(),character->getUp());
drawRoom();
drawOrigin();
drawScreenSurface();
drawMouse();
glutSwapBuffers();
glutPostRedisplay();
}
void QuaternionDemo::render()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
// (AB)-1 === B-1 A-1
glm::mat4 inverseViewMatrix = glm::translate(glm::mat4(1.0f), -viewTrans) *
viewRot.inverse().toRotMatrix();
glm::mat4 projectionMatrix = glm::perspective(70.0f, 1024.0f/768.0f, 0.1f, 100.0f);
glm::mat4 mvp = projectionMatrix * inverseViewMatrix;
simpleShader.Use();
glUniformMatrix4fv(simpleShader["mvp"], 1, GL_FALSE, glm::value_ptr(mvp));
drawVectors();
drawOrigin();
simpleShader.UnUse();
SDL_GL_SwapWindow(mainWindow);
}
GridElement::GridElement( const hydroqguielementutil::GuiElementInfo &guiElementInfo,
double wireGridSpacing,
double groundPlaneSquareSpacing )
: GuiElement3d(guiElementInfo),
wireGridSpacing_(wireGridSpacing),
groundPlaneSquareSpacing_(groundPlaneSquareSpacing)
{
root_ = new osg::Group();
drawGroundPlane();
root_->addChild( groundPlaneGeode_.get() );
drawOrigin();
root_->addChild( originGeode_.get() );
viewOffset_ = new osg::PositionAttitudeTransform();
root_->addChild( viewOffset_.get() );
drawWireGrid();
viewOffset_->addChild( wireGridGeode_.get() );
// drawLabels();
}
void gaussianDemo(){
//construct a 1000x1000 grid
float sigma = 0.1f;
float sign = 1.0f;
float step_size = 0.005f;
const int grid_x = 400;
const int grid_y = 400;
const int num_points = grid_x*grid_y;
Data *data=(Data*)malloc(sizeof(Data)*num_points);
int data_counter=0;
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0, 0.0, -2.0);
// rotate by beta degrees around the x-axis
glRotatef(beta, 1.0, 0.0, 0.0);
// rotate by alpha degrees around the z-axis
glRotatef(alpha, 0.0, 0.0, 1.0);
drawOrigin();
sigma=sigma+sign*step_size;
//standard deviation
float sigma2=sigma*sigma;
//amplitude
float sigma_const = 10.0f*(sigma2*2.0f*(float)M_PI);
if(sigma>1.0f){
sign = -1.0f;
}
if(sigma<0.1){
sign = 1.0f;
}
data_counter=0;
for(float x = -grid_x/2.0f; x<grid_x/2.0f; x+=1.0f){
for(float y = -grid_y/2.0f; y<grid_y/2.0f; y+=1.0f){
float x_data = 2.0f*x/grid_x;
float y_data = 2.0f*y/grid_y;
//compute the height z based on a
//2D Gaussian function.
float z_data = exp(-0.5f*(x_data*x_data)/(sigma2)
-0.5f*(y_data*y_data)/(sigma2))/sigma_const;
data[data_counter].x = x_data;
data[data_counter].y = y_data;
data[data_counter].z = z_data;
data_counter++;
} }
//visualize the result using a 2D heat map
draw2DHeatMap(data, num_points);
//gaussianDemo(sigma);
glfwSwapBuffers(window);
glfwPollEvents();
}
//free(data);
}
