/// @overload QGLWidget
void paintGL(){
vao.bind();
program.bind();
{
///--- Update modelview
#ifdef WITH_QGLVIEWER
/// use the trackball to specify the matrices
setup_modelview(camera(), program);
#else
///--- simple unit cube orthographic view
static Eigen::Matrix4f M = Eigen::Matrix4f::Identity();
static Eigen::Matrix4f P = Eigen::ortho(-1.0f, +1.0f, -1.0f, +1.0f, -1.0f, +1.0f);
static Eigen::Matrix4f V = Eigen::Matrix4f::Identity();
static Eigen::Matrix4f MV = V*M;
static Eigen::Matrix4f MVP = P*MV;
GLint MVP_id = glGetUniformLocation(program.programId(), "MVP");
glUniformMatrix4fv(MVP_id, 1, GL_FALSE, MVP.data());
GLint MV_id = glGetUniformLocation(program.programId(), "MV");
glUniformMatrix4fv(MV_id, 1, GL_FALSE, MV.data());
#endif
///--- clear & draw
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glDrawElements(GL_TRIANGLES, triangles.size(), GL_UNSIGNED_INT, 0);
}
vao.release();
program.release();
}
/// @overload QGLWidget
void paintGL(){
program.bind();
vao.bind();
glClear(GL_COLOR_BUFFER_BIT);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); ///< we have 4 verts
vao.release();
program.release();
}
/// @overload QGLWidget
void initializeGL(){
printf("OpenGL %d.%d\n",this->format().majorVersion(),this->format().minorVersion());
///--- Create an array object to store properties
{
bool success = vao.create();
Q_ASSERT(success);
vao.bind();
}
///--- Load/compile shaders
{
bool vok = program.addShaderFromSourceCode(QGLShader::Vertex, vshader);
bool fok = program.addShaderFromSourceCode(QGLShader::Fragment, fshader);
bool lok = program.link ();
Q_ASSERT(lok && vok && fok);
bool success = program.bind();
Q_ASSERT(success);
}
///--- Create vertex buffer/attributes "position"
{
static float vertices[] = {
-1.0000,-1.0000,+0.0000,
+1.0000,-1.0000,+0.0000,
-1.0000,+1.0000,+0.0000,
+1.0000,+1.0000,+0.0000,};
vertexbuffer = QGLBuffer(QGLBuffer::VertexBuffer);
bool success = vertexbuffer.create();
Q_ASSERT(success);
vertexbuffer.setUsagePattern( QGLBuffer::StaticDraw );
success = vertexbuffer.bind();
Q_ASSERT(success);
vertexbuffer.allocate( vertices, sizeof(vertices) );
program.setAttributeBuffer("position", GL_FLOAT, 0, 3 );
program.enableAttributeArray("position");
}
///--- Unbind to avoid pollution
vao.release();
program.release();
///--- Background
glClearColor(1.0, 1.0, 1.0, 1.0);
///--- Setup opengl flags
glDisable(GL_DEPTH_TEST);
}
void Viewer_impl::showDistance(QPoint pixel)
{
static bool isAset = false;
bool found;
CGAL::qglviewer::Vec point;
point = viewer->camera()->pointUnderPixel(pixel, found);
if(!isAset && found)
{
//set APoint
APoint = point;
isAset = true;
clearDistancedisplay();
}
else if (found)
{
//set BPoint
BPoint = point;
isAset = false;
// fills the buffers
std::vector<float> v;
v.resize(6);
v[0] = float(APoint.x); v[1] = float(APoint.y); v[2] = float(APoint.z);
v[3] = float(BPoint.x); v[4] = float(BPoint.y); v[5] = float(BPoint.z);
vao.bind();
buffer.bind();
buffer.allocate(v.data(),6*sizeof(float));
rendering_program_dist.enableAttributeArray("vertex");
rendering_program_dist.setAttributeBuffer("vertex",GL_FLOAT,0,3);
buffer.release();
vao.release();
distance_is_displayed = true;
double dist = std::sqrt((BPoint.x-APoint.x)*(BPoint.x-APoint.x) + (BPoint.y-APoint.y)*(BPoint.y-APoint.y) + (BPoint.z-APoint.z)*(BPoint.z-APoint.z));
QFont font;
font.setBold(true);
TextItem *ACoord = new TextItem(float(APoint.x),
float(APoint.y),
float(APoint.z),
QString("A(%1,%2,%3)").arg(APoint.x-viewer->offset().x).arg(APoint.y-viewer->offset().y).arg(APoint.z-viewer->offset().z), true, font, Qt::red, true);
distance_text.append(ACoord);
TextItem *BCoord = new TextItem(float(BPoint.x),
float(BPoint.y),
float(BPoint.z),
QString("B(%1,%2,%3)").arg(BPoint.x-viewer->offset().x).arg(BPoint.y-viewer->offset().y).arg(BPoint.z-viewer->offset().z), true, font, Qt::red, true);
distance_text.append(BCoord);
CGAL::qglviewer::Vec centerPoint = 0.5*(BPoint+APoint);
TextItem *centerCoord = new TextItem(float(centerPoint.x),
float(centerPoint.y),
float(centerPoint.z),
QString(" distance: %1").arg(dist), true, font, Qt::red, true);
distance_text.append(centerCoord);
Q_FOREACH(TextItem* ti, distance_text)
textRenderer->addText(ti);
Q_EMIT(viewer->sendMessage(QString("First point : A(%1,%2,%3), second point : B(%4,%5,%6), distance between them : %7")
.arg(APoint.x-viewer->offset().x)
.arg(APoint.y-viewer->offset().y)
.arg(APoint.z-viewer->offset().z)
.arg(BPoint.x-viewer->offset().x)
.arg(BPoint.y-viewer->offset().y)
.arg(BPoint.z-viewer->offset().z)
.arg(dist)));
}
}
/// @overload QGLWidget
void initializeGL(){
printf("OpenGL %d.%d\n",this->format().majorVersion(),this->format().minorVersion());
///--- Background
glClearColor(1.0, 1.0, 1.0, 1.0);
///--- Viewport (simple, for unresizeable window)
glViewport(0, 0, this->width(), this->height());
///--- Setup opengl flags
glEnable(GL_DEPTH_TEST);
///--- Create the triangle index buffer
{
assert(mesh.is_triangle_mesh());
triangles.clear();
for(auto f: mesh.faces())
for(auto v: mesh.vertices(f))
triangles.push_back(v.idx());
}
///--- Create an array object to store properties
{
bool success = vao.create();
assert(success);
vao.bind();
}
///--- Load/compile shaders
{
bool vok = program.addShaderFromSourceFile(QGLShader::Vertex, ":/vshader.glsl");
bool fok = program.addShaderFromSourceFile(QGLShader::Fragment, ":/fshader.glsl");
bool lok = program.link ();
assert(lok && vok && fok);
bool success = program.bind();
assert(success);
}
///--- Create vertex buffer/attributes "position"
{
auto vpoints = mesh.get_vertex_property<Vec3>("v:point");
bool success = vertexbuffer.create();
assert(success);
vertexbuffer.setUsagePattern( QGLBuffer::StaticDraw );
success = vertexbuffer.bind();
assert(success);
vertexbuffer.allocate( vpoints.data(), sizeof(Vec3) * mesh.n_vertices() );
program.setAttributeBuffer("vpoint", GL_FLOAT, 0, 3 );
program.enableAttributeArray("vpoint");
}
///--- Create vertex buffer/attributes "normal"
{
auto vnormal = mesh.get_vertex_property<Vec3>("v:normal");
bool success = normalbuffer.create();
assert(success);
normalbuffer.setUsagePattern( QGLBuffer::StaticDraw );
success = normalbuffer.bind();
assert(success);
normalbuffer.allocate( vnormal.data(), sizeof(Vec3) * mesh.n_vertices() );
program.setAttributeBuffer("vnormal", GL_FLOAT, 0, 3 );
program.enableAttributeArray("vnormal");
}
///--- Create the index "triangle" buffer
{
bool success = indexbuffer.create();
assert(success);
indexbuffer.setUsagePattern( QGLBuffer::StaticDraw );
success = indexbuffer.bind();
assert(success);
indexbuffer.allocate(&triangles[0], triangles.size()*sizeof(unsigned int));
}
#ifdef WITH_QGLVIEWER
///--- Setup camera
{
Box3 bbox = OpenGP::bounding_box(mesh);
camera()->setType(qglviewer::Camera::ORTHOGRAPHIC);
camera()->setSceneCenter(qglviewer::tr(bbox.center()));
camera()->setSceneRadius(bbox.diagonal().norm()/2.0);
camera()->showEntireScene();
}
#endif
///--- Unbind to avoid pollution
vao.release();
program.release();
}
