/**
* @brief GlSphere::makeSurface North pole is (0,radius, 0), south pole is (0, -radius, 0)
* We use true normals. On a sphere vertex and normal have the same direction.
* @param pointContainer
*/
void GLSphere::makeSurface(QVector<GLPoint> *pointContainer, QVector<GLuint> *indexContainer)
{
GLBody::makeSurface(pointContainer, indexContainer);
QVector3D southPole = -v_Z; //unit vector, must be scaled by radius later
QVector3D northPole = v_Z;
QVector3D vertex;
QVector3D normal;
QVector3D texCoord;
QMatrix4x4 longitudeMatrix;
QMatrix4x4 latitudeMatrix;
int iSouthPole = 0; //indices for the poles
int iNorthPole = 0;
//start with south pole
m_firstPoint = m_points->size();
m_firstIndex = m_indices->size();
iSouthPole = m_firstPoint;
m_points->append(GLPoint(southPole * m_radius, //vertex
southPole, //normal
QVector3D(0.5, 0.0, 0.0),//texCoord at 0 longitude
m_color));
int firstRow = 1;
int lastRow = m_stacks - 1;
int slice;
int duplicates = 1;
for(slice = 0; slice < m_slices; slice ++)
{
longitudeMatrix.setToIdentity();//always start from scratch
longitudeMatrix.rotate(slice * 360.0 / m_slices, -v_Z);
if(slice == m_slices / 2) //we need to switch from end of texture to start of texture here
duplicates = 2;
else duplicates = 1;
for(int duplicate = 0; duplicate < duplicates; duplicate++) // create an extra column of points
for(int stack = firstRow; stack <= lastRow; stack ++) // to switch from end of texture to start of texture
{
latitudeMatrix.setToIdentity(); //always start from scratch
latitudeMatrix.rotate(stack * 180.0 / m_stacks, v_Y);
vertex = (southPole * latitudeMatrix) * longitudeMatrix;
normal = vertex;
vertex *= m_radius;
double texX = (double)slice / (double) m_slices + 0.5;
if(texX > 1.01)
texX -= 1.0;
if(duplicate == 1)
texX = 0.0;
texCoord = QVector3D(texX, (double)stack / (double)m_stacks, 0.0); //floats required!!
m_points->append(GLPoint(vertex, normal, texCoord, m_color));
}
}
//end with north pole
iNorthPole = m_points->size();
m_points->append(GLPoint(northPole * m_radius, //vertex
northPole, //normal
QVector3D(0.5, 1.0, 0.0),//texCoord at 0 longitude
m_color));
m_nextPoint = m_points->size();
for(int i = m_firstPoint; i < m_nextPoint; i++) //move to final position
(*m_points)[i].move(m_center);
int rows = m_stacks - 1;
for(slice = 0; slice < m_slices; slice += 2)
{
//go upwards from south pole to north pole
m_indices->append(iSouthPole);
for(int stack = firstRow; stack <= lastRow; stack ++)
{
m_indices->append(iSouthPole + rows * slice + stack); //left meridian
m_indices->append(iSouthPole + rows * slice + rows + stack ); //right meridian
}
m_indices->append(iNorthPole);
//now go downwards back to southpole
for(int stack = lastRow; stack >= firstRow; stack --)
{
m_indices->append(iSouthPole + rows * slice + rows + stack); //left meridian
m_indices->append(iSouthPole + rows * slice + rows + rows + stack); //right meridian
}
//southpole will be added in next slice
}
//Close the sphere
//go upwards from south pole to north pole
m_indices->append(iSouthPole);
for(int stack = firstRow; stack <= lastRow; stack ++)
{
m_indices->append(iSouthPole + rows * slice + stack); //left meridian = last meridian
m_indices->append(iSouthPole + stack ); //right meridian = first meridian
}
m_indices->append(iNorthPole);
m_indices->append(iSouthPole); //finally add south pole
m_nextIndex = m_indices->size();
}
void GLText::draw()
{
glEnable(GL_TEXTURE_2D);
double pos=0;
color.use();
sf::Texture texture(font->getTexture(size));
sf::Vector2u texsize=texture.getSize();
sf::Texture::bind(&texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
int min_back=0;
for (unsigned int i=0; i<message.size(); ++i)
{
sf::Glyph glyph=font->getGlyph(message[i],size,false);
if (i==0)
min_back=glyph.bounds.top;
if (min_back>glyph.bounds.top)
min_back=glyph.bounds.top;
}
GLPoint poz=position;
poz.x-=origin.x;
poz.y-=origin.y;
poz.z-=origin.z;
for (unsigned int i=0; i<message.size(); ++i)
{
sf::Glyph glyph=font->getGlyph(message[i],size,false);
if (message[i]==' ')
glyph.bounds.width=size/4;
glBegin(GL_POLYGON);
glTexCoord2d(glyph.textureRect.left/double(texsize.x),glyph.textureRect.top/double(texsize.y));
GLPoint help(pos,glyph.bounds.top-min_back,0);
rotate3d(help,rotation.x,rotation.y,rotation.z);
help.x*=scale.x;
help.y*=scale.y;
help.z*=scale.z;
help.x+=poz.x;
help.y+=poz.y;
help.z+=poz.z;
help.use();
glTexCoord2d((glyph.textureRect.left+glyph.textureRect.width)/double(texsize.x),glyph.textureRect.top/double(texsize.y));
help=GLPoint(pos+glyph.bounds.width,glyph.bounds.top-min_back);
rotate3d(help,rotation.x,rotation.y,rotation.z);
help.x*=scale.x;
help.y*=scale.y;
help.z*=scale.z;
help.x+=poz.x;
help.y+=poz.y;
help.z+=poz.z;
help.use();
glTexCoord2d((glyph.textureRect.left+glyph.textureRect.width)/double(texsize.x),(glyph.textureRect.top+glyph.textureRect.height)/double(texsize.y));
help=GLPoint(pos+glyph.bounds.width,glyph.bounds.top-min_back+glyph.bounds.height);
rotate3d(help,rotation.x,rotation.y,rotation.z);
help.x*=scale.x;
help.y*=scale.y;
help.z*=scale.z;
help.x+=poz.x;
help.y+=poz.y;
help.z+=poz.z;
help.use();
glTexCoord2d(glyph.textureRect.left/double(texsize.x),(glyph.textureRect.top+glyph.textureRect.height)/double(texsize.y));
help=GLPoint(pos,glyph.bounds.top+glyph.bounds.height-min_back);
rotate3d(help,rotation.x,rotation.y,rotation.z);
help.x*=scale.x;
help.y*=scale.y;
help.z*=scale.z;
help.x+=poz.x;
help.y+=poz.y;
help.z+=poz.z;
help.use();
glEnd();
pos+=glyph.bounds.width;
}
sf::Texture::bind(NULL);
glDisable(GL_TEXTURE_2D);
}
GLScene::ObjectData::ObjectData()
{
scale=GLPoint(1);
}
GLText::GLText()
{
font=NULL;
size=1;
scale=GLPoint(1);
}
