void add_to(view<T> out) const
{
if (out.size() != in_.size())
throw size_mismatch();
for (size_t i = 0; i != in_.size(); ++i)
out.data()[i] += in_[i];
}
void add_to(view<T> out) const
{
if (out.size() != (size_t)in_.rows())
throw size_mismatch();
typename eigen<T>::col_map out_map(out.data(), out.size());
out_map += in_;
}
void draw(cairo_t* cr = NULL)
{
cairo_t* target = cr;
if (subject->buffered || !cr) {
if (!buffer) {
buffer = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, subject->size.x, subject->size.y);
}
} else {
if (buffer) {
cairo_surface_destroy(buffer);
buffer = NULL;
}
}
if (buffer) {
target = cairo_create(buffer);
}
if (cr) {
cairo_save(cr);
cairo_translate(cr, subject->position.x, subject->position.y);
}
subject->draw(target, this);
if (buffer) {
cairo_destroy(target);
}
if (cr && target != cr) {
cairo_set_source_surface(cr, buffer, 0, 0);
cairo_paint(cr);
}
if (cr) {
cairo_restore(cr);
}
}
void
cone::gl_render(view& scene)
{
if (degenerate())
return;
init_model(scene);
clear_gl_error();
// See sphere::gl_render() for a description of the level of detail calc.
double coverage = scene.pixel_coverage( pos, radius);
int lod = 0;
if (coverage < 0)
lod = 5;
else if (coverage < 10)
lod = 0;
else if (coverage < 30)
lod = 1;
else if (coverage < 90)
lod = 2;
else if (coverage < 250)
lod = 3;
else if (coverage < 450)
lod = 4;
else
lod = 5;
lod += scene.lod_adjust;
if (lod < 0)
lod = 0;
else if (lod > 5)
lod = 5;
gl_matrix_stackguard guard;
const double length = axis.mag();
model_world_transform( scene.gcf, vector( length, radius, radius ) ).gl_mult();
color.gl_set(opacity);
if (translucent()) {
gl_enable cull_face( GL_CULL_FACE);
// Render the back half.
glCullFace( GL_FRONT);
scene.cone_model[lod].gl_render();
// Render the front half.
glCullFace( GL_BACK);
scene.cone_model[lod].gl_render();
}
else {
scene.cone_model[lod].gl_render();
}
check_gl_error();
}
void
sphere::gl_render( view& geometry)
{
if (degenerate())
return;
//init_model();
init_model(geometry);
// coverage is the radius of this sphere in pixels:
double coverage = geometry.pixel_coverage( pos, radius);
int lod = 0;
if (coverage < 0) // Behind the camera, but still visible.
lod = 4;
else if (coverage < 30)
lod = 0;
else if (coverage < 100)
lod = 1;
else if (coverage < 500)
lod = 2;
else if (coverage < 5000)
lod = 3;
else
lod = 4;
lod += geometry.lod_adjust; // allow user to reduce level of detail
if (lod > 5)
lod = 5;
else if (lod < 0)
lod = 0;
gl_matrix_stackguard guard;
model_world_transform( geometry.gcf, get_scale() ).gl_mult();
color.gl_set(opacity);
if (translucent()) {
// Spheres are convex, so we don't need to sort
gl_enable cull_face( GL_CULL_FACE);
// Render the back half (inside)
glCullFace( GL_FRONT );
geometry.sphere_model[lod].gl_render();
// Render the front half (outside)
glCullFace( GL_BACK );
geometry.sphere_model[lod].gl_render();
}
else {
// Render a simple sphere.
geometry.sphere_model[lod].gl_render();
}
}
int32_t write(uint32_t start_index, uint32_t length, freepie_io_6dof_data *data_to_write)
{
auto error = check_conditions_and_init_memory(start_index, length);
if(error < 0)
return error;
auto mapped_data = mapping.map();
for(auto i = start_index; i < length + start_index; i++)
{
mapped_data[i].data_id++;
mapped_data[i].data = data_to_write[i - start_index];
}
return 0;
}
int32_t read(uint32_t start_index, uint32_t length, freepie_io_6dof_data *output)
{
auto error = check_conditions_and_init_memory(start_index, length);
if(error < 0)
return error;
auto mapped_data = mapping.map();
int32_t new_values = 0;
for(auto i = start_index; i < length + start_index; i++)
{
if(make_equal(data_ids[i], mapped_data[i].data_id))
continue;
output[i - start_index] = mapped_data[i].data;
new_values |= (1 << (i - start_index));
}
return new_values;
}
void add_to(view<T> out) const
{
if (out.size() != 1)
throw size_mismatch();
out.data()[0] += in_;
}
bool operator==(view lhs, view rhs) {
return (lhs.length() == rhs.length()) &&
(std::memcmp(lhs.data(), rhs.data(), lhs.length()) == 0);
}
namespace freepie_io {
struct shared_data
{
int32_t data_id;
freepie_io_6dof_data data;
};
const size_t MaxGenericSlots = 4;
typedef shared_data shared_data_array[MaxGenericSlots];
shared_memory<shared_data_array> memory;
view<shared_data_array> mapping;
std::map<uint32_t, int32_t> data_ids;
void init_shared_memory()
{
if(!memory)
memory = shared_memory<shared_data_array>("FPGeneric");
if(memory && !mapping)
mapping = memory.open_view();
}
int32_t check_conditions_and_init_memory(uint32_t start_index, uint32_t length)
{
if(start_index + length > MaxGenericSlots)
return FREEPIE_IO_ERROR_OUT_OF_BOUNDS;
init_shared_memory();
if(!memory || !mapping)
return FREEPIE_IO_ERROR_SHARED_DATA;
return 0;
}
int32_t write(uint32_t start_index, uint32_t length, freepie_io_6dof_data *data_to_write)
{
auto error = check_conditions_and_init_memory(start_index, length);
if(error < 0)
return error;
auto mapped_data = mapping.map();
for(auto i = start_index; i < length + start_index; i++)
{
mapped_data[i].data_id++;
mapped_data[i].data = data_to_write[i - start_index];
}
return 0;
}
template<typename T>
bool make_equal(T &first, T &second)
{
if(first == second)
return true;
first = second;
return false;
}
int32_t read(uint32_t start_index, uint32_t length, freepie_io_6dof_data *output)
{
auto error = check_conditions_and_init_memory(start_index, length);
if(error < 0)
return error;
auto mapped_data = mapping.map();
int32_t new_values = 0;
for(auto i = start_index; i < length + start_index; i++)
{
if(make_equal(data_ids[i], mapped_data[i].data_id))
continue;
output[i - start_index] = mapped_data[i].data;
new_values |= (1 << (i - start_index));
}
return new_values;
}
}
