ProjectCubemapToGeometryPass::ProjectCubemapToGeometryPass(std::string flyvr_basepath,
osg::TextureCubeMap* texture,
osg::Uniform::Callback* observer_position_cb,
DisplaySurfaceGeometry* geometry_parameters,
unsigned int tex_width,
unsigned int tex_height) :
_geometry_parameters( geometry_parameters), _tex_width(tex_width), _tex_height(tex_height), _observer_position_callback(observer_position_cb)
{
flyvr_assert( texture!=NULL );
flyvr_assert( geometry_parameters!=NULL );
set_flyvr_base_path(flyvr_basepath);
set_plugin_path(flyvr_basepath,false);
_top = new osg::Group;
_top->addDescription("ProjectCubemapToGeometryPass top node");
_in_texture_cubemap = texture;
create_output_texture();
_camera = new osg::Camera;
setup_camera();
_geometry = create_textured_geometry();
_camera->addChild( _geometry.get() );
_top->addChild( _camera );
set_shader( "ProjectCubemapToGeometryPass.vert",
"ProjectCubemapToGeometryPass.frag");
}
void StimulusCylinderGrating_centered_bw::receive_json_message(const std::string& topic_name, const std::string& json_message)
{
json_t *root;
json_error_t error;
root = json_loads(json_message.c_str(), 0, &error);
flyvr_assert(root != NULL);
if (topic_name=="grating_info") {
GratingParams new_values;
json_t *data_json;
//data_json = json_object_get(root, "grating0");
//new_values = parse_grating_info(data_json);
new_values = parse_grating_info(root);
set_grating_info(0,new_values);
//data_json = json_object_get(root, "grating1");
//new_values = parse_grating_info(data_json);
//set_grating_info(1,new_values);
} else {
throw std::runtime_error("unknown topic name");
}
json_decref(root);
}
GratingParams parse_grating_info(const json_t * const root) {
GratingParams result;
json_t *data_json;
data_json = json_object_get(root, "reset_phase_position");
flyvr_assert(data_json != NULL);
flyvr_assert(json_is_boolean(data_json));
result.reset_phase_position = json_is_true( data_json );
data_json = json_object_get(root, "phase_position");
flyvr_assert(data_json != NULL);
flyvr_assert(json_is_real(data_json));
result.phase_position = json_real_value( data_json );
data_json = json_object_get(root, "phase_velocity");
flyvr_assert(data_json != NULL);
flyvr_assert(json_is_real(data_json));
result.phase_velocity = json_real_value( data_json );
data_json = json_object_get(root, "wavelength");
flyvr_assert(data_json != NULL);
flyvr_assert(json_is_real(data_json));
result.wavelength = json_real_value( data_json );
data_json = json_object_get(root, "contrast");
flyvr_assert(data_json != NULL);
flyvr_assert(json_is_real(data_json));
result.contrast = json_real_value( data_json );
data_json = json_object_get(root, "orientation");
flyvr_assert(data_json != NULL);
flyvr_assert(json_is_real(data_json));
result.orientation = json_real_value( data_json );
return result;
}
void StimulusCylinderGrating_centered_bw::init_cyl(CylInfo& cyl) {
osg::ref_ptr<osg::TessellationHints> hints = new osg::TessellationHints;
hints->setDetailRatio(2.0f);
hints->setCreateTop(false);
hints->setCreateBottom(false);
osg::Vec3 center = osg::Vec3(0.0f,0.0f,0.0f);
float radius = 1.0f;
float height = 3.0;
cyl.cylinder = new osg::Cylinder(center,radius,height);
cyl.shape = new osg::ShapeDrawable(cyl.cylinder, hints.get());
const char* phase_position_name;
const char* wavelength_name;
const char* contrast_name;
const char* orientation_name;
for (int i=0; i<NUM_GRATINGS; i++) {
GratingParams new_values;
new_values.phase_position = 0.0;
new_values.phase_velocity = 360*D2R;
new_values.wavelength = 20*D2R;
new_values.contrast = 1.0;
new_values.orientation = 0;
if (i==0) {
phase_position_name="phase_position0";
wavelength_name="wavelength0";
contrast_name="contrast0";
orientation_name="orientation0";
} else {
flyvr_assert(false);
}
cyl.gratings[i].u_phase_position = new osg::Uniform( osg::Uniform::FLOAT, phase_position_name );
cyl.gratings[i].u_wavelength = new osg::Uniform( osg::Uniform::FLOAT, wavelength_name );
cyl.gratings[i].u_contrast = new osg::Uniform( osg::Uniform::FLOAT, contrast_name );
cyl.gratings[i].u_orientation = new osg::Uniform( osg::Uniform::FLOAT, orientation_name );
set_grating_info( i, new_values);
}
cyl.geode = new osg::Geode;
cyl.geode->addDrawable(cyl.shape.get());
cyl.program = new osg::Program;
cyl.program->setName( "cylinder_shader" );
cyl.vertex_shader = new osg::Shader( osg::Shader::VERTEX );
cyl.fragment_shader = new osg::Shader( osg::Shader::FRAGMENT );
cyl.program->addShader(cyl.vertex_shader);
cyl.program->addShader(cyl.fragment_shader);
load_shader_source( cyl.vertex_shader, "grating_blended_centered.vert" );
load_shader_source( cyl.fragment_shader, "grating_blended_centered.frag" );
cyl.state_set = cyl.shape->getOrCreateStateSet();
cyl.state_set->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
cyl.state_set->setMode(GL_BLEND, osg::StateAttribute::ON);
cyl.state_set->setAttributeAndModes( cyl.program, osg::StateAttribute::ON);
for (int i=0;i<NUM_GRATINGS;i++) {
cyl.state_set->addUniform( cyl.gratings[i].u_phase_position );
cyl.state_set->addUniform( cyl.gratings[i].u_wavelength );
cyl.state_set->addUniform( cyl.gratings[i].u_contrast );
cyl.state_set->addUniform( cyl.gratings[i].u_orientation );
}
}
