Revision: 7333
http://playerstage.svn.sourceforge.net/playerstage/?rev=7333&view=rev
Author: rtv
Date: 2009-02-13 18:55:58 +0000 (Fri, 13 Feb 2009)
Log Message:
-----------
added missing file
Modified Paths:
--------------
code/stage/trunk/examples/ctrl/fasr.cc
Added Paths:
-----------
code/stage/trunk/libstage/model_gripper.cc
Modified: code/stage/trunk/examples/ctrl/fasr.cc
===================================================================
--- code/stage/trunk/examples/ctrl/fasr.cc 2009-02-13 09:46:46 UTC (rev
7332)
+++ code/stage/trunk/examples/ctrl/fasr.cc 2009-02-13 18:55:58 UTC (rev
7333)
@@ -416,6 +416,8 @@
{
robot->at_dest = true;
+ robot->gripper->CommandOpen();
+
if( ++robot->work_put > workduration )
{
// protect sink from concurrent access
@@ -428,7 +430,6 @@
robot->work_put = 0;
- robot->gripper->CommandOpen();
}
}
Added: code/stage/trunk/libstage/model_gripper.cc
===================================================================
--- code/stage/trunk/libstage/model_gripper.cc (rev 0)
+++ code/stage/trunk/libstage/model_gripper.cc 2009-02-13 18:55:58 UTC (rev
7333)
@@ -0,0 +1,688 @@
+///////////////////////////////////////////////////////////////////////////
+//
+// File: model_gripper.cc
+// Authors: Richard Vaughan <[email protected]>
+// Doug Blank
+// Date: 21 April 2005
+//
+// CVS info:
+// $Source:
/home/tcollett/stagecvs/playerstage-cvs/code/stage/src/model_gripper.c,v $
+// $Author: thjc $
+// $Revision: 1.26.8.1 $
+//
+///////////////////////////////////////////////////////////////////////////
+
+/**
+...@ingroup model
+...@defgroup model_gripper Gripper model
+
+The ranger model simulates a simple two-fingered gripper with two
+internal break-beams, similar to the the Pioneer gripper.
+
+<h2>Worldfile properties</h2>
+
+...@par Summary and default values
+
+...@verbatim
+gripper
+(
+ # gripper properties
+ <none>
+
+ # model properties
+ size [0.12 0.28]
+)
+...@endverbatim
+
+...@par Notes
+
+...@par Details
+
+*/
+
+
+#include <sys/time.h>
+#include <math.h>
+#include "stage.hh"
+#include "worldfile.hh"
+using namespace Stg;
+
+// TODO - simulate energy use when moving grippers
+
+ModelGripper::ModelGripper( World* world,
+ Model*
parent )
+ : Model( world, parent, MODEL_TYPE_GRIPPER ),
+ cfg(), // configured below
+ cmd( CMD_NOOP )
+{
+ // set up a gripper-specific config structure
+ cfg.paddle_size.x = 0.66; // proportion of body length that is paddles
+ cfg.paddle_size.y = 0.1; // proportion of body width that is paddles
+ cfg.paddle_size.z = 0.4; // proportion of body height that is paddles
+
+ cfg.paddles = PADDLE_OPEN;
+ cfg.lift = LIFT_DOWN;
+ cfg.paddle_position = 0.0;
+ cfg.lift_position = 0.0;
+ cfg.paddles_stalled = false;
+ cfg.autosnatch = false;
+ cfg.grip_stack = NULL;
+ cfg.grip_stack_size = 1;
+
+ // place the break beam sensors at 1/4 and 3/4 the length of the paddle
+ cfg.break_beam_inset[0] = 3.0/4.0 * cfg.paddle_size.x;
+ cfg.break_beam_inset[1] = 1.0/4.0 * cfg.paddle_size.x;
+
+ cfg.close_limit = 1.0;
+
+ SetColor( stg_color_pack( 0.3, 0.3, 0.3, 0 ));
+
+ FixBlocks();
+
+ // default size
+ Geom geom;
+ geom.pose.x = 0.0;
+ geom.pose.y = 0.0;
+ geom.pose.a = 0.0;
+ geom.size.x = 0.2;
+ geom.size.y = 0.3;
+ geom.size.z = 0.2;
+ SetGeom( geom );
+
+ //Startup();
+
+ PositionPaddles();
+}
+
+ModelGripper::~ModelGripper()
+{
+ /* do nothing */
+}
+
+
+void ModelGripper::Load()
+{
+ cfg.autosnatch = wf->ReadInt( wf_entity, "autosnatch", cfg.autosnatch );
+
+ cfg.paddle_size.x = wf->ReadTupleFloat( wf_entity, "paddle_size", 0,
cfg.paddle_size.x );
+ cfg.paddle_size.y = wf->ReadTupleFloat( wf_entity, "paddle_size", 1,
cfg.paddle_size.y );
+ cfg.paddle_size.z = wf->ReadTupleFloat( wf_entity, "paddle_size", 2,
cfg.paddle_size.z );
+
+ const char* paddles = wf->ReadTupleString( wf_entity, "paddles", 0, NULL );
+ const char* lift = wf->ReadTupleString( wf_entity, "paddles", 1, NULL );
+
+ if( paddles && strcmp( paddles, "closed" ) == 0 )
+ {
+ cfg.paddle_position = 1.0;
+ cfg.paddles = PADDLE_CLOSED;
+ }
+
+ if( paddles && strcmp( paddles, "open" ) == 0 )
+ {
+ cfg.paddle_position = 0.0;
+ cfg.paddles = PADDLE_OPEN;
+ }
+
+ if( lift && strcmp( lift, "up" ) == 0 )
+ {
+ cfg.lift_position = 1.0;
+ cfg.lift = LIFT_UP;
+ }
+
+ if( lift && strcmp( lift, "down" ) == 0 )
+ {
+ cfg.lift_position = 0.0;
+ cfg.lift = LIFT_DOWN;
+ }
+
+ cfg.grip_stack_size = wf->ReadInt( wf_entity , "stack_size",
cfg.grip_stack_size );
+
+ FixBlocks();
+
+ // do this at the end to ensure that the blocks are resize correctly
+ Model::Load();
+}
+
+void ModelGripper::Save()
+{
+ Model::Save();
+
+ wf->WriteTupleFloat( wf_entity, "paddle_size", 0, cfg.paddle_size.x );
+ wf->WriteTupleFloat( wf_entity, "paddle_size", 1, cfg.paddle_size.y );
+ wf->WriteTupleFloat( wf_entity, "paddle_size", 2, cfg.paddle_size.z );
+
+ wf->WriteInt( wf_entity , "stack_size", cfg.grip_stack_size );
+}
+
+void ModelGripper::DataVisualize( Camera* cam )
+{
+ /* do nothing */
+}
+
+void ModelGripper::FixBlocks()
+{
+ // get rid of the default cube
+ ClearBlocks();
+
+ // add three blocks that make the gripper
+ // base
+ AddBlockRect( 0, 0, 1.0-cfg.paddle_size.x, 1.0, 1.0 );
+
+ // left (top) paddle
+ paddle_left = AddBlockRect( 1.0-cfg.paddle_size.x, 0, cfg.paddle_size.x,
cfg.paddle_size.y, cfg.paddle_size.z );
+
+ // right (bottom) paddle
+ paddle_right = AddBlockRect( 1.0-cfg.paddle_size.x, 1.0-cfg.paddle_size.y,
cfg.paddle_size.x, cfg.paddle_size.y, cfg.paddle_size.z );
+
+ PositionPaddles();
+}
+
+// Update the blocks that are the gripper's body
+void ModelGripper::PositionPaddles()
+{
+ UnMap();
+ double paddle_center_pos = cfg.paddle_position * (0.5 - cfg.paddle_size.y );
+ paddle_left->SetCenterY( paddle_center_pos + cfg.paddle_size.y/2.0 );
+ paddle_right->SetCenterY( 1.0 - paddle_center_pos - cfg.paddle_size.y/2.0);
+
+ double paddle_bottom = cfg.lift_position * (1.0 - cfg.paddle_size.z);
+ double paddle_top = paddle_bottom + cfg.paddle_size.z;
+
+ paddle_left->SetZ( paddle_bottom, paddle_top );
+ paddle_right->SetZ( paddle_bottom, paddle_top );
+
+ Map();
+ }
+
+
+void ModelGripper::Update()
+{
+ // no work to do if we're unsubscribed
+ if( subs < 1 )
+ {
+ Model::Update();
+ return;
+ }
+
+ float start_paddle_position = cfg.paddle_position;
+ float start_lift_position = cfg.lift_position;
+
+ switch( cmd )
+ {
+ case CMD_NOOP:
+ break;
+
+ case CMD_CLOSE:
+ if( cfg.paddles != PADDLE_CLOSED )
+ {
+ //puts( "closing gripper paddles" );
+ cfg.paddles = PADDLE_CLOSING;
+ }
+ break;
+
+ case CMD_OPEN:
+ if( cfg.paddles != PADDLE_OPEN )
+ {
+ //puts( "opening gripper paddles" );
+ cfg.paddles = PADDLE_OPENING;
+ }
+ break;
+
+ case CMD_UP:
+ if( cfg.lift != LIFT_UP )
+ {
+ //puts( "raising gripper lift" );
+ cfg.lift = LIFT_UPPING;
+ }
+ break;
+
+ case CMD_DOWN:
+ if( cfg.lift != LIFT_DOWN )
+ {
+ //puts( "lowering gripper lift" );
+ cfg.lift = LIFT_DOWNING;
+ }
+ break;
+
+ default:
+ printf( "unknown gripper command %d\n",cmd );
+ }
+
+ // // move the paddles
+ if( cfg.paddles == PADDLE_OPENING && !cfg.paddles_stalled )
+ {
+ cfg.paddle_position -= 0.05;
+
+ if( cfg.paddle_position < 0.0 ) // if we're fully open
+ {
+ cfg.paddle_position = 0.0;
+ cfg.paddles = PADDLE_OPEN; // change state
+ }
+
+ // drop the thing at the head of the stack
+ if( cfg.grip_stack &&
+ (cfg.paddle_position == 0.0 || cfg.paddle_position <
cfg.close_limit ))
+ {
+ Model* head = (Model*)cfg.grip_stack->data;
+ cfg.grip_stack = g_list_remove( cfg.grip_stack, head );
+
+ // move it to the new location
+ head->SetParent( NULL );
+ head->SetPose( this->GetGlobalPose() );
+
+ cfg.close_limit = 1.0;
+ }
+ }
+
+ else if( cfg.paddles == PADDLE_CLOSING && !cfg.paddles_stalled )
+ {
+ cfg.paddle_position += 0.05;
+ //printf( "paddle position %.2f\n", cfg.paddle_position );
+
+ if( cfg.paddle_position > cfg.close_limit ) // if we're fully
closed
+ {
+ cfg.paddle_position = cfg.close_limit;
+ cfg.paddles = PADDLE_CLOSED; // change state
+ }
+ }
+
+ switch( cfg.lift )
+ {
+ case LIFT_DOWNING:
+ cfg.lift_position -= 0.05;
+
+ if( cfg.lift_position < 0.0 ) // if we're fully down
+ {
+ cfg.lift_position = 0.0;
+ cfg.lift = LIFT_DOWN; // change state
+ }
+ break;
+
+ case LIFT_UPPING:
+ cfg.lift_position += 0.05;
+
+ if( cfg.lift_position > 1.0 ) // if we're fully open
+ {
+ cfg.lift_position = 1.0;
+ cfg.lift = LIFT_UP; // change state
+ }
+ break;
+
+ case LIFT_DOWN: // nothing to do for these cases
+ case LIFT_UP:
+ default:
+ break;
+ }
+
+ // if the paddles or lift have changed position
+ if( start_paddle_position != cfg.paddle_position ||
+ start_lift_position != cfg.lift_position )
+ // figure out where the paddles should be
+ PositionPaddles();
+
+
+ UpdateBreakBeams();
+ UpdateContacts();
+
+ Model::Update();
+}
+
+ModelGripper::data_t ModelGripper::GetData()
+{
+ data_t data;
+
+ data.paddles = cfg.paddles;
+ data.paddle_position = cfg.paddle_position;
+ data.lift = cfg.lift;
+ data.lift_position = cfg.lift_position;
+ data.beam[0] = cfg.beam[0];
+ data.beam[1] = cfg.beam[1];
+
+ data.contact[0] = cfg.contact[0];
+ data.contact[1] = cfg.contact[1];
+
+ if( cfg.grip_stack )
+ data.stack_count = g_list_length( cfg.grip_stack );
+ else
+ data.stack_count = 0;
+
+ data.paddles_stalled = cfg.paddles_stalled;
+
+ return data;
+}
+
+
+void ModelGripper::SetConfig( config_t & cfg )
+{
+ this->cfg = cfg;
+}
+
+
+static bool gripper_raytrace_match( Model* hit,
+
Model* finder,
+
const void* dummy )
+{
+ return( (hit != finder) && hit->vis.gripper_return );
+ // can't use the normal relation check, because we may pick things
+ // up and we must still see them.
+}
+
+void ModelGripper::UpdateBreakBeams()
+{
+ for( unsigned int index=0; index < 2; index++ )
+ {
+ Pose pz;
+
+ // x location of break beam origin
+ double inset = cfg.break_beam_inset[index];
+
+ pz.x = (geom.size.x - inset * geom.size.x) - geom.size.x/2.0;
+
+ // y location of break beam origin
+ pz.y = (1.0 - cfg.paddle_position) *
((geom.size.y/2.0)-(geom.size.y*cfg.paddle_size.y));
+
+ pz.z = 0.0; // TODO
+
+ // break beam local heading
+ pz.a = -M_PI/2.0;
+
+ // break beam max range
+ double bbr =
+ (1.0 - cfg.paddle_position) * (geom.size.y - (geom.size.y *
cfg.paddle_size.y * 2.0 ));
+
+ stg_raytrace_result_t sample =
+ Raytrace( pz, // ray origin
+ bbr, // range
+ gripper_raytrace_match, //
match func
+ NULL, // match arg
+ true ); // ztest
+
+ cfg.beam[index] = sample.mod;
+ }
+
+ // autosnatch grabs anything that breaks the inner beam
+ if( cfg.autosnatch )
+ {
+ if( cfg.beam[0] || cfg.beam[1] )
+ cmd = CMD_CLOSE;
+ else
+ cmd = CMD_OPEN;
+ }
+}
+
+void ModelGripper::UpdateContacts()
+{
+ cfg.paddles_stalled = false; // may be changed below
+
+ Pose lpz, rpz;
+
+ // x location of contact sensor origin
+ lpz.x = ((1.0 - cfg.paddle_size.x) * geom.size.x) - geom.size.x/2.0 ;
+ rpz.x = ((1.0 - cfg.paddle_size.x) * geom.size.x) - geom.size.x/2.0 ;
+
+// //double inset = beam ? cfg->inner_break_beam_inset :
cfg->outer_break_beam_inset;
+// //pz.x = (geom.size.x - inset * geom.size.x) - geom.size.x/2.0;
+
+ // y location of paddle beam origin
+
+ lpz.y = (1.0 - cfg.paddle_position) *
+ ((geom.size.y/2.0) - (geom.size.y*cfg.paddle_size.y));
+
+ rpz.y = (1.0 - cfg.paddle_position) *
+ -((geom.size.y/2.0) - (geom.size.y*cfg.paddle_size.y));
+
+ lpz.z = 0.0; // todo
+ rpz.z = 0.0;
+
+ // paddle beam local heading
+ lpz.a = 0.0;
+ rpz.a = 0.0;
+
+ // paddle beam max range
+ double bbr = cfg.paddle_size.x * geom.size.x;
+
+ stg_raytrace_result_t leftsample =
+ Raytrace( lpz, // ray origin
+ bbr, // range
+ gripper_raytrace_match, // match func
+ NULL, // match arg
+ true ); // ztest
+
+ cfg.contact[0] = leftsample.mod;
+
+ stg_raytrace_result_t rightsample =
+ Raytrace( rpz, // ray origin
+ bbr, // range
+ gripper_raytrace_match, // match func
+ NULL, // match arg
+ true ); // ztest
+
+ cfg.contact[1] = rightsample.mod;
+
+ if( cfg.contact[0] || cfg.contact[1] )
+ {
+ cfg.paddles_stalled = true;;
+
+ // if( lhit && (lhit == rhit) )
+ // {
+ // //puts( "left and right hit same thing" );
+
+ if( cfg.paddles == PADDLE_CLOSING )
+ {
+ Model* hit = cfg.contact[0];
+ if( !hit )
+ hit = cfg.contact[1];
+
+ if( cfg.grip_stack_size > 0 &&
+ (g_list_length( cfg.grip_stack ) <
cfg.grip_stack_size) )
+ {
+ // get the global pose of the gripper for
calculations of the gripped object position
+ // and move it to be right between the paddles
+ Geom hitgeom = hit->GetGeom();
+ //Pose hitgpose = hit->GetGlobalPose();
+
+ // stg_pose_t pose = {0,0,0};
+ // stg_model_local_to_global( lhit,
&pose );
+ // stg_model_global_to_local( mod,
&pose );
+
+ // // grab the model we hit - very
simple grip model for now
+ hit->SetParent( this );
+ hit->SetPose( Pose(0,0, -1.0 * geom.size.z
,0) );
+
+ cfg.grip_stack = g_list_prepend(
cfg.grip_stack, hit );
+
+ // // calculate how far closed we can
get the paddles now
+ double puckw = hitgeom.size.y;
+ double gripperw = geom.size.y;
+ cfg.close_limit = MAX( 0.0, 1.0 -
puckw/(gripperw - cfg.paddle_size.y/2.0 ));
+ }
+ }
+ }
+}
+
+// int gripper_render_data( stg_model_t* mod, void* userp )
+// {
+// //puts( "gripper render data" );
+
+// // only draw if someone is using the gripper
+// if( mod->subs < 1 )
+// return 0;
+
+// stg_rtk_fig_t* fig = stg_model_get_fig( mod, "gripper_data_fig" );
+
+// if( ! fig )
+// {
+// fig = stg_model_fig_create( mod, "gripper_data_fig", "top",
STG_LAYER_GRIPPERDATA );
+// //stg_rtk_fig_color_rgb32( fig, gripper_col );
+// stg_rtk_fig_color_rgb32( fig, 0xFF0000 ); // red
+
+// }
+// else
+// stg_rtk_fig_clear( fig );
+
+// //printf( "SUBS %d\n", mod->subs );
+
+// stg_gripper_data_t* data = (stg_gripper_data_t*)mod->data;
+// assert(data);
+
+// stg_gripper_config_t *cfg = (stg_gripper_config_t*)mod->cfg;
+// assert(cfg);
+
+// stg_geom_t *geom = &mod->geom;
+
+// //stg_rtk_fig_rectangle( gui->data, 0,0,0, geom.size.x, geom.size.y, 0 );
+
+// // different x location for each beam
+// double ibbx = (geom->size.x - cfg->inner_break_beam_inset *
geom->size.x) - geom->size.x/2.0;
+// double obbx = (geom->size.x - cfg->outer_break_beam_inset *
geom->size.x) - geom->size.x/2.0;
+
+// // common y position
+// double bby =
+// (1.0-data->paddle_position) *
((geom->size.y/2.0)-(geom->size.y*cfg->paddle_size.y));
+
+// // size of the paddle indicator lights
+// double led_dx = cfg->paddle_size.y * 0.5 * geom->size.y;
+
+
+// if( data->inner_break_beam )
+// {
+// stg_rtk_fig_rectangle( fig, ibbx, bby+led_dx, 0, led_dx, led_dx, 1 );
+// stg_rtk_fig_rectangle( fig, ibbx, -bby-led_dx, 0, led_dx, led_dx, 1 );
+// }
+// else
+// {
+// stg_rtk_fig_line( fig, ibbx, bby, ibbx, -bby );
+// stg_rtk_fig_rectangle( fig, ibbx, bby+led_dx, 0, led_dx, led_dx, 0 );
+// stg_rtk_fig_rectangle( fig, ibbx, -bby-led_dx, 0, led_dx, led_dx, 0 );
+// }
+
+// if( data->outer_break_beam )
+// {
+// stg_rtk_fig_rectangle( fig, obbx, bby+led_dx, 0, led_dx, led_dx, 1 );
+// stg_rtk_fig_rectangle( fig, obbx, -bby-led_dx, 0, led_dx, led_dx, 1 );
+// }
+// else
+// {
+// stg_rtk_fig_line( fig, obbx, bby, obbx, -bby );
+// stg_rtk_fig_rectangle( fig, obbx, bby+led_dx, 0, led_dx, led_dx, 0 );
+// stg_rtk_fig_rectangle( fig, obbx, -bby-led_dx, 0, led_dx, led_dx, 0 );
+// }
+
+// // draw the contact indicators
+// stg_rtk_fig_rectangle( fig,
+// ((1.0 - cfg->paddle_size.x/2.0) * geom->size.x) -
geom->size.x/2.0,
+// (1.0 - cfg->paddle_position) *
((geom->size.y/2.0)-(geom->size.y*cfg->paddle_size.y)),
+// 0.0,
+// cfg->paddle_size.x * geom->size.x,
+// cfg->paddle_size.y/6.0 * geom->size.y,
+// data->paddle_contacts[0] );
+
+// stg_rtk_fig_rectangle( fig,
+// ((1.0 - cfg->paddle_size.x/2.0) * geom->size.x) -
geom->size.x/2.0,
+// (1.0 - cfg->paddle_position) *
-((geom->size.y/2.0)-(geom->size.y*cfg->paddle_size.y)),
+// 0.0,
+// cfg->paddle_size.x * geom->size.x,
+// cfg->paddle_size.y/6.0 * geom->size.y,
+// data->paddle_contacts[1] );
+
+// //stg_rtk_fig_color_rgb32( fig, gripper_col );
+
+// return 0;
+// }
+
+
+// int gripper_render_cfg( stg_model_t* mod, void* user )
+// {
+// puts( "gripper render cfg" );
+// stg_rtk_fig_t* fig = stg_model_get_fig( mod, "gripper_cfg_fig" );
+
+// if( ! fig )
+// {
+// fig = stg_model_fig_create( mod, "gripper_cfg_fig", "top",
+// STG_LAYER_GRIPPERCONFIG );
+
+// stg_rtk_fig_color_rgb32( fig, stg_lookup_color( STG_GRIPPER_CFG_COLOR
));
+// }
+// else
+// stg_rtk_fig_clear( fig );
+
+// stg_geom_t geom;
+// stg_model_get_geom( mod, &geom );
+
+// // get the config and make sure it's the right size
+// stg_gripper_config_t* cfg = (stg_gripper_config_t*)mod->cfg;
+// assert( mod->cfg_len == sizeof(stg_gripper_config_t) );
+
+// // different x location for each beam
+// double ibbx = (cfg->inner_break_beam_inset) * geom.size.x -
geom.size.x/2.0;
+// double obbx = (cfg->outer_break_beam_inset) * geom.size.x -
geom.size.x/2.0;
+
+// // common y position
+// double bby =
+// (1.0-cfg->paddle_position) *
((geom.size.y/2.0)-(geom.size.y*cfg->paddle_size.y));
+
+// // draw the position of the break beam sensors
+// stg_rtk_fig_rectangle( fig, ibbx, bby, 0, 0.01, 0.01, 0 );
+// stg_rtk_fig_rectangle( fig, obbx, bby, 0, 0.01, 0.01, 0 );
+
+// return 0; //ok
+// }
+
+
+// int gripper_startup( stg_model_t* mod )
+// {
+// PRINT_DEBUG( "gripper startup" );
+// stg_model_set_watts( mod, STG_GRIPPER_WATTS );
+// return 0; // ok
+// }
+
+// int gripper_shutdown( stg_model_t* mod )
+// {
+// PRINT_DEBUG( "gripper shutdown" );
+// stg_model_set_watts( mod, 0 );
+
+// // unrender the break beams & lights
+// stg_model_fig_clear( mod, "gripper_data_fig" );
+// return 0; // ok
+// }
+
+// void stg_print_gripper_config( stg_gripper_config_t* cfg )
+// {
+// char* pstate;
+// switch( cfg->paddles )
+// {
+// case STG_GRIPPER_PADDLE_OPEN: pstate = "OPEN"; break;
+// case STG_GRIPPER_PADDLE_CLOSED: pstate = "CLOSED"; break;
+// case STG_GRIPPER_PADDLE_OPENING: pstate = "OPENING"; break;
+// case STG_GRIPPER_PADDLE_CLOSING: pstate = "CLOSING"; break;
+// default: pstate = "*unknown*";
+// }
+
+// char* lstate;
+// switch( cfg->lift )
+// {
+// case STG_GRIPPER_LIFT_UP: lstate = "UP"; break;
+// case STG_GRIPPER_LIFT_DOWN: lstate = "DOWN"; break;
+// case STG_GRIPPER_LIFT_DOWNING: lstate = "DOWNING"; break;
+// case STG_GRIPPER_LIFT_UPPING: lstate = "UPPING"; break;
+// default: lstate = "*unknown*";
+// }
+
+// printf("gripper state: paddles(%s)[%.2f] lift(%s)[%.2f] stall(%s)\n",
+// pstate, cfg->paddle_position, lstate, cfg->lift_position,
+// cfg->paddles_stalled ? "true" : "false" );
+// }
+
+
+// int gripper_unrender_data( stg_model_t* mod, void* userp )
+// {
+// stg_model_fig_clear( mod, "gripper_data_fig" );
+// return 1; // callback just runs one time
+// }
+
+// int gripper_unrender_cfg( stg_model_t* mod, void* userp )
+// {
+// stg_model_fig_clear( mod, "gripper_cfg_fig" );
+// return 1; // callback just runs one time
+// }
+
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