Who can help me？

[yue3004]

In the case “Alphajet” of avionics.lua

 

local pitch = get_param_handle("D_PITCH")

function update()

      pitch:set(sensor_data.getStickRollPosition())  

   end    
end

In the case “Alphajet” of indication_page.lua

 

local PitchScaleParam        = CreateElement "ceTexPoly" --this could be the text area on HUD
PitchScaleParam.name         = create_guid_string() -- this must be external function call.
PitchScaleParam.vertices   = {{-grid_radius, grid_radius},
              { grid_radius, grid_radius},
              { grid_radius,-grid_radius},
              {-grid_radius,-grid_radius}}
PitchScaleParam.indices    = {0,1,2,2,3,0}
PitchScaleParam.tex_coords = {{0,0},{1,0},{1,1},{0,1}}
PitchScaleParam.material   = PitchScale       
PitchScaleParam.element_params  = {"D_PITCH"}  -- Global Variable to test
PitchScaleParam.controllers     = {{"move_up_down_using_parameter",0,0}} 
PitchScaleParam.collimated = true
PitchScaleParam.parent_element = grid_origin.name
AddElement(PitchScaleParam)

hud pitch did not move up and down。help me，thank guys。

[gyrovague]

Does your avionics.lua have a make_default_activity call in it? Otherwise your update function won't be called I think, e.g.

 

local update_time_step = 0.05  --20 times per second
make_default_activity(update_time_step)

 

Also, I think the 3rd param of that controllers entry should be non-zero, e.g.

PitchScaleParam.controllers     = {{"move_up_down_using_parameter",0,0.5}}

I think that controls the scale between the param value and how much it moves, can also be negative.

 

Hope this helps.