Automated image output
Last update: 16.07.2025This script shows how to do animated graphics. The animation will show the variation of a random field parameter ranging between -3 and 3. It will generate a series of 50 png images. They can be converted e.g. to an animated GIF using ImageMagick.
-- load example data:
sdbfile = sos.currentScriptPath() .. "/../lsdyna/metal_forming__eroded_elements/sos_demo.sdb"
local settings = sos.LoadDataBaseSettings(sdbfile);
sos.loadDataBase(sos.database(), settings);
-- define a vector of parameter values:
lb = -3
ub = 3
N = 50
ticks = tmath.ZeroMatrix(N,1)
for i=0, N//4 do
ticks[i] = (ub+lb)/2 + (ub-lb)/2 * i/(N//4);
end
for i=N//4, (3*N)//4 do
ticks[i] = (ub+lb)/2 + (ub-lb)/2 *(1 - (i-N//4)/(N//4) );
end
for i=(3*N)//4, N-1 do
ticks[i] = (ub+lb)/2 + (ub-lb)/2 *( -1 + (i-(3*N)//4)/(N//4) );
end
print("ticks: ", ticks:Transpose());
-- define scene properties:
render_data = sos.AllRenderData();
render_data.contour_plot.data_type = sos.RenderData.ELEMENT_DATA
render_data.contour_plot.data_kind = sos.RenderData.RANDOM_FIELD
render_data.contour_plot.quantity_ident = "pstrain";
sos.sceneManager():setSceneData(render_data);
sos.sceneManager():setDefaultRotation();
--sos.sceneManager():setRotation(133.245, -0.5292, 0.442588, 0.723922);
sos.sceneManager():fit();
sos.sceneManager():setPaletteRange("CURRENT");
sos.sceneManager():setRulerVisibility(false);
sos.sceneManager():setLegendPosition("");
--sos.sceneManager():setLegendPosition("NE");
-- export values:
for i=0,ticks:Rows()-1 do
local inputs = tmath.Matrix({{ ticks[i], 0, 0, 0, 0, 0, 0}} )
sos.sceneManager():setSceneData( inputs );
local filename = string.format("image%03d.png", i+1)
sos.sceneManager():file(filename, 640, 480);
end
print("Terminate script with success.")
