You're right - there isn't a constant time step in the streamline, but you
can make it so.
You can convert each streamline to a field that maps time to position by
using the
time component as positions and the positions component as data.  Then
create a list
of evenly spaced points in time, and use Map to look up the corresponding
positions.
Then feed that into Construct to make a new line connecting those points,
and you have
a line that aproximates the streamline with even time steps.

There are a couple tricks - you need to convert the scalar time component
to a 1-vector
by using Compute("[a]"); before it can be used as a valid positions
component.  Here's a
net.  The glop on the left fakes a vector dataset.  The stuff on the right
implements the loop
through the streamlines and the steps that create the evenly spaced points.
There's a control
panel allowing you to vary the number of points along the approximation.
You have to reset
the loop after resetting the number of points.

Greg

--------------------------- CUT HERE --------------------------------

//
// time: Fri Mar 15 17:19:07 2002
//
// version: 3.1.2 (format), 4.1.3 (DX)
//
//
// MODULE main
// workspace: width = 750, height = 599
// layout: snap = 0, width = 50, height = 50, align = NN
//
macro main(
) -> (
) {
    //
    // node Collect[2]: x = 634, y = 264, inputs = 2, label = Collect
    //
main_Collect_2_out_1 =
    Collect(
    main_Collect_2_in_1,
    main_Collect_2_in_2
    ) [instance: 2, cache: 1];
    //
    // node Reset[1]: x = 704, y = 241, inputs = 6, label = Reset
    // input[1]: defaulting = 0, visible = 0, type = 32, value = 
"main_Reset_1_out_1"
    // input[2]: defaulting = 0, visible = 0, type = 29, value = 0
    // input[3]: defaulting = 0, visible = 0, type = 3, value = 0
    // input[4]: defaulting = 1, visible = 0, type = 29, value = 1
    // input[5]: defaulting = 1, visible = 0, type = 29, value = 0
    // output[1]: visible = 1, type = 29, value = 0
    // toggle : 0
    //
    //
    // node GetGlobal[1]: x = 658, y = 342, inputs = 3, label = GetGlobal
    //
main_GetGlobal_1_out_1,
main_GetGlobal_1_out_2 =
    GetGlobal(
    main_Collect_2_out_1,
    main_Reset_1_out_1,
    main_GetGlobal_1_in_3
    ) [instance: 1, cache: 1];
    //
    // node Construct[1]: x = 0, y = 0, inputs = 4, label = Construct
    // input[1]: defaulting = 0, visible = 1, type = 16777224, value = {[-1 -1 
0]}
    // input[2]: defaulting = 0, visible = 1, type = 16777224, value = {[.1 .1 
.1]}
    // input[3]: defaulting = 0, visible = 1, type = 8, value = [21 21 21]
    //
main_Construct_1_out_1 =
    Construct(
    main_Construct_1_in_1,
    main_Construct_1_in_2,
    main_Construct_1_in_3,
    main_Construct_1_in_4
    ) [instance: 1, cache: 1];
    //
    // node Replace[1]: x = 0, y = 73, inputs = 4, label = Replace
    // input[3]: defaulting = 0, visible = 1, type = 32, value = "positions"
    // input[4]: defaulting = 0, visible = 1, type = 32, value = "data"
    //
main_Replace_1_out_1 =
    Replace(
    main_Construct_1_out_1,
    main_Construct_1_out_1,
    main_Replace_1_in_3,
    main_Replace_1_in_4
    ) [instance: 1, cache: 1];
    //
    // node Scalar[1]: x = 123, y = 79, inputs = 11, label = Scalar
    // input[1]: defaulting = 0, visible = 0, type = 32, value = "Scalar_1"
    // input[3]: defaulting = 0, visible = 0, type = 5, value = 1.0
    // input[5]: defaulting = 1, visible = 0, type = 5, value = -1000000.0
    // input[6]: defaulting = 1, visible = 0, type = 5, value = 1000000.0
    // input[7]: defaulting = 1, visible = 0, type = 5, value = 1.0
    // input[9]: defaulting = 1, visible = 0, type = 1, value = 5
    // output[1]: visible = 1, type = 5, value = 1.0
    //
    //
    // node Compute[1]: x = 29, y = 148, inputs = 3, label = Compute
    // input[1]: defaulting = 0, visible = 0, type = 32, value = "[-$0.y, $0.x, 
$0.z*$1]"
    // expression: value = [-a.y, a.x, a.z*b]
    // name[2]: value = a
    // name[3]: value = b
    //
main_Compute_1_out_1 =
    Compute(
    main_Compute_1_in_1,
    main_Replace_1_out_1,
    main_Scalar_1_out_1
    ) [instance: 1, cache: 1];
    //
    // node Integer[1]: x = 229, y = 0, inputs = 11, label = Integer
    // input[1]: defaulting = 0, visible = 0, type = 32, value = "Integer_1"
    // input[3]: defaulting = 0, visible = 0, type = 1, value = 2
    // input[5]: defaulting = 1, visible = 0, type = 1, value = -1000000
    // input[6]: defaulting = 1, visible = 0, type = 1, value = 1000000
    // input[7]: defaulting = 1, visible = 0, type = 5, value = 1.0
    // input[9]: defaulting = 1, visible = 0, type = 1, value = 0
    // output[1]: visible = 1, type = 1, value = 2
    //
    //
    // node Enumerate[1]: x = 198, y = 74, inputs = 5, label = Enumerate
    // input[1]: defaulting = 0, visible = 1, type = 29, value = 0.0
    // input[2]: defaulting = 0, visible = 1, type = 29, value = 1.0
    //
main_Enumerate_1_out_1 =
    Enumerate(
    main_Enumerate_1_in_1,
    main_Enumerate_1_in_2,
    main_Integer_1_out_1,
    main_Enumerate_1_in_4,
    main_Enumerate_1_in_5
    ) [instance: 1, cache: 1];
    //
    // node Compute[2]: x = 224, y = 146, inputs = 3, label = Compute
    // input[1]: defaulting = 0, visible = 0, type = 32, value = "(-0.5 + $0) * 
[1.0, 1.0, 0.0] + [0.0, 0.0, 0.1]"
    // expression: value = (-0.5 + a) * [1.0, 1.0, 0.0] + [0.0, 0.0, 0.1]
    // name[2]: value = a
    // name[3]: value = b
    //
main_Compute_2_out_1 =
    Compute(
    main_Compute_2_in_1,
    main_Enumerate_1_out_1,
    main_Compute_2_in_3
    ) [instance: 2, cache: 1];
    //
    // node Streamline[1]: x = 127, y = 230, inputs = 7, label = Streamline
    //
main_Streamline_1_out_1 =
    Streamline(
    main_Compute_1_out_1,
    main_Compute_2_out_1,
    main_Streamline_1_in_3,
    main_Streamline_1_in_4,
    main_Streamline_1_in_5,
    main_Streamline_1_in_6,
    main_Streamline_1_in_7
    ) [instance: 1, cache: 1];
    //
    // node ForEachMember[1]: x = 334, y = 4, inputs = 1, label = ForEachMember
    //
main_ForEachMember_1_out_1,
main_ForEachMember_1_out_2,
main_ForEachMember_1_out_3 =
    ForEachMember(
    main_Streamline_1_out_1
    ) [instance: 1, cache: 1];
    //
    // node Rename[3]: x = 487, y = 21, inputs = 3, label = Rename
    // input[2]: defaulting = 0, visible = 1, type = 32, value = "time"
    // input[3]: defaulting = 0, visible = 1, type = 32, value = "data"
    //
main_Rename_3_out_1 =
    Rename(
    main_ForEachMember_1_out_1,
    main_Rename_3_in_2,
    main_Rename_3_in_3
    ) [instance: 3, cache: 1];
    //
    // node Statistics[1]: x = 483, y = 98, inputs = 1, label = Statistics
    //
main_Statistics_1_out_1,
main_Statistics_1_out_2,
main_Statistics_1_out_3,
main_Statistics_1_out_4,
main_Statistics_1_out_5 =
    Statistics(
    main_Rename_3_out_1
    ) [instance: 1, cache: 1];
    //
    // node Integer[2]: x = 644, y = 145, inputs = 11, label = Integer
    // input[1]: defaulting = 0, visible = 0, type = 32, value = "Integer_2"
    // input[3]: defaulting = 0, visible = 0, type = 1, value = 7
    // input[5]: defaulting = 1, visible = 0, type = 1, value = -1000000
    // input[6]: defaulting = 1, visible = 0, type = 1, value = 1000000
    // input[7]: defaulting = 1, visible = 0, type = 5, value = 1.0
    // input[9]: defaulting = 1, visible = 0, type = 1, value = 0
    // output[1]: visible = 1, type = 1, value = 7
    //
    //
    // node Enumerate[2]: x = 486, y = 221, inputs = 5, label = Enumerate
    // input[1]: defaulting = 0, visible = 1, type = 29, value = 0
    //
main_Enumerate_2_out_1 =
    Enumerate(
    main_Enumerate_2_in_1,
    main_Statistics_1_out_5,
    main_Integer_2_out_1,
    main_Enumerate_2_in_4,
    main_Enumerate_2_in_5
    ) [instance: 2, cache: 1];
    //
    // node Compute[3]: x = 383, y = 90, inputs = 2, label = Compute
    // input[1]: defaulting = 0, visible = 0, type = 32, value = "[$0]"
    // expression: value = [a]
    // name[2]: value = a
    //
main_Compute_3_out_1 =
    Compute(
    main_Compute_3_in_1,
    main_Rename_3_out_1
    ) [instance: 3, cache: 1];
    //
    // node Rename[5]: x = 390, y = 168, inputs = 3, label = Rename
    // input[2]: defaulting = 0, visible = 1, type = 32, value = "data"
    // input[3]: defaulting = 0, visible = 1, type = 32, value = "positions"
    //
main_Rename_5_out_1 =
    Rename(
    main_Compute_3_out_1,
    main_Rename_5_in_2,
    main_Rename_5_in_3
    ) [instance: 5, cache: 1];
    //
    // node Replace[5]: x = 355, y = 254, inputs = 4, label = Replace
    // input[3]: defaulting = 0, visible = 1, type = 32, value = "positions"
    // input[4]: defaulting = 0, visible = 1, type = 32, value = "data"
    //
main_Replace_5_out_1 =
    Replace(
    main_ForEachMember_1_out_1,
    main_Rename_5_out_1,
    main_Replace_5_in_3,
    main_Replace_5_in_4
    ) [instance: 5, cache: 1];
    //
    // node Map[1]: x = 486, y = 314, inputs = 4, label = Map
    //
main_Map_1_out_1 =
    Map(
    main_Enumerate_2_out_1,
    main_Replace_5_out_1,
    main_Map_1_in_3,
    main_Map_1_in_4
    ) [instance: 1, cache: 1];
    //
    // node Extract[1]: x = 376, y = 347, inputs = 2, label = Extract
    // input[2]: defaulting = 0, visible = 1, type = 32, value = "data"
    //
main_Extract_1_out_1 =
    Extract(
    main_Map_1_out_1,
    main_Extract_1_in_2
    ) [instance: 1, cache: 1];
    //
    // node Construct[2]: x = 446, y = 387, inputs = 4, label = Construct
    //
main_Construct_2_out_1 =
    Construct(
    main_Extract_1_out_1,
    main_Construct_2_in_2,
    main_Construct_2_in_3,
    main_Construct_2_in_4
    ) [instance: 2, cache: 1];
    //
    // node Append[1]: x = 584, y = 431, inputs = 5, label = Append
    //
main_Append_1_out_1 =
    Append(
    main_GetGlobal_1_out_1,
    main_Construct_2_out_1,
    main_Append_1_in_3,
    main_Append_1_in_4,
    main_Append_1_in_5
    ) [instance: 1, cache: 1];
    //
    // node AutoColor[1]: x = 149, y = 346, inputs = 10, label = AutoColor
    //
main_AutoColor_1_out_1,
main_AutoColor_1_out_2 =
    AutoColor(
    main_Streamline_1_out_1,
    main_AutoColor_1_in_2,
    main_AutoColor_1_in_3,
    main_AutoColor_1_in_4,
    main_AutoColor_1_in_5,
    main_AutoColor_1_in_6,
    main_AutoColor_1_in_7,
    main_AutoColor_1_in_8,
    main_AutoColor_1_in_9,
    main_AutoColor_1_in_10
    ) [instance: 1, cache: 1];
    //
    // node ShowBox[1]: x = 18, y = 236, inputs = 1, label = ShowBox
    //
main_ShowBox_1_out_1,
main_ShowBox_1_out_2 =
    ShowBox(
    main_Compute_1_out_1
    ) [instance: 1, cache: 1];
    //
    // node ShowConnections[1]: x = 265, y = 501, inputs = 1, label = 
ShowConnections
    //
main_ShowConnections_1_out_1 =
    ShowConnections(
    main_GetGlobal_1_out_1
    ) [instance: 1, cache: 1];
    //
    // node Collect[1]: x = 25, y = 364, inputs = 3, label = Collect
    //
main_Collect_1_out_1 =
    Collect(
    main_ShowBox_1_out_1,
    main_AutoColor_1_out_1,
    main_ShowConnections_1_out_1
    ) [instance: 1, cache: 1];
    //
    // node Image[1]: x = 25, y = 482, inputs = 49, label = Image
    // input[1]: defaulting = 0, visible = 0, type = 67108863, value = "Image_1"
    // input[4]: defaulting = 0, visible = 0, type = 1, value = 1
    // input[5]: defaulting = 0, visible = 0, type = 8, value = [0 0 1]
    // input[6]: defaulting = 0, visible = 0, type = 8, value = [6.75785 
0.213234 6.46853]
    // input[7]: defaulting = 0, visible = 0, type = 5, value = 4.66014
    // input[8]: defaulting = 0, visible = 0, type = 1, value = 640
    // input[9]: defaulting = 0, visible = 0, type = 5, value = 0.750781
    // input[10]: defaulting = 0, visible = 0, type = 8, value = [0.413466 
0.73344 -0.539548]
    // input[11]: defaulting = 1, visible = 0, type = 5, value = 30.0001
    // input[12]: defaulting = 0, visible = 0, type = 1, value = 0
    // input[14]: defaulting = 0, visible = 0, type = 1, value = 1
    // input[15]: defaulting = 1, visible = 0, type = 32, value = "none"
    // input[16]: defaulting = 1, visible = 0, type = 32, value = "none"
    // input[17]: defaulting = 0, visible = 0, type = 1, value = 1
    // input[18]: defaulting = 0, visible = 0, type = 1, value = 1
    // input[19]: defaulting = 0, visible = 0, type = 1, value = 1
    // input[29]: defaulting = 1, visible = 0, type = 3, value = 0
    // input[41]: defaulting = 0, visible = 0, type = 32, value = "none"
    // depth: value = 24
    // window: position = (0.0442,0.1995), size = 0.6424x0.7062
    // internal caching: 1
    //
main_Image_1_out_1,
main_Image_1_out_2,
main_Image_1_out_3 =
    Image(
    main_Image_1_in_1,
    main_Collect_1_out_1,
    main_Image_1_in_3,
    main_Image_1_in_4,
    main_Image_1_in_5,
    main_Image_1_in_6,
    main_Image_1_in_7,
    main_Image_1_in_8,
    main_Image_1_in_9,
    main_Image_1_in_10,
    main_Image_1_in_11,
    main_Image_1_in_12,
    main_Image_1_in_13,
    main_Image_1_in_14,
    main_Image_1_in_15,
    main_Image_1_in_16,
    main_Image_1_in_17,
    main_Image_1_in_18,
    main_Image_1_in_19,
    main_Image_1_in_20,
    main_Image_1_in_21,
    main_Image_1_in_22,
    main_Image_1_in_23,
    main_Image_1_in_24,
    main_Image_1_in_25,
    main_Image_1_in_26,
    main_Image_1_in_27,
    main_Image_1_in_28,
    main_Image_1_in_29,
    main_Image_1_in_30,
    main_Image_1_in_31,
    main_Image_1_in_32,
    main_Image_1_in_33,
    main_Image_1_in_34,
    main_Image_1_in_35,
    main_Image_1_in_36,
    main_Image_1_in_37,
    main_Image_1_in_38,
    main_Image_1_in_39,
    main_Image_1_in_40,
    main_Image_1_in_41,
    main_Image_1_in_42,
    main_Image_1_in_43,
    main_Image_1_in_44,
    main_Image_1_in_45,
    main_Image_1_in_46,
    main_Image_1_in_47,
    main_Image_1_in_48,
    main_Image_1_in_49
    ) [instance: 1, cache: 1];
    //
    // node SetGlobal[1]: x = 613, y = 537, inputs = 3, label = SetGlobal
    //
    SetGlobal(
    main_Append_1_out_1,
    main_GetGlobal_1_out_2,
    main_SetGlobal_1_in_3
    ) [instance: 1, cache: 1];
// network: end of macro body
CacheScene(main_Image_1_in_1, main_Image_1_out_1, main_Image_1_out_2);
}
main_Collect_2_in_1 = NULL;
main_Collect_2_in_2 = NULL;
main_Collect_2_out_1 = NULL;
main_Reset_1_in_1 = "main_Reset_1_out_1";
main_Reset_1_in_2 = 0;
main_Reset_1_in_3 = 0;
main_Reset_1_in_4 = NULL;
main_Reset_1_in_5 = NULL;
main_Reset_1_in_6 = NULL;
main_Reset_1_out_1 = 0;
main_GetGlobal_1_in_3 = NULL;
main_GetGlobal_1_out_1 = NULL;
main_GetGlobal_1_out_2 = NULL;
main_Construct_1_in_1 = {[-1 -1 0]};
main_Construct_1_in_2 = {[.1 .1 .1]};
main_Construct_1_in_3 = [21 21 21];
main_Construct_1_in_4 = NULL;
main_Construct_1_out_1 = NULL;
main_Replace_1_in_3 = "positions";
main_Replace_1_in_4 = "data";
main_Replace_1_out_1 = NULL;
main_Scalar_1_in_1 = "Scalar_1";
main_Scalar_1_in_2 = NULL;
main_Scalar_1_in_3 = 1.0 ;
main_Scalar_1_in_4 = NULL;
main_Scalar_1_in_5 = NULL;
main_Scalar_1_in_6 = NULL;
main_Scalar_1_in_7 = NULL;
main_Scalar_1_in_8 = NULL;
main_Scalar_1_in_9 = NULL;
main_Scalar_1_in_10 = NULL;
main_Scalar_1_in_11 = NULL;
main_Scalar_1_out_1 = 1.0 ;
main_Compute_1_in_1 = "[-$0.y, $0.x, $0.z*$1]";
main_Compute_1_out_1 = NULL;
main_Integer_1_in_1 = "Integer_1";
main_Integer_1_in_2 = NULL;
main_Integer_1_in_3 = 2 ;
main_Integer_1_in_4 = NULL;
main_Integer_1_in_5 = NULL;
main_Integer_1_in_6 = NULL;
main_Integer_1_in_7 = NULL;
main_Integer_1_in_8 = NULL;
main_Integer_1_in_9 = NULL;
main_Integer_1_in_10 = NULL;
main_Integer_1_in_11 = NULL;
main_Integer_1_out_1 = 2 ;
main_Enumerate_1_in_1 = 0.0;
main_Enumerate_1_in_2 = 1.0;
main_Enumerate_1_in_4 = NULL;
main_Enumerate_1_in_5 = NULL;
main_Enumerate_1_out_1 = NULL;
main_Compute_2_in_1 = "(-0.5 + $0) * [1.0, 1.0, 0.0] + [0.0, 0.0, 0.1]";
main_Compute_2_in_3 = NULL;
main_Compute_2_out_1 = NULL;
main_Streamline_1_in_3 = NULL;
main_Streamline_1_in_4 = NULL;
main_Streamline_1_in_5 = NULL;
main_Streamline_1_in_6 = NULL;
main_Streamline_1_in_7 = NULL;
main_Streamline_1_out_1 = NULL;
main_ForEachMember_1_out_1 = NULL;
main_Rename_3_in_2 = "time";
main_Rename_3_in_3 = "data";
main_Rename_3_out_1 = NULL;
main_Statistics_1_out_5 = NULL;
main_Integer_2_in_1 = "Integer_2";
main_Integer_2_in_2 = NULL;
main_Integer_2_in_3 = 7 ;
main_Integer_2_in_4 = NULL;
main_Integer_2_in_5 = NULL;
main_Integer_2_in_6 = NULL;
main_Integer_2_in_7 = NULL;
main_Integer_2_in_8 = NULL;
main_Integer_2_in_9 = NULL;
main_Integer_2_in_10 = NULL;
main_Integer_2_in_11 = NULL;
main_Integer_2_out_1 = 7 ;
main_Enumerate_2_in_1 = 0;
main_Enumerate_2_in_4 = NULL;
main_Enumerate_2_in_5 = NULL;
main_Enumerate_2_out_1 = NULL;
main_Compute_3_in_1 = "[$0]";
main_Compute_3_out_1 = NULL;
main_Rename_5_in_2 = "data";
main_Rename_5_in_3 = "positions";
main_Rename_5_out_1 = NULL;
main_Replace_5_in_3 = "positions";
main_Replace_5_in_4 = "data";
main_Replace_5_out_1 = NULL;
main_Map_1_in_3 = NULL;
main_Map_1_in_4 = NULL;
main_Map_1_out_1 = NULL;
main_Extract_1_in_2 = "data";
main_Extract_1_out_1 = NULL;
main_Construct_2_in_2 = NULL;
main_Construct_2_in_3 = NULL;
main_Construct_2_in_4 = NULL;
main_Construct_2_out_1 = NULL;
main_Append_1_in_3 = NULL;
main_Append_1_in_4 = NULL;
main_Append_1_in_5 = NULL;
main_Append_1_out_1 = NULL;
main_AutoColor_1_in_2 = NULL;
main_AutoColor_1_in_3 = NULL;
main_AutoColor_1_in_4 = NULL;
main_AutoColor_1_in_5 = NULL;
main_AutoColor_1_in_6 = NULL;
main_AutoColor_1_in_7 = NULL;
main_AutoColor_1_in_8 = NULL;
main_AutoColor_1_in_9 = NULL;
main_AutoColor_1_in_10 = NULL;
main_AutoColor_1_out_1 = NULL;
main_ShowBox_1_out_1 = NULL;
main_ShowConnections_1_out_1 = NULL;
main_Collect_1_out_1 = NULL;
macro Image(
        id,
        object,
        where,
        useVector,
        to,
        from,
        width,
        resolution,
        aspect,
        up,
        viewAngle,
        perspective,
        options,
        buttonState = 1,
        buttonUpApprox = "none",
        buttonDownApprox = "none",
        buttonUpDensity = 1,
        buttonDownDensity = 1,
        renderMode = 0,
        defaultCamera,
        reset,
        backgroundColor,
        throttle,
        RECenable = 0,
        RECfile,
        RECformat,
        RECresolution,
        RECaspect,
        AAenable = 0,
        AAlabels,
        AAticks,
        AAcorners,
        AAframe,
        AAadjust,
        AAcursor,
        AAgrid,
        AAcolors,
        AAannotation,
        AAlabelscale,
        AAfont,
        interactionMode,
        title,
        AAxTickLocs,
        AAyTickLocs,
        AAzTickLocs,
        AAxTickLabels,
        AAyTickLabels,
        AAzTickLabels,
        webOptions) -> (
        object,
        camera,
        where)
{
    ImageMessage(
        id,
        backgroundColor,
        throttle,
        RECenable,
        RECfile,
        RECformat,
        RECresolution,
        RECaspect,
        AAenable,
        AAlabels,
        AAticks,
        AAcorners,
        AAframe,
        AAadjust,
        AAcursor,
        AAgrid,
        AAcolors,
        AAannotation,
        AAlabelscale,
        AAfont,
        AAxTickLocs,
        AAyTickLocs,
        AAzTickLocs,
        AAxTickLabels,
        AAyTickLabels,
        AAzTickLabels,
        interactionMode,
        title,
        renderMode,
        buttonUpApprox,
        buttonDownApprox,
        buttonUpDensity,
        buttonDownDensity) [instance: 1, cache: 1];
    autoCamera =
        AutoCamera(
            object,
            "front",
            object,
            resolution,
            aspect,
            [0,1,0],
            perspective,
            viewAngle,
            backgroundColor) [instance: 1, cache: 1];
    realCamera =
        Camera(
            to,
            from,
            width,
            resolution,
            aspect,
            up,
            perspective,
            viewAngle,
            backgroundColor) [instance: 1, cache: 1];
    coloredDefaultCamera =
       UpdateCamera(defaultCamera,
            background=backgroundColor) [instance: 1, cache: 1];
    nullDefaultCamera =
        Inquire(defaultCamera,
            "is null + 1") [instance: 1, cache: 1];
    resetCamera =
        Switch(
            nullDefaultCamera,
            coloredDefaultCamera,
            autoCamera) [instance: 1, cache: 1];
    resetNull =
        Inquire(
            reset,
            "is null + 1") [instance: 2, cache: 1];
    reset =
        Switch(
            resetNull,
            reset,
            0) [instance: 2, cache: 1];
    whichCamera =
        Compute(
            "($0 != 0 || $1 == 0) ? 1 : 2",
            reset,
            useVector) [instance: 1, cache: 1];
    camera = Switch(
            whichCamera,
            resetCamera,
            realCamera) [instance: 3, cache: 1];
    AAobject =
        AutoAxes(
            object,
            camera,
            AAlabels,
            AAticks,
            AAcorners,
            AAframe,
            AAadjust,
            AAcursor,
            AAgrid,
            AAcolors,
            AAannotation,
            AAlabelscale,
            AAfont,
            AAxTickLocs,
            AAyTickLocs,
            AAzTickLocs,
            AAxTickLabels,
            AAyTickLabels,
            AAzTickLabels) [instance: 1, cache: 1];
    switchAAenable = Compute("$0+1",
           AAenable) [instance: 2, cache: 1];
    object = Switch(
           switchAAenable,
           object,
           AAobject) [instance:4, cache: 1];
    SWapproximation_options =
        Switch(
            buttonState,
            buttonUpApprox,
            buttonDownApprox) [instance: 5, cache: 1];
    SWdensity_options =
        Switch(
            buttonState,
            buttonUpDensity,
            buttonDownDensity) [instance: 6, cache: 1];
    HWapproximation_options =
        Format(
            "%s,%s",
            buttonDownApprox,
            buttonUpApprox) [instance: 1, cache: 1];
    HWdensity_options =
        Format(
            "%d,%d",
            buttonDownDensity,
            buttonUpDensity) [instance: 2, cache: 1];
    switchRenderMode = Compute(
           "$0+1",
           renderMode) [instance: 3, cache: 1];
    approximation_options = Switch(
           switchRenderMode,
            SWapproximation_options,
           HWapproximation_options) [instance: 7, cache: 1];
    density_options = Switch(
           switchRenderMode,
            SWdensity_options,
            HWdensity_options) [instance: 8, cache: 1];
    renderModeString = Switch(
            switchRenderMode,
            "software",
            "hardware")[instance: 9, cache: 1];
    object_tag = Inquire(
            object,
            "object tag")[instance: 3, cache: 1];
    annoted_object =
        Options(
            object,
            "send boxes",
            0,
            "cache",
            1,
            "object tag",
            object_tag,
            "ddcamera",
            whichCamera,
            "rendering approximation",
            approximation_options,
            "render every",
            density_options,
            "button state",
            buttonState,
            "rendering mode",
            renderModeString) [instance: 1, cache: 1];
    RECresNull =
        Inquire(
            RECresolution,
            "is null + 1") [instance: 4, cache: 1];
    ImageResolution =
        Inquire(
            camera,
            "camera resolution") [instance: 5, cache: 1];
    RECresolution =
        Switch(
            RECresNull,
            RECresolution,
            ImageResolution) [instance: 10, cache: 1];
    RECaspectNull =
        Inquire(
            RECaspect,
            "is null + 1") [instance: 6, cache: 1];
    ImageAspect =
        Inquire(
            camera,
            "camera aspect") [instance: 7, cache: 1];
    RECaspect =
        Switch(
            RECaspectNull,
            RECaspect,
            ImageAspect) [instance: 11, cache: 1];
    switchRECenable = Compute(
          "$0 == 0 ? 1 : (($2 == $3) && ($4 == $5)) ? ($1 == 1 ? 2 : 3) : 4",
            RECenable,
            switchRenderMode,
            RECresolution,
            ImageResolution,
            RECaspect,
           ImageAspect) [instance: 4, cache: 1];
    NoRECobject, RECNoRerenderObject, RECNoRerHW, RECRerenderObject = 
Route(switchRECenable, annoted_object);
    Display(
        NoRECobject,
        camera,
        where,
        throttle) [instance: 1, cache: 1];
    image =
        Render(
            RECNoRerenderObject,
            camera) [instance: 1, cache: 1];
    Display(
        image,
        NULL,
        where,
        throttle) [instance: 2, cache: 1];
    WriteImage(
        image,
        RECfile,
        RECformat) [instance: 1, cache: 1];
    rec_where = Display(
        RECNoRerHW,
        camera,
        where,
        throttle) [instance: 1, cache: 0];
    rec_image = ReadImageWindow(
        rec_where) [instance: 1, cache: 1];
    WriteImage(
        rec_image,
        RECfile,
        RECformat) [instance: 1, cache: 1];
    RECupdateCamera =
      UpdateCamera(
          camera,
          resolution=RECresolution,
          aspect=RECaspect) [instance: 2, cache: 1];
    Display(
        RECRerenderObject,
        camera,
        where,
        throttle) [instance: 1, cache: 1];
    RECRerenderObject =
      ScaleScreen(
          RECRerenderObject,
          NULL,
          RECresolution,
          camera) [instance: 1, cache: 1];
    image =
        Render(
            RECRerenderObject,
            RECupdateCamera) [instance: 2, cache: 1];
    WriteImage(
        image,
        RECfile,
        RECformat) [instance: 2, cache: 1];
}
main_Image_1_in_1 = "Image_1";
main_Image_1_in_3 = "X24,,";
main_Image_1_in_4 = 1;
main_Image_1_in_5 = [0 0 1];
main_Image_1_in_6 = [6.75785 0.213234 6.46853];
main_Image_1_in_7 = 4.66014;
main_Image_1_in_8 = 640;
main_Image_1_in_9 = 0.750781;
main_Image_1_in_10 = [0.413466 0.73344 -0.539548];
main_Image_1_in_11 = NULL;
main_Image_1_in_12 = 0;
main_Image_1_in_13 = NULL;
main_Image_1_in_14 = 1;
main_Image_1_in_15 = NULL;
main_Image_1_in_16 = NULL;
main_Image_1_in_17 = 1;
main_Image_1_in_18 = 1;
main_Image_1_in_19 = 1;
main_Image_1_in_20 = NULL;
main_Image_1_in_21 = NULL;
main_Image_1_in_22 = NULL;
main_Image_1_in_23 = NULL;
main_Image_1_in_25 = NULL;
main_Image_1_in_26 = NULL;
main_Image_1_in_27 = NULL;
main_Image_1_in_28 = NULL;
main_Image_1_in_29 = NULL;
main_Image_1_in_30 = NULL;
main_Image_1_in_31 = NULL;
main_Image_1_in_32 = NULL;
main_Image_1_in_33 = NULL;
main_Image_1_in_34 = NULL;
main_Image_1_in_35 = NULL;
main_Image_1_in_36 = NULL;
main_Image_1_in_37 = NULL;
main_Image_1_in_38 = NULL;
main_Image_1_in_39 = NULL;
main_Image_1_in_40 = NULL;
main_Image_1_in_41 = "none";
main_Image_1_in_42 = NULL;
main_Image_1_in_43 = NULL;
main_Image_1_in_44 = NULL;
main_Image_1_in_45 = NULL;
main_Image_1_in_46 = NULL;
main_Image_1_in_47 = NULL;
main_Image_1_in_48 = NULL;
main_Image_1_in_49 = NULL;
main_SetGlobal_1_in_3 = NULL;
Executive("product version 4 1 3");
$sync
main();

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