| T O P I C R E V I E W |
| TreeNode |
Posted - 11/09/2010 : 11:30:28 AM
Origin Ver. and Service Release: Origin 8, SR6
Operating System: Win XP
Hi,
Im going crazy with adding horizontal and vertical Lines to Layer.
I found the following topic, examples and reference:
Forum topic:
http://www.originlab.com/forum/topic.asp?TOPIC_ID=8152&SearchTerms=GROT_LINE
AddLine example:
http://ocwiki.originlab.com/index.php?title=OriginC:Add_Graph_Object#Line
OriginC Reference
http://ocwiki.originlab.com/index.php?title=Category:GraphObject_%28class%29
But all that didnt make me achieve my aims.
I want to simply add horizontal and vertical Lines to a GraphLayer at definite position,
and with a definite length (width).
I tried to set the properties with the methods offered by the class GraphObject, and I also tried
to set them by updating Property-Theme-Tree -> go.ApplyFormat(tr, true, true);
But in both cases the added Line does not behave as I would expect.
Here is some code, I tried to set line properties with:
void set_line_properties_ex1()
{
GraphLayer gl = Project.ActiveLayer();
GraphObject go = gl.CreateGraphObject(GROT_LINE);
go.Attach = 2; // Attach to Axes, Scale
go.X = 120; // X-Position of Line
go.DX = 200; // Width of the Line
go.Y = -16; // y-Position of Line
Tree tr;
//tr.Root.Span.nVal = 2; // 1 to span over the whole layer
tr.Root.Direction.nVal = LN_HORIZONTAL; // vertical or horizontal
tr.Root.Color.nVal = SYSCOLOR_BLACK;
tr.Root.Width.dVal = 1;
tr.Root.Event.nVal = GRCT_MOVE;
//tr.Root.Script.strVal = strScript; // set script, run it after the Event specified by nExecMode
// Dimensions
//tr.Root.Dimension.Units.nVal = 5;
//tr.Root.Dimension.Left.dVal = 120.0;
//tr.Root.Dimension.Width.dVal = 100.0;
//tr.Root.Dimension.Top.dVal = -14.0;
if( 0 == go.UpdateThemeIDs(tr.Root) ) // 0 means no error
{
bool bRet = go.ApplyFormat(tr, true, true); // return true if applied format successfully
}
printf("X: %f\nY: %f\nDX: %f\nDY: %f\nWidth: %f\nHeight: %f\nTop: %f\nLeft: %f\n",
go.X, go.Y, go.DX, go.DY, go.Width, go.Height, go.Top, go.Left);
tr = go.GetFormat(FPB_ALL, FOB_ALL, true, true);
out_tree(tr);
}
The position and Span of the Line should be attached to the X- and Y-Axis. So related to the DataPlots in the Layer the
line should always have the same position.
Can someone give me an example how to handle GROT_LINE GraphObjects in the way I need, and make me succeed in my business?
I would be very thankful for your help!
|-- TreeNode
...|-- a??
...|-- ha!! |
| 3 L A T E S T R E P L I E S (Newest First) |
| rlewis |
Posted - 11/10/2010 : 2:18:34 PM
Indeed ... OriginLab has quite a few goodies in "Originc\OriginLab" folder ....
It would be very useful if they were to document those functiona and other utilties more fully ... |
| TreeNode |
Posted - 11/10/2010 : 04:50:07 AM
Hi rlewis,
thank you very much for quick reply! The function works fine for me.
I just had to set the parameter bSpan = false, because I dont want a line spanning over whole layer.
bool add_line(Layer& lay, GraphObject& go, double x0=0, double y0 = 0, int nAttach= ATTACH_TO_SCALE, int nDirection = LN_VERTICAL,
bool bSpan=true, bool bPercent = true, double x1=50, double y1 = 50, int nColor = 1, LPCSTR lpcszName = NULL);
Great solution! But why I cant find such functions in help files?
|-- TreeNode
...|-- a??
...|-- ha!! |
| rlewis |
Posted - 11/10/2010 : 02:07:17 AM
There is an OriginLab utility function 'add_line" which may solve your problem ...
As written, the function below will draw a red horizontal line which spans the width of the active graphlayer half way up the y-axis
void DrawHorizontalLine()
{
GraphLayer gL = Project.ActiveLayer();
GraphObject gO;
if(gL.IsValid()==true)
{
string PathToOCFile=GetAppPath(true)+"OriginC\\Originlab\\grobj_utils.c";
if(Project.Compile(PathToOCFile)==true)
{
double x0=gL.X.From;
double x1=gL.X.To;
double y0=gL.Y.From+((gL.Y.To-gL.Y.From)/2.0);
double y1=y0;
int nAttach =2;
string lpcszName="MyLine";
add_line(gL,gO,x0,y0, nAttach,LN_HORIZONTAL,true,false,x1,y1,1,lpcszName);
}
}
}
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