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Lessons on how to use UltimaSerial
Properties: ChartDirection, ChartType, ColorDepth, ColodrScale, ScalingMethod, Data, Key
Methods: Chart, Copy2Clipboard, ChartNow
Event: CrossHair
ChartDirection: Direction of the waterfall flow
uwR2L: From right to left (Not available for 3D chart)
uwSlope: 45 degree from lower left corner to upper right
uwB2T: From bottom to top
uwT2B: From top to bottom
uwNSlope: -45 degree from upper left corner to lower right
ColorScale (index) = OLE_COLOR: Customize the color scale
The maximum color scale has 512 members, but only members from index 0 to ColorDepth -1 are used in the chart.
UltimaWaterfall.ColorScale(0)=&HFF0000
ChartType: Waterfall stype
uw3D: 3D waterfall
uw2D: 2D waterfall
ColorDepth: Translated color depth for data (default 64).
For 2D waterfall chart, the color of a data is ColorScale(data * ColorDepth /32768), where a negative number is treated as zero
For 3D waterfall chart, the height of a data is data*ColorDepth/32768, where a negative number is treated as zero
ScalingMethod: Color scaling method
Scaling Data =0 Data=32767 uwRGB: Red Blue uwBGR Blue Red uwBW Black White uwWB White Black uwB White Blue uwG White Green uwR White Red
Data (index): Instead of using Chart an array-type variant, you can use the combination of Data and ChartNow. Use Data to enter single data point at a time, when all data points are entered, use ChartNow to paint a new frame. Please use VB sample waterfall2 as reference
Chart (variant): the variant has to be one-dimensional 16-bit short integer array. Only the positive number will be charted. Please use VB sample uwaterfall as reference
Here is a simple VC++ sample to set up a 16-bit short integer array PowerSpectrum:
VARIANT PowerSpectrum;
VariantInit(&PowerSpectrum);
SAFEARRAY * psa;
SAFEARRAYBOUND rgsabound[2];
rgsabound[0].lLbound=0;
rgsabound[0].cElements=256;
psa=SafeArrayCreate(VT_I2,1,rgsabound);
short * pshort=(short *)psa->pvData;
PowerSpectrum.vt=VT_I2+VT_ARRAY;
PowerSpectrum.parray=psa;
//fill the array of pshort[];
m_ultimawaterfall.Chart(PowerSpectrum);
Copy2Clipboard: Copy the current image to the clipboard. This method is offered as a bonus to users with paid registration
ChartNow: Use the data entered via Data (n) to paint a new frame
Key: UltimaWaterfall displays an ad-line at the upper left corner of the screen unless it is registered. Once you register UltimaWaterfall, enter it via this property before invoking Chart method.
UltimaWaterfall .Key = "T1c2f345" 'The key to enable UltimaWaterfall, assuming T1c2f345 is your superkey
CrossHair (x, y) : reports the coordination of the mouse button movement
Last update: 04/21/08
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