imaqOverlayClosedContour
Usage
int imaqOverlayClosedContour(Image* image, const Point* points, int numPoints, const RGBValue* color, DrawMode drawMode, const char* group);
Purpose
Overlays an closed contour onto an image. To make the contour, the function connects each point in the array to the next point in the array, and it connects the last point in the array to the first point in the array.
Image Types Supported
IMAQ_IMAGE_U8, IMAQ_IMAGE_U16, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_COMPLEX, IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL, IMAQ_IMAGE_RGB_U64
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| image | Image* | The image on which to overlay the open contour. |
| points | const Point* | An array of points describing the location and shape of the contour. This parameter is required and cannot be NULL. |
| numPoints | int | The number of points in the array. |
| color | const RGBValue* | The color of the contour. The alpha color channel is not supported. Setting the color to transparent has the same effect as selecting black. This parameter is required and cannot be NULL. |
| drawMode | DrawMode | The mode by which to draw the overlay. IMAQ_DRAW_VALUE and IMAQ_PAINT_VALUE are valid options. |
| group | const char* | The group to which you want to add the overlay. Set this parameter to NULL to add the overlay to the default group. |
Return Value
| Type |
Description |
|---|---|
| int | On success, this function returns a non-zero value. On failure, this function returns 0. To get extended error information, call imaqGetLastError(). |