gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1 (Operator)
Name
gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1 — Create a rectangle parallel to the coordinate axes.
Signature
void GenRectangle1(HObject* Rectangle, const HTuple& Row1, const HTuple& Column1, const HTuple& Row2, const HTuple& Column2)
void HRegion::HRegion(const HTuple& Row1, const HTuple& Column1, const HTuple& Row2, const HTuple& Column2)
void HRegion::HRegion(double Row1, double Column1, double Row2, double Column2)
void HRegion::GenRectangle1(const HTuple& Row1, const HTuple& Column1, const HTuple& Row2, const HTuple& Column2)
void HRegion::GenRectangle1(double Row1, double Column1, double Row2, double Column2)
static void HOperatorSet.GenRectangle1(out HObject rectangle, HTuple row1, HTuple column1, HTuple row2, HTuple column2)
public HRegion(HTuple row1, HTuple column1, HTuple row2, HTuple column2)
public HRegion(double row1, double column1, double row2, double column2)
void HRegion.GenRectangle1(HTuple row1, HTuple column1, HTuple row2, HTuple column2)
void HRegion.GenRectangle1(double row1, double column1, double row2, double column2)
Description
The operator gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1 generates one or more rectangles parallel
to the coordinate axes which are described by the upper left corner
(Row1Row1Row1Row1row1, Column1Column1Column1Column1column1) and the lower right corner
(Row2Row2Row2Row2row2, Column2Column2Column2Column2column2).
More than one region can be created by passing a tuple of corner points.
The coordinate system runs from (0,0) (upper left corner) to
(Width-1,Height-1). See get_systemget_systemGetSystemGetSystemGetSystem
and reset_obj_dbreset_obj_dbResetObjDbResetObjDbResetObjDb in this context.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Parameters
RectangleRectangleRectangleRectanglerectangle (output_object) region(-array) → objectHRegionHRegionHobject *
Created rectangle.
Row1Row1Row1Row1row1 (input_control) rectangle.origin.y(-array) → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Line of upper left corner point.
Default value: 30.0
Suggested values: 0.0, 10.0, 20.0, 50.0, 100.0, 200.0
Typical range of values:
Row1
Row1
Row1
Row1
row1
(lin)
Minimum increment: 1.0
Recommended increment: 10.0
Column1Column1Column1Column1column1 (input_control) rectangle.origin.x(-array) → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Column of upper left corner point.
Default value: 20.0
Suggested values: 0.0, 10.0, 20.0, 50.0, 100.0, 200.0
Typical range of values:
Column1
Column1
Column1
Column1
column1
(lin)
Minimum increment: 1.0
Recommended increment: 10.0
Row2Row2Row2Row2row2 (input_control) rectangle.corner.y(-array) → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Line of lower right corner point.
Default value: 100.0
Suggested values: 10.0, 20.0, 50.0, 100.0, 200.0, 300.0, 400.0, 500.0, 511.0
Typical range of values:
Row2
Row2
Row2
Row2
row2
(lin)
Minimum increment: 1.0
Recommended increment: 10.0
Restriction: Row2 >= Row1
Column2Column2Column2Column2column2 (input_control) rectangle.corner.x(-array) → HTupleHTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Column of lower right corner point.
Default value: 200.0
Suggested values: 10.0, 20.0, 50.0, 100.0, 200.0, 300.0, 400.0, 500.0, 511.0
Typical range of values:
Column2
Column2
Column2
Column2
column2
(lin)
Minimum increment: 1.0
Recommended increment: 10.0
Restriction: Column2 >= Column1
Example (HDevelop)
* Contrast improvement in a rectangular region of interest
dev_open_window (0, 0, 512, 512, 'black', WindowHandle)
read_image(Image,'mreut')
dev_display (Image)
draw_rectangle1(WindowHandle,Row1,Column1,Row2,Column2)
gen_rectangle1(Rectangle,Row1,Column1,Row2,Column2)
reduce_domain(Image,Rectangle,Mask)
emphasize(Mask,Emphasize,9,9,1.0)
dev_display (Emphasize)
Result
If the parameter values are correct, the operator gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1
returns the value 2 (H_MSG_TRUE).
Otherwise an exception is raised.
The clipping according to the current image format is set via the
operator set_system('clip_region',<'true'/'false'>)set_system("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">)SetSystem("clip_region",<"true"/"false">).
Possible Successors
paint_regionpaint_regionPaintRegionPaintRegionPaintRegion,
reduce_domainreduce_domainReduceDomainReduceDomainReduceDomain
Alternatives
gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2,
gen_region_polygongen_region_polygonGenRegionPolygonGenRegionPolygonGenRegionPolygon,
fill_upfill_upFillUpFillUpFillUp,
gen_region_runsgen_region_runsGenRegionRunsGenRegionRunsGenRegionRuns,
gen_region_pointsgen_region_pointsGenRegionPointsGenRegionPointsGenRegionPoints,
gen_region_linegen_region_lineGenRegionLineGenRegionLineGenRegionLine
See also
draw_rectangle1draw_rectangle1DrawRectangle1DrawRectangle1DrawRectangle1,
reduce_domainreduce_domainReduceDomainReduceDomainReduceDomain,
smallest_rectangle1smallest_rectangle1SmallestRectangle1SmallestRectangle1SmallestRectangle1
Module
Foundation