ImageGear for C and C++ on Windows v19.0
IG_ISIS_TAG_ORIENTATION
| API Reference Guide > ISIS Component API Reference > ISIS Component Tags Reference > Image Interpretation Tags > IG_ISIS_TAG_ORIENTATION |
Orientation of the image. 0x0112 ∙ 274
IG_ISIS_TAG_ORIENTATION describes the orientation of the image with respect to rows and columns.
IG_ISIS_TAG_TYPE_SHORT
PIXFPACK.
IG_ISIS_TAG_ORIENTATION can contain any one of the following values:
| ISIS Value | TIFF Value | Defined Constant | Meaning |
|---|---|---|---|
| 1 | 1 | IG_ISIS_ORIENTATION_PORT | Portrait (0 degrees). The 0th row represents the visual top of the image and the 0th column represents the visual left side. |
| 2 | 8 | IG_ISIS_ORIENTATION_LAND | Landscape (90 degrees ccw). The 0th row represents the visual left side of the image and the 0th column represents the visual bottom. |
| 3 | 3 | IG_ISIS_ORIENTATION_180 | Upside down portrait (180 degrees ccw). The 0th row represents the visual bottom of the image and the 0th column represents the visual right side. |
| 4 | 6 | IG_ISIS_ORIENTATION_270 | Upside down landscape (270 degrees ccw). The 0th row represents the visual right side of the image, and the 0th column represents the visual top. |
| 5 | 2 | IG_ISIS_ORIENTATION_PORTM | Portrait mirrored. The 0th row represents the visual top of the image, and the 0th column represents the visual right side. |
| 6 | 5 | IG_ISIS_ORIENTATION_LANDM | Landscape mirrored. The 0th row represents the visual left side of the image, and the 0th column represents the visual top. |
| 7 | 4 | IG_ISIS_ORIENTATION_180M | Upside down portrait mirrored. The 0th row represents the visual bottom of the image, and the 0th column represents the visual left side. This is the orientation in which Windows BMP files are stored. |
| 8 | 7 | IG_ISIS_ORIENTATION_270M | Upside down landscape mirrored. The 0th row represents the visual right side of the image, and the 0th column represents the visual bottom. |