Quote from luishp on May 1, 2025, 9:04 pm

@lolo

Key Concepts

1. Aspect Ratio

• Definition: The proportion between width and height of an image, typically expressed as a ratio (e.g., 16:9 or 118:60).

• Example: A rectangle that is 118 mm wide and 60 mm high has an aspect ratio of 118 / 60, which simplifies to approximately 1.9667.

2. Image Size

• Definition: The physical dimensions of an image, usually in millimeters (mm), inches, or pixels (depending on context).

• Note: VisualNEO Web operates primarily in pixels, so conversions may be needed.

3. Image Resolution

• Definition: The number of pixels per inch (ppi or dpi). Higher resolution means more detail.

• Use Case: Resolution affects print quality, not screen layout directly. A 300 dpi image will be physically smaller but more detailed than a 72 dpi image of the same pixel dimensions.

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How to Use neoCrop for a 118x60 mm Ratio

If your goal is to enforce this proportion during cropping, you must set the aspect ratio accordingly. Since VisualNEO Web works in pixels and not millimeters, you use the ratio directly:

neoCropSetAspectRatio "MyImage" "118/60"


Alternatively, if initializing the cropper:

neoCropInitializeEx "MyImage" "118/60" "MyContainer" "1"


You may also export a cropped image with a specific resolution using:

neoCropToBase64Png "MyImage" 1180 600 [resultImage]


This would output an image with a resolution of 1180x600 pixels (or any scaled-up value preserving 118:60 ratio)​.

Quote from lolo on May 2, 2025, 10:46 pm

спасибо, я понял
thank you, I understand