TftSepiaTransRect()
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TftSepiaTransRect(wOriginX As wTftLibParameter1, wOriginY As wTftLibParameter2, wAreaWidth As wTftLibParameter3, wAreaHeight As wTftLibParameter4, wAlphaColor As wTftLibParameter5)
Apply a sepia filter to a defined rectangular area of the TFT screen with a transparent layer.
|
Parameter |
Description |
|
wOriginX |
X-coordinate of the bottom-left corner of the target area |
|
wOriginY |
Y-coordinate of the bottom-left corner of the target area |
|
wAreaWidth |
Width of the rectangular area to process |
|
wAreaHeight |
Height of the rectangular area to process |
|
wAlphaColor |
Alpha color value used when transparent printing is enabled |
The sepia filter is relatively slow, as it requires reading and rewriting each pixel in the target area.
If the global "TftPixelCheck" flag is enabled, boundary checking is performed:
If the area lies completely outside the visible screen, no processing is applied.
If the area is partially outside, it will be clipped to the visible screen boundaries.
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