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| author | Mattias Andrée <maandree@kth.se> | 2017-07-03 14:30:44 +0200 |
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| committer | Mattias Andrée <maandree@kth.se> | 2017-07-03 14:30:44 +0200 |
| commit | 56ed14063c8b2c82d5ea0652028f47f76cb710f0 (patch) | |
| tree | 7a156516993dfed31a6356e36d5c5e692605963c /man/blind-square-gradient.1 | |
| parent | blind-spiral-gradient: add support for superelliptic sprials (diff) | |
| download | blind-56ed14063c8b2c82d5ea0652028f47f76cb710f0.tar.gz blind-56ed14063c8b2c82d5ea0652028f47f76cb710f0.tar.bz2 blind-56ed14063c8b2c82d5ea0652028f47f76cb710f0.tar.xz | |
Document blind-coordinate-field, blind-*-gradient, and blind-*-wave (sinc still pending), and sinus => sine
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'man/blind-square-gradient.1')
| -rw-r--r-- | man/blind-square-gradient.1 | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/man/blind-square-gradient.1 b/man/blind-square-gradient.1 new file mode 100644 index 0000000..6345a6e --- /dev/null +++ b/man/blind-square-gradient.1 @@ -0,0 +1,63 @@ +.TH BLIND-SQUARE-GRADIENT 1 blind +.SH NAME +blind-square-gradient - Generate a video with a square gradient +.SH SYNOPSIS +.B blind-square-gradient +[-b] +-w +.I width +-h +.I height +.SH DESCRIPTION +.B blind-square-gradient +prints a video with a square gradient to stdout, +parameters for each from is read from each frame +in stdin. The gradient is stored in all channels +of the video. +.P +The video in stdin must contain exactly 2 or 3 +pixels per frame. The first pixel shall point to +the beginning of the gradient (where the value is +0) and the second pixel shall point to the end of +the gradient (where the value is 1). In these +pixels, the value of the first channel specifies +the X-position and the value of the second +channel specifies Y-position, the other channels +are ignored. +.P +If there is a third pixel, in frames in stdin, +the value of the second channel (the Y channel) +is used to modify the shape of the square, making +it rectangular; the other channels are ignored. +The axis perpendicular to the vector between +the beginning and end of the gradient is divided +by this value. +.SH NOTES +Pixels after the end of the gradient have values +larger than 1. +.BR blind-*-wave (1) +commands can be used to put all values between +0 and 1. +.SH OPTIONS +.TP +.BR -w " "\fIwidth\fP +The width of the video, in pixels. +.TP +.BR -h " "\fIheight\fP +The height of the video, in pixels. +.SH SEE ALSO +.BR blind (7), +.BR blind-from-text (7), +.BR blind-double-sine-wave (1), +.BR blind-round-wave (1), +.BR blind-sawtooth-wave (1), +.BR blind-sinc-wave (1), +.BR blind-sine-wave (1), +.BR blind-triangular-wave (1), +.BR blind-cone-gradient (1), +.BR blind-linear-gradient (1), +.BR blind-radial-gradient (1), +.BR blind-spiral-gradient (1) +.SH AUTHORS +Mattias Andrée +.RI < maandree@kth.se > |