blind

suckless command-line video editing utility
git clone git://git.suckless.org/blind
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blind-linear-gradient.1 (1584B)


      1 .TH BLIND-LINEAR-GRADIENT 1 blind
      2 .SH NAME
      3 blind-linear-gradient - Generate a video with a linear gradient
      4 .SH SYNOPSIS
      5 .B blind-linear-gradient
      6 [-b]
      7 -w
      8 .I width
      9 -h
     10 .I height
     11 .SH DESCRIPTION
     12 .B blind-linear-gradient
     13 prints a video with a linear gradient to stdout,
     14 parameters for each from is read from each frame
     15 in stdin. The gradient is stored in all channels
     16 of the video.
     17 .P
     18 The video in stdin must contain exactly 2 pixels
     19 per frame. The first pixel shall point to the
     20 beginning of the gradient (where the value is 0)
     21 and the second pixel shall point to the end of
     22 the gradient (where the value is 1). In these
     23 pixels, the value of the first channel specifies
     24 the X-position and the value of the second
     25 channel specifies Y-position, the other channels
     26 are ignored.
     27 .SH NOTES
     28 Pixels before the beginning of the gradient have
     29 negative values, and pixels after the end of the
     30 gradient have values larger than 1.
     31 .BR blind-*-wave (1)
     32 commands can be used to put all values between
     33 0 and 1.
     34 .SH OPTIONS
     35 .TP
     36 .B -b
     37 Create a bilinear gradient.
     38 .TP
     39 .BR -w " "\fIwidth\fP
     40 The width of the video, in pixels.
     41 .TP
     42 .BR -h " "\fIheight\fP
     43 The height of the video, in pixels.
     44 .SH SEE ALSO
     45 .BR blind (7),
     46 .BR blind-from-text (7),
     47 .BR blind-cone-gradient (1),
     48 .BR blind-radial-gradient (1),
     49 .BR blind-spiral-gradient (1),
     50 .BR blind-square-gradient (1),
     51 .BR blind-double-sine-wave (1),
     52 .BR blind-round-wave (1),
     53 .BR blind-sawtooth-wave (1),
     54 .BR blind-sinc-wave (1),
     55 .BR blind-sine-wave (1),
     56 .BR blind-triangular-wave (1),
     57 .BR blind-spectrum (1)
     58 .SH AUTHORS
     59 Mattias Andrée
     60 .RI < maandree@kth.se >