blind-cone-gradient.1 - blind - suckless command-line video editing utility
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blind-cone-gradient.1 (1693B)
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1 .TH BLIND-CONE-GRADIENT 1 blind
2 .SH NAME
3 blind-cone-gradient - Generate a video with a cone gradient
4 .SH SYNOPSIS
5 .B blind-cone-gradient
6 [-a | -s]
7 -w
8 .I width
9 -h
10 .I height
11 .SH DESCRIPTION
12 .B blind-cone-gradient
13 prints a video with a cone 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 or 3
19 pixels per frame. The first pixel shall point to
20 the beginning of the gradient (where the value is
21 0) 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 .P
28 If there is a third pixel, in frames in stdin, all
29 values in the gradient are multipled by the value
30 in the second channel (the Y channel) of the third
31 pixel in stdin; the rest of the channels in this
32 pixel is ignored.
33 .SH OPTIONS
34 .TP
35 .B -a
36 Make the gradient increase anticlockwise
37 instead of clockwise.
38 .TP
39 .B -s
40 Make the gradient increase symmetrically
41 instead of clockwise.
42 .TP
43 .BR -w " "\fIwidth\fP
44 The width of the video, in pixels.
45 .TP
46 .BR -h " "\fIheight\fP
47 The height of the video, in pixels.
48 .SH SEE ALSO
49 .BR blind (7),
50 .BR blind-from-text (7),
51 .BR blind-linear-gradient (1),
52 .BR blind-radial-gradient (1),
53 .BR blind-spiral-gradient (1),
54 .BR blind-square-gradient (1),
55 .BR blind-double-sine-wave (1),
56 .BR blind-round-wave (1),
57 .BR blind-sawtooth-wave (1),
58 .BR blind-sinc-wave (1),
59 .BR blind-sine-wave (1),
60 .BR blind-triangular-wave (1),
61 .BR blind-spectrum (1)
62 .SH AUTHORS
63 Mattias Andrée
64 .RI < maandree@kth.se >