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 >