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	blind-square-gradient.1 - blind - suckless command-line video editing utility
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	blind-square-gradient.1 (1781B)
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	1 .TH BLIND-SQUARE-GRADIENT 1 blind
	2 .SH NAME
	3 blind-square-gradient - Generate a video with a square gradient
	4 .SH SYNOPSIS
	5 .B blind-square-gradient
	6 -w
	7 .I width
	8 -h
	9 .I height
	10 .SH DESCRIPTION
	11 .B blind-square-gradient
	12 prints a video with a square gradient to stdout,
	13 parameters for each from is read from each frame
	14 in stdin. The gradient is stored in all channels
	15 of the video.
	16 .P
	17 The video in stdin must contain exactly 2 or 3
	18 pixels per frame. The first pixel shall point to
	19 the beginning of the gradient (where the value is
	20 0) and the second pixel shall point to the end of
	21 the gradient (where the value is 1). In these
	22 pixels, the value of the first channel specifies
	23 the X-position and the value of the second
	24 channel specifies Y-position, the other channels
	25 are ignored.
	26 .P
	27 If there is a third pixel, in frames in stdin,
	28 the value of the second channel (the Y channel)
	29 is used to modify the shape of the square, making
	30 it rectangular; the other channels are ignored.
	31 The axis perpendicular to the vector between
	32 the beginning and end of the gradient is divided
	33 by this value.
	34 .SH NOTES
	35 Pixels after the end of the gradient have values
	36 larger than 1.
	37 .BR blind-*-wave (1)
	38 commands can be used to put all values between
	39 0 and 1.
	40 .SH OPTIONS
	41 .TP
	42 .BR -w " "\fIwidth\fP
	43 The width of the video, in pixels.
	44 .TP
	45 .BR -h " "\fIheight\fP
	46 The height of the video, in pixels.
	47 .SH SEE ALSO
	48 .BR blind (7),
	49 .BR blind-from-text (7),
	50 .BR blind-cone-gradient (1),
	51 .BR blind-linear-gradient (1),
	52 .BR blind-radial-gradient (1),
	53 .BR blind-spiral-gradient (1),
	54 .BR blind-double-sine-wave (1),
	55 .BR blind-round-wave (1),
	56 .BR blind-sawtooth-wave (1),
	57 .BR blind-sinc-wave (1),
	58 .BR blind-sine-wave (1),
	59 .BR blind-triangular-wave (1),
	60 .BR blind-spectrum (1)
	61 .SH AUTHORS
	62 Mattias Andrée
	63 .RI < [email protected] >