Documentation ¶
Overview ¶
Package dimen implements dimensions and units.
BSD License ¶
Copyright (c) 2017–21, Norbert Pillmayer (norbert@pillmayer.com)
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of this software nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Index ¶
Constants ¶
const Infinity = math.MaxInt32
Infinity is the largest possible dimension
Variables ¶
var DINA4 = Point{210 * MM, 297 * MM}
Some common paper sizes
var DINA5 = Point{148 * MM, 210 * MM}
var Origin = Point{0, 0}
Origin is origin
var USLegal = Point{216 * MM, 357 * MM}
var USLetter = Point{216 * MM, 279 * MM}
Functions ¶
This section is empty.
Types ¶
type Dimen ¶
type Dimen int32
Dimen is a dimension type. Values are in scaled big points (different from TeX).
const ( Zero Dimen = 0 SP Dimen = 1 // scaled point = BP / 65536 BP Dimen = 65536 // big point (PDF) = 1/72 inch PX Dimen = 65536 // "pixels" PT Dimen = 65291 // printers point 1/72.27 inch MM Dimen = 185771 // millimeters CM Dimen = 1857710 // centimeters IN Dimen = 4718592 // inch )
Some pre-defined dimensions
func ParseDimen ¶
ParseDimen parses a string to return a dimension. Syntax is CSS Unit. If a percentage value is given (`80%`), the second return value will be true.
type Point ¶
type Point struct {
X, Y Dimen
}
Point is a point on a page.
TODO see methods in https://golang.org/pkg/image/#Point