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SKYDRAWING

This library handles exportable drawings like PDF or DXF.

Drawing​

Drawings are defined as a collection of pages containing layouts. Create a drawing as:

const drawing = new SKYDRAWING.Drawing()

However a drawing itself requires:

  • pages to be shown through drawing.addPage().
  • content/layout in pages to be shown through drawing.addContent().

addPage()​

A drawing requires pages, which are used to add the content (as layouts). A drawing with 3 different pages would be like:

drawing.addPage(1, { margin: 10, pageHeight: 210, pageWidth: 297 })
drawing.addPage(2, { margin: 15, pageHeight: 297, pageWidth: 420 })
drawing.addPage(3)

Optional arguments, that are not defined, take the value of the drawing's as default.

Below we have listed the most common page sizes:

const pageSizes = [
  { format: 'A4', pageWidth: 297, pageHeight: 210 },
  { format: 'A3', pageWidth: 420, pageHeight: 297 },
  { format: 'A2', pageWidth: 594, pageHeight: 420 },
  { format: 'A1', pageWidth: 841, pageHeight: 594 },
]

addContent()​

The content of a drawing is nothing more than a layout. In order to add a layout in a drawing, drawing.addContent() has to be used indicating in which page you want to add this layout. Therefore a page needs to exist (i.e. drawing.addPage() needs to be used before). These are the most common examples of use:

  • By using position & scale:
    • position sets the real position of the layout in the page.
    • scale changes the scale of the layout when added to the drawing.
    • showScale shows the label of the scale (e.g. 1:10) below the layout.
    • textSize sets the size of all text presented in the layout, regardless of scale
    drawing.addContent(pageNr1, myLayout, {
      position: new SKYMATH.Vector2D(0.1 * pageWidth, 0.2 * pageHeight),
      scale: 0.1,
      showScale: true,
      textSize: 3,
    })
  • By using position & align:
    • position sets the real position of the layout in the page.
    • align aligns the layout based on the position (if position is used).
    drawing.addContent(pageNr1, myLayout, {
      position: new SKYMATH.Vector2D(0.1 * pageWidth, 0.2 * pageHeight),
      align: {
        horizontal: 'center', // can be: 'left', 'center' or 'right'
        vertical: 'center', // can be: 'top', 'center' or 'bottom'
        ignoreAnnotations: false, // ignores text and dimensions in layouts for positioning
      },
    })
  • By using only align (typically for tables on corners)
    • align aligns the layout based on the drawing page.
    drawing.addContent(pageNr1, myLayout, {
      align: {
        horizontal: 'right', // can be: 'left', 'center' or 'right'
        vertical: 'top', // can be: 'top', 'center' or 'bottom'
      },
    })
  • By using autoscaling within bounds:
    • fitInside autofits a layout within given real drawing-bounds and a list of scales.
    • align sets the layout position according to the bounds (if fitInside is used).
    • scale and scaleLabel are given accordingly (if fitInside is used).
    • textSize sets the size of all text presented in the layout, regardless of scale
    const { scale, scaleLabel } = drawing.addContent(1, layout, {
      fitInside: {
        bounds: new SKYCAD.Bounds2D(new SKYMATH.Vector2D(10, 10), new SKYMATH.Vector2D(0.60 * pageWidth, pageHeight - 10)),
        validScales: [1/10, 1/20, 1/30, ...]
      },
      align: {
        horizontal: 'center',
        vertical: 'center',
        ignoreAnnotations: true,
      },
      textSize,
    })

You can give a custom list of scales in validScales. Otherwise, if it is undefined it takes the values according of the ISO standard of scales. See that scale and scaleLabel can be used for further use (e.g. adding more content with scale or even use scaleLabel for the header later).

A header is presented as a table converted into a layout. Create a simple version of it as:

const dateString = new Date().toISOString().split('T')[0] // simplified date
const headerLayout = SKYDRAWING.generateSimpleHeader({
  date: dateString,
  pageNr: '1 of 1',
  projectId: 'Project Docs',
  quotationId: 'Q14-0198',
  scale: '1 : 20',
  width: 30,
})

This simple version is a layout already, so all the functionalities of the layouts can be used here, such as headerLayout.scaleContent(0.75) and others.

However, you might want to create your own table. To do so, create a header as a table first and then convert it into a layout. As an example wrapped in a function:

function getHeaderLayout() {
  const dateString = new Date().toISOString().split('T')[0] // simplified date
  const table = new SKYCAD.Table({ defaultTextSize: 3 })
  table.addText('1 : 1', 0, 0, { label: 'Scale' })
  table.addText('My coaster', 1, 0, { label: 'Project id' })
  table.addText(dateString, 2, 0, { label: 'Date' })
  table.addText('1 of 1', 3, 0, { label: 'Page' })
  const headerLayout = table.generateLayout()
  return headerLayout
}

Add Header To Page​

drawing.setHeader(1, headerLayout, { anchor: 'bottom-right' })
drawing.setHeader(2, headerLayout, { anchor: 'top-right' })

Only one header can be added to a page. If more tables (ex. BOM or manufacturing lists) are to be added, these should be done through drawing.addContent() instead.

Example​

Below a simple example of a coaster using a circular pattern is presented:

function generateDrawing(component) {
  const drawing = new SKYDRAWING.Drawing()

  // Page
  const firstPage = 1
  drawing.addPage(firstPage, { pageHeight: 210, pageWidth: 297, frame: 'Grid' }) // A4 size

  // Content
  const layout = component.getLayoutForDrawing()
  const dimensionLayout = component.getSketch()
  layout.addLayout(dimensionLayout)
  drawing.addContent(firstPage, layout, { scale: 1, anchor: 'center' })

  // Header
  const dateString = new Date().toISOString().split('T')[0] // simplified date
  const headerLayout = SKYDRAWING.generateSimpleHeader({
    date: dateString,
    pageNr: '1 of 1',
    projectId: 'My coaster',
    scale: '1 : 1',
  })
  headerLayout.scaleContent(0.5)
  drawing.setHeader(firstPage, headerLayout, { anchor: 'bottom-right' })

  return drawing
}

Export​

The drawing can be exported as either PDF or DXF, but the raw data can be extracted directly from the function generateDrawing() used in the DrawingMaker (DRAWING). For example, if the drawing is meant to be used and downloaded in the app, then the drawing could be easily extracted by exporting the component COASTERDRAWING into the app and use the function like:

const drawing = COASTERDRAWING.generateDrawing()

If you want to download the PDF or DXF files, you can check this section