Visualize an EnergyPlus Model Geometry and Simulation Results

IdfViewer is a class designed to view geometry of an Idf and map simulation results to the geometries.

idf_viewer(geometry)

Arguments

geometry: An IdfGeometry object. geometry can also be a path to an IDF file or an Idf object. In this case, an IdfGeometry is created based on input Idf.

Value

An IdfViewer object.

Author

Hongyuan Jia

Methods

Public methods

IdfViewer$new()
IdfViewer$parent()
IdfViewer$geometry()
IdfViewer$device()
IdfViewer$background()
IdfViewer$viewpoint()
IdfViewer$win_size()
IdfViewer$mouse_mode()
IdfViewer$axis()
IdfViewer$ground()
IdfViewer$wireframe()
IdfViewer$x_ray()
IdfViewer$render_by()
IdfViewer$show()
IdfViewer$focus()
IdfViewer$close()
IdfViewer$snapshot()
IdfViewer$print()

Method `new()`

Create an IdfViewer object

Usage

IdfViewer$new(geometry)

Arguments

geometry: An IdfGeometry object. geometry can also be a path to an IDF file or an Idf object. In this case, an IdfGeometry is created based on input Idf.

Returns

An IdfViewer object.

Examples

\dontrun{
# example model shipped with eplusr from EnergyPlus v8.8
path_idf <- system.file("extdata/1ZoneUncontrolled.idf", package = "eplusr") # v8.8

# create from an Idf object
idf <- read_idf(path_idf, use_idd(8.8, "auto"))
viewer <- idf_viewer(idf)
viewer <- IdfViewer$new(idf)

# create from an IDF file
viewer <- idf_viewer(path_idf)
viewer <- IdfViewer$new(path_idf)
}

Method `parent()`

Get parent Idf object

Usage

IdfViewer$parent()

Details

$parent() returns the parent Idf object of current IdfGeometry object.

Returns

An Idf object.

Examples

\dontrun{
viewer$parent()
}

Method `geometry()`

Get parent IdfGeometry object

Usage

IdfViewer$geometry()

Details

$geometry() returns the parent IdfGeometry object.

Returns

An IdfGeometry object.

Examples

\dontrun{
viewer$geometry()
}

Method `device()`

Get Rgl device ID

Usage

IdfViewer$device()

Details

If Rgl is used, the Rgl device ID is returned. If WebGL is used, the elementID is returned. If no viewer has been open, NULL is returned.

Returns

A number or NULL

Examples

\dontrun{
viewer$device()
}

Method `background()`

Set the background color of the scene

Usage

IdfViewer$background(color = "white")

Arguments

color: A single string giving the background color. Default: white.

Examples

\dontrun{
viewer$background("blue")
}

Method `viewpoint()`

Set the viewpoint orientation of the scene

Usage

IdfViewer$viewpoint(
  look_at = "iso",
  theta = NULL,
  phi = NULL,
  fov = NULL,
  zoom = NULL,
  scale = NULL
)

Arguments

look_at: A single string indicating a standard view. If specified, theta and phi will be ignored. Should be one of c("top", "bottom", "left", "right", "front", "back", "iso"). look_at will be ignored if any of theta and phi is specified. Default: iso (i.e. isometric).
theta: Theta in polar coordinates. If NULL, no changes will be made to current scene. Default: NULL.
phi: Phi in polar coordinates. If NULL, no changes will be made to current scene. Default: NULL.
fov: Field-of-view angle in degrees. If 0, a parallel or orthogonal projection is used. If NULL, no changes will be made to current scene. Default: NULL.
zoom: Zoom factor. If NULL, no changes will be made to current scene. Default: NULL.
scale: A numeric vector of length 3 giving the rescaling to apply to each axis. If NULL, no changes will be made to current scene. Default: NULL.

Examples

\dontrun{
viewer$viewpoint()
}

Method `win_size()`

Set the window size

Usage

IdfViewer$win_size(left = 0, top = 0, right = 600, bottom = 600)

Arguments

left, top, right, bottom: A single number indicating the pixels of the displayed window. Defaults: 0 (left), 0 (top), 600 (right) and 600 (bottom).

Examples

\dontrun{
viewer$win_size(0, 0, 400, 500)
}

Method `mouse_mode()`

Set the handlers of mouse control

Usage

IdfViewer$mouse_mode(
  left = "trackball",
  right = "pan",
  middle = "fov",
  wheel = "pull"
)

Arguments

left, right, middle: Refer to the buttons on a three button mouse, or simulations of them on other mice. Defaults: "trackball" (left), "pan" (right) and "fov" (middle).
wheel: Refer to the mouse wheel. Default: "pull".

Details

Possible values are:

Mode	Description
"none"	No action
"trackball"	The mouse acts as a virtual trackball. Clicking and dragging rotates the scene
"xAxis", "yAxis", "zAxis"	Like "trackball", but restricted to rotation about one axis
"polar"	The mouse affects rotations by controlling polar coordinates directly
"zoom"	The mouse zooms the display
"fov"	The mouse affects perspective by changing the field of view
"pull"	Rotating the mouse wheel towards the user “ pulls the scene closer”
"push"	The same rotation “pushes the scene away”
"pan"	Pan the camera view vertically or horizontally

Examples

\dontrun{
viewer$mouse_mode()
}

Method `axis()`

Toggle axis in the scene

Usage

IdfViewer$axis(
  add = TRUE,
  expand = 2,
  width = 1.5,
  color = c("red", "green", "blue", "orange"),
  alpha = 1
)

Arguments

add: If TRUE, axis is added to the scene. If FALSE, axis is removed in the scene.
expand: A single number giving the factor to expand based on the largest X, Y and Z coordinate values. Default: 2.0.
width: A number giving the line width of axis. width * 2 is used for the true north axis. Default: 1.5.
color: A character of length 4 giving the color of X, Y, Z and true north axis. Default: c("red", "green", "blue", "orange").
alpha: A number giving the alpha value of axis. Default: 1.0.

Details

$axis() adds or removes X, Y and Z axis in the scene.

Returns

A single logical value as add.

Examples

\dontrun{
viewer$axis()
}

Method `ground()`

Toggle ground in the scene

Usage

IdfViewer$ground(add = TRUE, expand = 1.02, color = "#EDEDEB", alpha = 1)

Arguments

add: If TRUE, ground is added to the scene. If FALSE, ground is removed in the scene.
expand: A single number giving the factor to expand based on the largest X, Y and Z coordinate values. Default: 1.02.
color: A string giving the color of ground. Default: #EDEDEB.
alpha: A number giving the alpha value of ground. Default: 1.0.

Details

$ground() adds or removes ground in the scene.

Returns

A single logical value as add.

Examples

\dontrun{
viewer$ground()
}

Method `wireframe()`

Toggle wireframe

Usage

IdfViewer$wireframe(add = TRUE, width = 1.5, color = "black", alpha = 1)

Arguments

add: If TRUE, wireframe is turned on. If FALSE, wireframe is turned off. Default: TRUE.
width: A number giving the line width of axis. Default: 1.5.
color: A character of length 3 giving the color of X, Y and Z axis. Default: c("red", "green", "blue").
alpha: A number giving the alpha value of axis. Default: 1.0.

Details

$wireframe() turns on/off wireframes.

Returns

A single logical value as add.

Examples

\dontrun{
viewer$wireframe()
}

Method `x_ray()`

Toggle X-ray face style

Usage

IdfViewer$x_ray(on = TRUE)

Arguments

on: If TRUE, X-ray is turned on. If FALSE, X-ray is turned off. Default: TRUE.

Details

$x_ray() turns on/off X-ray face style.

Returns

A single logical value as on.

Examples

\dontrun{
viewer$x_ray()
}

Method `render_by()`

Set render style

Usage

IdfViewer$render_by(type = "surface_type")

Arguments

type

A single string giving the render style. Should be one of:

"surface_type": Default. Render the model by surface type model. Walls, roofs, windows, doors, floors, and shading surfaces will have unique colors.
"boundary": Render the model by outside boundary condition. Only surfaces that have boundary conditions will be rendered with a color. All other surfaces will be white.
"construction": Render the model by surface constructions.
"zone": Render the model by zones assigned.
"space": Render the model by spaces assigned.
"normal": Render the model by surface normal. The outside face of a heat transfer face will be rendered as white and the inside face will be rendered as red.

Details

$render_by() sets the render style of geometries.

Returns

A same value as style.

Examples

\dontrun{
viewer$render_by()
}

Method `show()`

Show Idf geometry

Usage

IdfViewer$show(
  type = "all",
  zone = NULL,
  space = NULL,
  surface = NULL,
  width = 1.5,
  dayl_color = "red",
  dayl_size = 5
)

Arguments

type

A character vector of geometry components to show. If "all" (default), all geometry components will be shown. If NULL, no geometry faces will be shown. Otherwise, should be a subset of following:

"floor"
"wall"
"roof"
"window"
"door"
"shading"
"daylighting"

zone

A character vector of names or an integer vector of IDs of zones in current Idf to show. If NULL, no subsetting is performed.

space

A character vector of names or an integer vector of IDs of spaces in current Idf to show. If NULL, no subsetting is performed.

surface

A character vector of names or an integer vector of IDs of surfaces in current Idf to show. If NULL, no subsetting is performed.

width

The line width for the geometry components. Default: 1.5.

dayl_color, dayl_size

The color and size of daylighting reference points. Defaults: "red" (dayl_color) and 5 (dayl_size).

Returns

The IdfViewer itself, invisibly.

Examples

\dontrun{
viewer$show()
}

Method `focus()`

Bring the scene window to the top

Usage

IdfViewer$focus()

Examples

\dontrun{
viewer$top()
}

Method `close()`

Close the scene window

Usage

IdfViewer$close()

Examples

\dontrun{
viewer$close()
}

Method `snapshot()`

Capture and save current rgl view as an image

Usage

IdfViewer$snapshot(filename, webshot = FALSE, ...)

Arguments

filename: A single string specifying the file name. Current supported formats are png, pdf, svg, ps, eps, tex and pgf.
webshot: Whether to use the 'webshot2' package to take the snapshot. For more details, please see rgl::snapshot3d(). Default: FALSE.
...: Arguments to pass to webshot2::webshot().

Details

$snapshot() captures the current rgl view and saves it as an image file to disk using rgl::snapshot3d() and rgl::rgl.postscript().

Returns

A single string of the file path.

Examples

\dontrun{
viewer$show()
viewer$snapshot(tempfile(fileext = ".png"))
}

Method `print()`

Print an IdfViewer object

Usage

IdfViewer$print()

Returns

The IdfViewer itself, invisibly.

Examples

\dontrun{
viewer$print()
}

Examples


## ------------------------------------------------
## Method `IdfViewer$new`
## ------------------------------------------------

if (FALSE) {
# example model shipped with eplusr from EnergyPlus v8.8
path_idf <- system.file("extdata/1ZoneUncontrolled.idf", package = "eplusr") # v8.8

# create from an Idf object
idf <- read_idf(path_idf, use_idd(8.8, "auto"))
viewer <- idf_viewer(idf)
viewer <- IdfViewer$new(idf)

# create from an IDF file
viewer <- idf_viewer(path_idf)
viewer <- IdfViewer$new(path_idf)
}

## ------------------------------------------------
## Method `IdfViewer$parent`
## ------------------------------------------------

if (FALSE) {
viewer$parent()
}

## ------------------------------------------------
## Method `IdfViewer$geometry`
## ------------------------------------------------

if (FALSE) {
viewer$geometry()
}

## ------------------------------------------------
## Method `IdfViewer$device`
## ------------------------------------------------

if (FALSE) {
viewer$device()
}

## ------------------------------------------------
## Method `IdfViewer$background`
## ------------------------------------------------

if (FALSE) {
viewer$background("blue")
}

## ------------------------------------------------
## Method `IdfViewer$viewpoint`
## ------------------------------------------------

if (FALSE) {
viewer$viewpoint()
}

## ------------------------------------------------
## Method `IdfViewer$win_size`
## ------------------------------------------------

if (FALSE) {
viewer$win_size(0, 0, 400, 500)
}

## ------------------------------------------------
## Method `IdfViewer$mouse_mode`
## ------------------------------------------------

if (FALSE) {
viewer$mouse_mode()
}

## ------------------------------------------------
## Method `IdfViewer$axis`
## ------------------------------------------------

if (FALSE) {
viewer$axis()
}

## ------------------------------------------------
## Method `IdfViewer$ground`
## ------------------------------------------------

if (FALSE) {
viewer$ground()
}

## ------------------------------------------------
## Method `IdfViewer$wireframe`
## ------------------------------------------------

if (FALSE) {
viewer$wireframe()
}

## ------------------------------------------------
## Method `IdfViewer$x_ray`
## ------------------------------------------------

if (FALSE) {
viewer$x_ray()
}

## ------------------------------------------------
## Method `IdfViewer$render_by`
## ------------------------------------------------

if (FALSE) {
viewer$render_by()
}

## ------------------------------------------------
## Method `IdfViewer$show`
## ------------------------------------------------

if (FALSE) {
viewer$show()
}

## ------------------------------------------------
## Method `IdfViewer$focus`
## ------------------------------------------------

if (FALSE) {
viewer$top()
}

## ------------------------------------------------
## Method `IdfViewer$close`
## ------------------------------------------------

if (FALSE) {
viewer$close()
}

## ------------------------------------------------
## Method `IdfViewer$snapshot`
## ------------------------------------------------

if (FALSE) {
viewer$show()
viewer$snapshot(tempfile(fileext = ".png"))
}


## ------------------------------------------------
## Method `IdfViewer$print`
## ------------------------------------------------

if (FALSE) {
viewer$print()
}

Visualize an EnergyPlus Model Geometry and Simulation Results

Arguments

Value

See also

Author

Methods

Public methods

Method new()

Usage

Arguments

Returns

Examples

Method parent()

Usage

Details

Returns

Examples

Method geometry()

Usage

Details

Returns

Examples

Method device()

Usage

Details

Returns

Examples

Method background()

Usage

Arguments

Examples

Method viewpoint()

Usage

Arguments

Examples

Method win_size()

Usage

Arguments

Examples

Method mouse_mode()

Usage

Arguments

Details

Examples

Method axis()

Usage

Arguments

Details

Returns

Examples

Method ground()

Usage

Arguments

Details

Returns

Examples

Method wireframe()

Usage

Arguments

Details

Returns

Examples

Method x_ray()

Usage

Arguments

Details

Returns

Examples

Method render_by()

Usage

Arguments

Details

Returns

Examples

Method show()

Usage

Arguments

Returns

Examples

Method focus()

Method `new()`

Method `parent()`

Method `geometry()`

Method `device()`

Method `background()`

Method `viewpoint()`

Method `win_size()`

Method `mouse_mode()`

Method `axis()`

Method `ground()`

Method `wireframe()`

Method `x_ray()`

Method `render_by()`

Method `show()`

Method `focus()`

Method `close()`

Method `snapshot()`

Method `print()`