grr | Bare metal wrapper for modern OpenGL | Graphics library
kandi X-RAY | grr Summary
kandi X-RAY | grr Summary
grr aims at providing a thin layer above OpenGL 4.5+, exposing a modern API orientated on Vulkan. The sole purpose of the library is to have a cleaned up API for fast prototyping.
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Community Discussions
Trending Discussions on grr
QUESTION
I am learning to write Object-Oriented Programming in Python and practised the following code. Not sure but I feel that I am writing repetitive code in the inheritance section. Would it be possible to write this code in a better way?
...ANSWER
Answered 2022-Apr-07 at 22:55"Better" is a qualitative term, but if you want to repeat less code, there are several ways you could leverage inheritance further to do so (to some extent).
One idea is to make the speak()
method in each child class call a shared method from the parent class, _speak()
. This has the advantage of better representing that all three child objects have similar underlying behavior.
QUESTION
I am able to use zoom on a single image, and that works well. However, in a more complex app, I have a dynamic UI that the plotting depends on a selectInput()
like this:
ANSWER
Answered 2022-Feb-08 at 23:58Since you used renderUI
, we can add panzoom
after grVizoutput
, like this
QUESTION
please tell what am I doing wrong here the output is repeated
...ANSWER
Answered 2022-Feb-04 at 17:33This loop is wrong:
QUESTION
I'm trying to add type hints to a custom enum.IntEnum with a particular starting value and attributes (discussed here). This is what seems right to me, but not to mypy.
...ANSWER
Answered 2022-Jan-25 at 19:36There might be a better way, but it seems sufficient to provide hints for the two attributes statically.
QUESTION
I'm trying to write some code that will check to see if a string contains any words contained in a list of terms, in order to create a new column in the dataframe.
This is the list of terms:
vehicles <- c('vehicle', 'mazda', 'nissan', 'ford', 'honda', 'chevrolet', 'toyota')
Examples of the strings I'm searching include: "2001 honda civic", "2003 nissan altima", "2005 mazda 5", etc. (these are the asset_name
in the code below).
my simplified code looks like this:
...ANSWER
Answered 2022-Jan-06 at 05:35One approach might be to build a regex alternation of the vehicle terms, and then use grepl
to match:
QUESTION
I have the shiny
app below in which I use a js technique to capture clicks in the app without having to use shiny input elements. It works great but not on nodes as I want to be able to capture nodes and get the node ID.
The logic is the following: I click on "Click me"
text or on the nodes then in Rstudio console I type input$js.node_clicked
. The result should be "one_1" which I can accept ase "one"
corresponds to node and "_1" on clicking sequence. But when I click on nodes I get only "_1" and not the node id "one_1". The logic is from here.
ANSWER
Answered 2021-Dec-22 at 20:02This works like this. You have to use currentTarget
instead of target
. Avoid to include a dot in the input name of Shiny.setInputValue
(or Shiny.onInputChange
, which is the same), because the dot has a special meaning.
QUESTION
In the shiny app below I zoom and reset on a svg file. As you can see in the gif if you click the buttons quickly in succession, the script seems to lose track and resize randomly? In the gif, I click the -
button repeatedly and then at the end press Reset.
ANSWER
Answered 2021-Dec-20 at 19:09That's the same strange bug I encountered the first time. A possible solution is to put the script in the renderUI:
QUESTION
I have the shiny app below in which I use js to add controls to zoom and reset on a svg
file. It was working until the moment I put the output inside another UiOutput.
ANSWER
Answered 2021-Dec-20 at 11:30That's because the elements defined in the renderUI
are not ready yet when the document is ready. A possible technique is to use an interval which will "screen" the document every 100ms, until it finds the element.
QUESTION
I have the shiny
app below in which I want to add controls for pan and zoom like here using the panzoom package. I have added +/-
but what about a reset option? If you know any other package that can do it feel free to do it.
ANSWER
Answered 2021-Dec-17 at 20:21library(shiny)
library(shinyWidgets)
library(DiagrammeR)
library(magrittr)
js <- '
$(document).ready(function(){
var element = document.getElementById("grr");
var instance = panzoom(element);
var z = 1;
$("#zoomout").on("click", function(){
instance.smoothZoom(0, 0, 0.9);
z *= 0.9;
});
$("#zoomin").on("click", function(){
instance.smoothZoom(0, 0, 1.1);
z *= 1.1;
});
$("#reset").on("click", function(){
instance.smoothZoom(0, 0, 1/z);
z = 1;
});
$("#zoomout").on("dblclick", function(){
return false;
});
$("#zoomin").on("dblclick", function(){
return false;
});
});
'
ui <- fluidPage(
tags$head(
tags$script(src = "https://unpkg.com/panzoom@9.4.0/dist/panzoom.min.js"),
tags$script(HTML(js))
),
grVizOutput("grr", width = "100%", height = "90vh"),
actionGroupButtons(
inputIds = c("zoomout", "zoomin", "reset"),
labels = list(icon("minus"), icon("plus"), "Reset"),
status = "primary"
)
)
server <- function(input, output) {
reactives <- reactiveValues()
observe({
reactives$graph <- render_graph(
create_graph() %>%
add_n_nodes(n = 2) %>%
add_edge(
from = 1,
to = 2,
edge_data = edge_data(
value = 4.3
)
)
)
})
output$grr <- renderGrViz(reactives$graph)
}
shinyApp(ui, server)
QUESTION
I have used panzoom
package in order to pan and zoom on my svg file in my shiny app. Is there a way to have controls like this?
ANSWER
Answered 2021-Dec-16 at 20:06Here is a way, but if you click too quickly on the +/- buttons, there's an undesirable effect.
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