piet | An abstraction for 2D graphics | Graphics library
kandi X-RAY | piet Summary
kandi X-RAY | piet Summary
The Piet project consists of a core crate (piet) which describes a 2D graphics API, and a number of "backends", which implement that API on top of the built-in 2D graphics system of a given platform. This allows the same drawing code to be used on different platforms, without having to bundle a full 2D renderer. The motivation for this crate is set forth in this blog post. It is used as the basis of Druid, a cross-platform GUI toolkit. A companion for Bézier path representation and geometry is kurbo.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of piet
piet Key Features
piet Examples and Code Snippets
Community Discussions
Trending Discussions on piet
QUESTION
I have an XML document from which I would be reading data and I have to implement an interface for it. Below is the sample XML:
...ANSWER
Answered 2021-May-15 at 13:08I would suggest the first way, but you'd have to adapt your interfaces a bit.
QUESTION
I have the following example dataframe (normal dataframe has more than 1000 rows)
...ANSWER
Answered 2021-Apr-22 at 11:02Idea is create DataFrame with changed order first in concat
with rename
, remove rows with missing values and possible duplicates and change original values by DataFrame.update
:
QUESTION
I have a database file that looks like the following:
...ANSWER
Answered 2021-Mar-04 at 21:41Remember, code behind can use full file system - like any desktop code.
But if you going to use that file in the asp.net (web side), then you MUST be able to produce a valid URL path name.
So ALWAYS keep in mind the above:
Codebehind - path names are STANDARD windows file path names (and even "\" etc.).
Web pages - markup = valid URL's mapped by the web site.
If you confuse the above two concpets above? you be in for a world of pain by ignoring the above VERY simple idea.
So, you need TWO things to convert those path names to valid WEB links:
First up: The web server "site" needs rights and a "means" to point to a given folder in question.
So, you might have some say SAN or big network storage device - and you toss/place/have/put your files there.
Say like this:
QUESTION
I need to draw a two-dimensional grid of Squares with centered Text on them onto a (transparent) PNG file. The tiles need to have a sufficiently big resolution, so that the text does not get pixaleted to much.
For testing purposes I create a 2048x2048px 32-bit (transparency) PNG Image with 128x128px tiles like for example that one:
The problem is I need to do this with reasonable performance. All methods I have tried so far took more than 100ms to complete, while I would need this to be at a max < 10ms. Apart from that I would need the program generating these images to be Cross-Platform and support WebAssembly (but even if you have for example an idea how to do this using posix threads, etc. I would gladly take that as a starting point, too).
Net5 Implementation ...ANSWER
Answered 2021-Mar-03 at 11:54I was able to get all of the drawing (creating the grid and the text) down to 4-5ms by:
- Caching values where possible (
Random
,StringFormat
,Math.Pow
) - Using
ArrayPool
for scratch buffer - Using the
DrawString
overload accepting aStringFormat
with the following options:Alignment
andLineAlignment
for centering (in lieu of manually calculating)FormatFlags
andTrimming
options that disable things like overflow/wrapping since we are just writing small numbers (this had an impact, though negligible)
- Using a custom
Font
from theGenericMonospace
font family instead ofSystemFonts.DefaultFont
- This shaved off ~15ms
- Fiddling with various
Graphics
options, such asTextRenderingHint
andSmoothingMode
- I got varying results so you may want to fiddle some more
- An array of
Color
and theToArgb
function to create anint
representing the 4xbyte
s of the pixel's color - Using
LockBits
, (semi-)unsafe
code andSpan
to- Fill a buffer representing 1px high and
size * count
px wide (the entire image width) with theint
representing the ARGB values of the random colors - Copy that buffer
size
times (now representing an entire square in height) - Rinse/Repeat
unsafe
was required to create aSpan<>
from the locked bit'sScan0
pointer
- Fill a buffer representing 1px high and
- Finally, using GDI/native to draw the text over the graphic
I was then able to shave a little bit of time off of the actual saving process by using the Image.Save(Stream)
overload. I used a FileStream
with a custom buffer-size of 16kb (over the default 4kb) which seemed to be the sweet spot. This brought the total end-to-end time down to around 40ms (on my machine).
QUESTION
I'm trying to figure how the atomic store functions in the following code work, they rely on GL_KHR_memory_scope_semantics
.
ANSWER
Answered 2021-Feb-11 at 04:14The specification you linked to seems pretty clear:
gl_StorageSemantics* and gl_Semantics* values should be bitwise ORed together to generate the SPIR-V Semantics enums
And it also specifies how the GL atomic functions map to SPIR-V atomic operations. So the answers you seek are in the SPIR-V specification. And the deep details are defined by the Vulkan memory model, appendix B of the Vulkan specification.
QUESTION
I have the following JSON object:
...ANSWER
Answered 2021-Feb-10 at 14:15At the end of your for loop, 'df' keeps the last 'node' key of your json. You have to append all 'nodes' keys in a single dataframe instead.
Extending your code:
QUESTION
names = ['jan', 'piet', 'joris', 'corneel','jef']
ages = ['one', 'two', 'thee', 'four','five']
namesToDs = [{'name': name} for name in names]
ageToDs = [{'age': age} for age in ages]
concat = [[name, age] for name,age in zip(namesToDs,ageToDs)]
context = {'Team1': {'player1': concat[0] }}
print(context)
...ANSWER
Answered 2021-Feb-05 at 22:10The result you expected isn't a possible dictionary. The closest possible would be this:
QUESTION
I am new to assembly and am aware that my assembly code may not be efficient or could be better. The comments of the assembly may be messed up a little due to constant changes. The goal is to print each character of the string individually and when comes across with a format identifier like %s, it prints a string from one of the parameters in place of %s. So for example:
String: Hello, %s
Parameter (RSI): Foo
Output: Hello, Foo
So the code does what it suppose to do but give segmentation error at the end.
...ANSWER
Answered 2020-Oct-23 at 02:10In formatString
you modify %rbp
with subq %rax, %rbp
, forgetting that you will restore %rsp
from it. So when you mov %rbp, %rsp
just before the function returns, you end up with %rsp
pointing somewhere else, and so you get the wrong return address.
I guess you are subtracting some offset from %rbp
to get some space on the stack. This seems unsafe because you've pushed lots of other stuff there. It is safe to use up to 128 bytes below the stack pointer as this is the red zone, but it would be more natural to use an offset from %rsp
instead. Using SIB addressing you can access data at constant or variable offsets to %rsp
without actually changing its value.
How I found this with gdb: by setting breakpoints at myPrint
and endPrint
, I found that %rsp
was different at the ret
than it was on entry. Its value could only have come from %rbp
, so I did watch $rbp
to have the debugger break when %rbp
changed, and it pointed straight to the offending instruction in formatString
. (Which I could also have found by searching the source code for %rbp
.)
Also, your .text
at the top of the file is misplaced, so all your code gets placed in the .data
section. This actually works but it surely is not what you intended.
QUESTION
I have a List with >2500 client namens and want to create an alphabetical index of the lastNames ( first letter of the lastname ). When there are white spaces in front of the LastName ( Legacy dataissue, I know, should later get fixed ), they should be removed. If there is no LastName available then it should come up as the last item in the indexArrayro.
result should be indexArray == ["A","G","I","M","S","Z",""] in uppercase.
This is what I got so far.
...ANSWER
Answered 2020-Aug-29 at 08:29Is this what are you looking for?
QUESTION
I have the following JSON. I want to know from which country "Jan" is (Belgium).
...ANSWER
Answered 2020-Aug-07 at 12:23Get the path to the entry whose first_name
is Jan
as an array, and extract the country name from it.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install piet
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page