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Questions tagged [rasterizing]

Rasterization (or rasterization) is the task of taking an image described in a vector graphics format (shapes) and converting it into a raster image (pixels or dots) for output on a video display or printer, or for storage in a bitmap file format.

In normal usage, the term refers to the popular rendering algorithm for displaying three-dimensional shapes on a computer. Rasterization is currently the most popular technique for producing real-time 3D computer graphics. Real-time applications need to respond immediately to user input, and generally need to produce frame rates of at least 30 frames per second to achieve smooth animation.

Definition

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How to really rasterize text in Actionscript 3?

Actionscript Bitmap (or BitmapData) is weird. Not only it's cacheAsBitmap is false by default, but it seems BitmapData is not really just a bitmap! I found out, that animating Text Lines alpha will make them blink. I tried to workaround it in many…
Markus von Broady
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Rasterizing a triangle in Java

Is there a Java graphics library that will rasterize a triangle given the coordinates of the vertices? I'm trying to analyse the pixel values of an image for the triangular region defined by three points. I have the pixel values in memory, so I just…
Don Kirkby
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Is Apple Metal triangle rasterisation rule top-left?

Does Metal use the "top-left rule" to decide whether a pixel center that is exactly on a triangle edge is considered inside the triangle? Or what is the rule used? Thank you for help!
Céline
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Converting PDFs, .AI, .PSD files to PNG and keeping transparency with ImageMagick

I am trying to convert any file to a PNG with transparency if the original file has transparency, of course. This works with a transparent PNG but I can't get it to work with with a PDF, AI, or PSD file. Everything just converts with a white…
kirkage
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How does a rasterized render pipeline select the correct mipmap level

The theoretical knowledge i learned already is the following: when selecting the mipmap level first the footprint of a fragment onto a texture is calculated. Based on that the mipmap level can be calculated using the log2. For raytraced renderers…
Karl Sassie
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Can anyone tell me why my projection perspective matrix isn't working?

I'm a beginner in WebGL and graphics programming in general. I'm trying to render procedurally generated terrain. My first stab at this seemed to work and I get the following result. I want to add perspective projection to this, but I end up just…
Andrew Lubrino
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Sector rasterization JavaFX

I have method drawSector, where boolean function isInsideSector checks if point in circle is inside sector and color it. But output sector is wrong with its coordinates, and I don't know where the problem is. Here is my logic and code: public static…
eques
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How to use options parameter from rasterizeHtml.js?

I tried this logic but it didn't work: var canvas = document.getElementById("canvas"); document.body.appendChild(rasterizeHTML.drawHTML(document.body.innerHTML, canvas, {height:'1000px'})); Options is an object and I tried to pass in it the width…
Catalin Briscan
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Trouble With Barycentric Rasterizer (based on the ryg blog)

I have been trying to implement the optimized rasterizer outlined in this blog: https://fgiesen.wordpress.com/2013/02/10/optimizing-the-basic-rasterizer/. The naive approach outlined in his prior blog post…
aurreco
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Can I read line pixel coordinates in Skia, without actually rendering a line to bitmap?

I have quite unique use case for Skia 2D-graphics library, where I require the maximum performance. This puts some limitations to my code. Requirements: Calculate pixel coordinates (x,y) of hundreds of lines from (x0, y0, to x1, y1) Each line has…
Sami Viitala
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How to find coordinates of every point of vector created from on point to another

I have 2 points, for example A(1, 30), B(20, 10). I should draw in console the vector with nearest path of *. I should get every point of path, how can I do this?
salvatore
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C Triangle Rasterizer rendering problems

Im trying to write an Software Renderer using this tutorial series: https://www.youtube.com/watch?v=2U-4_vpw1lQ&list=PLEETnX-uPtBUbVOok816vTl1K9vV1GgH5&index=13 But the problem is I try to render a Ico Sphere but it doesn't look right. See image:…
Mori TM
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R - Convert points into points in the centre of raster of 30 x 30m

I want to transform a specific dataset of spatial points to points in the centre of a raster. The result sould be spatial points and for each point in the original dataset a point in the centre of the raster. I made this example code to get a better…
ChrissiLissi
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How to convert .shp file into .tif file in R or Python?

I have a .shp file (2 columns: Total population and POLYGON objects as geometry) and I want to convert it into a .tif file. How can I do it in Python or R? My shapefile
MarFat
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Rasterizing polygons with complicated weighting

Imagine a regular 0.5° grid across the Earth's surface. A 3x3 subset of this grid is shown below. As a stylized example of what I'm working with, let's say I have three polygons—yellow, orange, and blue—that for the sake of simplicity all are 1 unit…
Sam R
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