Tagged Questions
3
votes
2answers
52 views
Whats the formula for the amount to scale up an image during rotation to not see the edges
I've searched here and in google and maybe its that I'm not using the right combination of key words..
I'm trying to figure out how much a picture would have to be scaled up during a rotation (at ...
-1
votes
1answer
26 views
How to detect color line in image using android java
If I have an image containing black lines, like the image below. How can I detect the black lines.( to know the x,y of dots on this lines) ?
I want to know how to get started with this topic. What ...
android
0
votes
1answer
20 views
glTexEnvf alternative for GL20 OpenGL20
I was using function glTexEnvf to set one parameter GL_TEXTURE_LOD_BIAS (with target as GL_TEXTURE_FILTER_CONTROL) on GL11, but on GL20, there is no such function exists. Can someone help with telling ...
0
votes
0answers
73 views
Fast Android graphics library for basic drawings
I'm looking for library that will draw colored arcs in screen as View just like android onDraw yet faster. LibGDX is not a solution because it is a bit overcompicated, so I'm looking for easier ...
1
vote
0answers
39 views
Display 3D spherical model on hemispherical display
I would like to project a 3D sphere in Three.js (like http://simia.net/wikiglobe/) onto a hemispherical dome display. I would like the surface of the sphere to appear on the surface of the ...
0
votes
0answers
23 views
Using Preferences in Opengl es project in android
I am making a classic solar system project . I have now completely made my solar system app. but now I need to create a settings activity for that project where I can support different textures for my ...
0
votes
2answers
44 views
OpenGL ES or android.graphics?
I'm developing a client for LBS service and I need to implement some 2D and 3D graphics.
As I read, standard package android.graphics is better for 2D grahics and drawing simple objects, and opengl ...
-2
votes
1answer
64 views
Reflection floor on openGl ES 2.0
How can I make reflection floor in OpenGl ES 2.0 in which I'll see reflections of objects: spheres, cubes, etc. Everything that I saw was OpenGL samples for desktop.
0
votes
0answers
33 views
When I touch the display, Is it possible to get the vertex of an 3d object in Opengl ES(android)?
When I touch the display, Is it possible to get the vertex of an 3d object in Opengl ES(android)?
When I touch the display, I would like to get the coordinates of vertex of the 3d object.
For ...
0
votes
1answer
95 views
How to use a background image in opengl es [duplicate]
I am making a solar system project in OPENGL ES in android with an earth and a sun . I want to add a back ground image with stars in it . please tell me how to put a background image in it....
0
votes
1answer
72 views
How to spin a sphere around its own axis in opengl es
I am making a solar system project . My sun is stationary at (0,0,0) and my earth is stationary at (0,0,45). now I want my earth to rotate around its own axis while remaining fixed at its position . I ...
0
votes
1answer
58 views
How to avoid fade-out on scaled CCSprite without cancelling anti-aliasing?
I have 3 sprites. Left edge, right edge, and repeating center which has 1 pixel width but is scaled up. The problem is that the scaled sprite fades out the farther away it is from the center:
I've ...
0
votes
0answers
78 views
Drawing Shapes in OpenGL ES 1.0
I'm trying to draw shapes in opengl es 1.0 for Java android. I have no idea how to do it and there are so many tutorials for so many different versions of opengl on the web it's making my head spin. I ...
0
votes
1answer
67 views
How to replicate adding/mixing of HSV values in RGB space
At the moment I'm doing a colourizing effect using additive blending in HSV space. Have a diff value in HSV space which is added to an image texture's individual pixels to get the desired color ...
3
votes
2answers
129 views
Placing multiple images on a 3D surface
If I was to place a texture on the surface of a 3D object, for example a cube, I could use the vertices of that cube to describe the placement of this texture.
But what if I want to place multiple ...
gpu