[android-developers] Re: Android circular seek bar

Hi Dj.

Here is the fragment shader that does the polar coordinates I spoke of:

#extension GL_OES_EGL_image_external: require

uniform samplerExternalOES tex_sampler_0;

precision mediump float;

varying vec2 v_texcoord;

const float PI = 3.14159265358979323846264;

const vec2 texOff = vec2(0.0, 0.0);

const vec2 texSize = vec2(1.0, 1.0);

void main(void) {

    vec2 norm = (1.0 - v_texcoord) * 2.0 - 1.0;

    float theta = PI + atan(norm.x, norm.y);

    float r = length(norm);

    vec2 polar = 1.0 - vec2(theta / (2.0 * PI), r);

    gl_FragColor = texture2D(tex_sampler_0, (polar + texOff) * texSize);

}

I have tested it myself, and it seems to work great.

On Thursday, December 13, 2012 10:37:02 AM UTC-6, djhacktor wrote:

see this image i want this kinda  ui

On Thursday, 13 December 2012 17:53:09 UTC+5:30, skink wrote:

djhacktor wrote:
> @ sink i mean that how can i put image in seek bar progressdrawable  (
> image is a circle ) and same with thumb
>
>

how to put an image in a drawable? i still dont understand...

pskink

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