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Merge "tweak the electron beam animation a bit" into klp-dev

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Mathias Agopian
2013-09-06 19:16:36 +00:00
committed by Android (Google) Code Review
parent a4796d51f6 97f0aa6f8a
commit 52a5096f7c
1 changed files with 5 additions and 5 deletions
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10
services/java/com/android/server/power/ElectronBeam.java
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@@ -319,10 +319,10 @@ final class ElectronBeam {
/**
* Draws a frame where the electron beam has been stretched out into
* a thin white horizontal line that fades as it expands outwards.
* a thin white horizontal line that fades as it collapses inwards.
*
* @param stretch The stretch factor. 0.0 is no stretch / no fade,
* 1.0 is maximum stretch / maximum fade.
* @param stretch The stretch factor. 0.0 is maximum stretch / no fade,
* 1.0 is collapsed / maximum fade.
*/
private void drawHStretch(float stretch) {
// compute interpolation scale factor
@@ -338,7 +338,7 @@ final class ElectronBeam {
// draw narrow fading white line
setHStretchQuad(mVertexBuffer, mDisplayWidth, mDisplayHeight, ag);
GLES10.glColor4f(1.0f - ag, 1.0f - ag, 1.0f - ag, 1.0f);
GLES10.glColor4f(1.0f - ag*0.75f, 1.0f - ag*0.75f, 1.0f - ag*0.75f, 1.0f);
GLES10.glDrawArrays(GLES10.GL_TRIANGLE_FAN, 0, 4);
// clean up
@@ -355,7 +355,7 @@ final class ElectronBeam {
}
private static void setHStretchQuad(FloatBuffer vtx, float dw, float dh, float a) {
final float w = dw + (dw * a);
final float w = 2 * dw * (1.0f - a);
final float h = 1.0f;
final float x = (dw - w) * 0.5f;
final float y = (dh - h) * 0.5f;