org.skia.jetskidemo.AnimationRenderer Class Reference

Inheritance diagram for org.skia.jetskidemo.AnimationRenderer:

Protected Member Functions
void	onSurfaceInitialized (Surface surface)
void	onRenderFrame (Canvas canvas, long ms)

Detailed Description

Definition at line 16 of file AnimationActivity.java.

Member Function Documentation

onRenderFrame()

void org.skia.jetskidemo.AnimationRenderer.onRenderFrame ( Canvas  canvas, long  ms  )

inlineprotected

Definition at line 57 of file AnimationActivity.java.

                                                         {
        final float kWidth  = 400,
                    kHeight = 200,
                    kSpeed  = 4;
 
        canvas.drawColor(0xffffffe0);
 
        float cw = canvas.getWidth(),
              ch = canvas.getHeight(),
            osc1 = (float)(java.lang.Math.cos(ms * kSpeed / 1000)),
            osc2 = (float)(java.lang.Math.sin(ms * kSpeed / 1000));
 
        drawRect(canvas, (1 + osc1)*cw/2, ch/2, mLinearGradient);
        drawRect(canvas, (1 - osc1)*cw/2, ch/2, mConicalGradient);
        drawRect(canvas, cw/2, (1 + osc2)*ch/2, mRadialGradient);
        drawRect(canvas, cw/2, (1 - osc2)*ch/2, mSweepGradient);
    }

onSurfaceInitialized()

void org.skia.jetskidemo.AnimationRenderer.onSurfaceInitialized ( Surface  surface )

inlineprotected

Definition at line 29 of file AnimationActivity.java.

                                                         {
        float sw = surface.getWidth(),
              sh = surface.getHeight();
 
        float[] colors1 = {
                            1,0,0,1,
                            0,1,0,1,
                            0,0,1,1
                          };
        int[]   colors2 = {
                            0xffffff00,
                            0xff00ffff,
                            0xffff00ff
                          };
 
        float[] pos = {0, 0.5f, 1};
 
        mLinearGradient = new LinearGradient(0, 0, sw/4, 0,
                                             colors1, pos, TileMode.REPEAT);
        mRadialGradient = new RadialGradient(sw/2, sh/4, Math.min(sw, sh)/2,
                                             colors2, pos, TileMode.REPEAT);
        mConicalGradient = new TwoPointConicalGradient(sw/4, sh/2, sw/4,
                                                       sw/2, sh/2, sw/2,
                                                       colors1, pos, TileMode.MIRROR);
        mSweepGradient = new SweepGradient(sw/2, sh/4, 0, 90, colors2, pos, TileMode.REPEAT);
    }

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The documentation for this class was generated from the following file:

• third_party/skia/platform_tools/android/apps/jetskidemo/src/main/java/org/skia/jetskidemo/AnimationActivity.java