Revision f046b159
Added by Leszek Koltunski almost 4 years ago
| src/main/java/org/distorted/library/effect/VertexEffectSwirl.java | ||
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*/ |
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public class VertexEffectSwirl extends VertexEffect |
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{
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private static final EffectName NAME = EffectName.SWIRL; |
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private Data1D mSwirl; |
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private Data3D mCenter; |
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private Data4D mRegion; |
| ... | ... | |
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{
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mCenter.get(uniforms,index+CENTER_OFFSET,currentDuration,step); |
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mRegion.get(uniforms,index+REGION_OFFSET,currentDuration,step); |
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boolean ret = mSwirl.get(uniforms,index,currentDuration,step); |
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boolean ret = mSwirl.get(uniforms,index+VALUES_OFFSET,currentDuration,step);
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uniforms[index] = (float)(Math.PI*uniforms[index]/180); |
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uniforms[index+VALUES_OFFSET] = (float)(Math.PI*uniforms[index]/180);
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return ret; |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// PUBLIC API |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// Let d be the degree of the current vertex V with respect to center of the effect S and Region vRegion. |
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// This effect rotates the current vertex V by vInterpolated.x radians clockwise around the circle dilated |
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// by (1-d) around the center of the effect S. |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Have to call this before the shaders get compiled (i.e before DistortedLibrary.onCreate()) for the Effect to work. |
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*/ |
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public static void enable() |
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static String code() |
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{
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addEffect(EffectName.SWIRL,
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return
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"vec3 center = vUniforms[effect+1].yzw; \n" |
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+ "vec3 PS = center-v.xyz; \n" |
| ... | ... | |
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+ "vec4 SG = (1.0-deg1)*SO; \n" // coordinates of the dilated circle P is going to get rotated around |
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+ "float d2 = max(0.0,degree(SG,PS2)); \n" // make it a max(0,deg) because otherwise when center=left edge of the |
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// object some points end up with d2<0 and they disappear off view. |
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+ "v.xy += deg1 * (PS.xy - PS2.xy/(1.0-d2)); \n" // if d2=1 (i.e P=center) we should have P unchanged. How to do it? |
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); |
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+ "v.xy += deg1 * (PS.xy - PS2.xy/(1.0-d2)); \n";// if d2=1 (i.e P=center) we should have P unchanged. How to do it? |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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// PUBLIC API |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Have to call this before the shaders get compiled (i.e before DistortedLibrary.onCreate()) for the Effect to work. |
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*/ |
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public static void enable() |
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{
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addEffect( NAME, code() ); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
| ... | ... | |
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*/ |
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public VertexEffectSwirl(Data1D swirl, Data3D center, Data4D region) |
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{
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super(EffectName.SWIRL);
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super(NAME);
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mSwirl = swirl; |
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mCenter = center; |
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mRegion = (region==null ? MAX_REGION : region); |
| ... | ... | |
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*/ |
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public VertexEffectSwirl(Data1D swirl, Data3D center) |
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{
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super(EffectName.SWIRL);
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super(NAME);
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mSwirl = swirl; |
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mCenter = center; |
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mRegion = MAX_REGION; |
Also available in: Unified diff
First attempt at the MeshBase.apply(VertexEffect) API.