Revision faa3ff56
Added by Leszek Koltunski almost 7 years ago
| src/main/java/org/distorted/library/effect/VertexEffectPinch.java | ||
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import org.distorted.library.type.Static4D; |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Pull all points around the center of the Effect towards a line passing through the center |
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* (that's if degree>=1) or push them away from the line (degree<=1). |
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*/ |
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public class VertexEffectPinch extends VertexEffect |
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{
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private Data2D mPinch; |
| ... | ... | |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Pull all points around the center of the Effect towards a line passing through the center |
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* (that's if degree>=1) or push them away from the line (degree<=1) |
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* Only for use by the library itself. |
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* |
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* @param pinch The current degree of the Effect + angle the line forms with X-axis |
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* @param center 3-dimensional Data that, at any given time, returns the Center of the Effect. |
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* @param region Region that masks the Effect. |
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* @y.exclude |
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*/ |
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public VertexEffectPinch(Data2D pinch, Data3D center, Data4D region) |
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{
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super(EffectName.PINCH); |
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mPinch = pinch; |
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mCenter = center; |
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mRegion = (region==null ? new Static4D(0,0,Float.MAX_VALUE, Float.MAX_VALUE) : region); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Pull all points around the center of the Effect towards a line passing through the center |
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* (that's if degree>=1) or push them away from the line (degree<=1) |
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* |
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* @param pinch The current degree of the Effect + angle the line forms with X-axis |
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* @param center 3-dimensional Data that, at any given time, returns the Center of the Effect. |
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*/ |
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public VertexEffectPinch(Data2D pinch, Data3D center) |
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{
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super(EffectName.PINCH); |
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mPinch = pinch; |
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mCenter = center; |
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mRegion = new Static4D(0,0,Float.MAX_VALUE, Float.MAX_VALUE); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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public boolean compute(float[] uniforms, int index, long currentDuration, long step ) |
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{
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mCenter.get(uniforms,index+5,currentDuration,step); |
| ... | ... | |
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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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// Pull P=(v.x,v.y) towards the line that |
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// a) passes through the center of the effect |
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// b) forms angle defined in the 2nd interpolated value with the X-axis |
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// with P' = P + (1-h)*dist(line to P) |
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// when h>1 we are pushing points away from S: P' = P + (1/h-1)*dist(line to P) |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Have to call this before the shaders get compiled (i.e before Distorted.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(EffectName.PINCH, |
| ... | ... | |
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+ "v.xy += t*dot(ps,dir)*dir;" |
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); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Pull all points around the center of the Effect towards a line passing through the center |
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* (that's if degree>=1) or push them away from the line (degree<=1) |
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* |
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* @param pinch The current degree of the Effect + angle the line forms with X-axis |
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* @param center 3-dimensional Data that, at any given time, returns the Center of the Effect. |
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* @param region Region that masks the Effect. |
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*/ |
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public VertexEffectPinch(Data2D pinch, Data3D center, Data4D region) |
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{
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super(EffectName.PINCH); |
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mPinch = pinch; |
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mCenter = center; |
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mRegion = (region==null ? new Static4D(0,0,Float.MAX_VALUE, Float.MAX_VALUE) : region); |
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} |
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/////////////////////////////////////////////////////////////////////////////////////////////////// |
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/** |
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* Pull all points around the center of the Effect towards a line passing through the center |
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* (that's if degree>=1) or push them away from the line (degree<=1) |
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* |
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* @param pinch The current degree of the Effect + angle the line forms with X-axis |
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* @param center 3-dimensional Data that, at any given time, returns the Center of the Effect. |
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*/ |
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public VertexEffectPinch(Data2D pinch, Data3D center) |
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{
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super(EffectName.PINCH); |
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mPinch = pinch; |
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mCenter = center; |
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mRegion = new Static4D(0,0,Float.MAX_VALUE, Float.MAX_VALUE); |
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} |
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} |
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