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package org.distorted.library.effect;
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import org.distorted.library.type.Data2D;
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import org.distorted.library.type.Data3D;
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import org.distorted.library.type.Data4D;
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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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private Data3D mPinch;
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private Data3D mCenter;
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private Data4D mRegion;
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boolean ret = mPinch.get(uniforms,index,currentDuration,step);
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uniforms[index+1] = (float)(Math.PI*uniforms[index+1]/180);
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uniforms[index+2] = (float)(Math.PI*uniforms[index+2]/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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// 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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// Pull P=(v.x,v.y) along a vector from the center of region sphere to a point on it defined by
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// the (latitude,longitude) pair of angles 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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// (where 'line' above passes through the center point and goes along the vector)
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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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addEffect(EffectName.PINCH,
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"vec3 center = vUniforms[effect+1].yzw; \n"
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+ "vec3 ps = center-v; \n"
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+ "float h = vUniforms[effect].x; \n"
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+ "float t = degree(vUniforms[effect+2],center,ps) * (1.0-h)/max(1.0,h); \n"
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+ "float angle = vUniforms[effect].y; \n"
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+ "vec2 dir = vec2(sin(angle),-cos(angle)); \n"
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+ "v.xy += t*dot(ps.xy,dir)*dir;"
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"vec3 center = vUniforms[effect+1].yzw; \n"
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+ "vec3 ps = center-v; \n"
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+ "float h = vUniforms[effect].x; \n"
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+ "float deg = degree(vUniforms[effect+2],center,ps); \n"
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+ "float t = deg * (1.0-h)/max(1.0,h); \n"
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+ "float latitude = vUniforms[effect].y; \n"
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+ "float longitude = vUniforms[effect].z; \n"
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+ "float sinLAT = sin(latitude); \n"
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+ "float cosLAT = cos(latitude); \n"
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+ "float sinLON = sin(longitude); \n"
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+ "float cosLON = cos(longitude); \n"
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+ "vec3 dir = vec3(sinLON*cosLAT,sinLAT,cosLON*cosLAT);\n"
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+ "v += t*dot(ps,dir)*dir;"
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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 pinch The current degree of the Effect + (latitude,longitude) pair of angles defining the
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* * point towards which (and its antipode) the pinching power is strongest.
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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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public VertexEffectPinch(Data3D 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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* 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 pinch The current degree of the Effect + (latitude,longitude) pair of angles defining the
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* point towards which (and its antipode) the pinching power is strongest.
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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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public VertexEffectPinch(Data3D pinch, Data3D center)
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{
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super(EffectName.PINCH);
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mPinch = pinch;
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Make the 'PINCH' effect fully 3D (define its acting line in terms of (latitude,longitude) angle pair).
Still, something is not fully working in the Earth app with the effect - investigate.