posStartScaling ) { position.y *= 1 - ( position.z - posStartScaling ) / scalingLength; } // waving effect // vertices for the plant should be in range [ 0.0 .. 3.0 ], pivot should be at 0.0 position.xz += 0.1 * lerp( 0.0, sin( 6 *( offsetZRaw + position.z - position.x ) ), clamp( 0.5 * ( position.y - 0.25 ), 0.0, 1.0 ) ); //=============================== float blendIn = object.lengthAndRadius.z; float blendOut = object.lengthAndRadius.w; Out.mVisibility = ( ( position.z > blendIn && position.z < blendOut ) ? 1.0 : 0.0 ); Out.mVisibility *= ( ( position.x > object.scrollPosition.z && position.x < object.scrollPosition.w ) ? 1.0 : 0.0 ); //=============================== #endif #if defined( MESH_ROTATION ) float mSpeed = object.scrollPosition.x; #if defined( DEBUG_SHOW_PARALLAX ) mSpeed = cTime_s; #endif float3 mDeformedPositionZ = position.xyz; float2 mSinCos = m_getRotationSinCos( mSpeed ); mDeformedPositionZ.x = dot( position.xy, float2( mSinCos.y, -mSinCos.x ) ); mDeformedPositionZ.y = dot( position.xy, float2( mSinCos.x, mSinCos.y ) ); position.xyz = mDeformedPositionZ.xyz; //=============================== // 15 degrees ~ 0.25 radians float blendIn = object.lengthAndRadius.z; // -0.5 float blendOut = object.lengthAndRadius.w; // 0.25 Out.mVisibility = ( ( position.y > position.x * tan( blendIn) ? 1.0 : 0.0 )); Out.mVisibility *= ( ( position.x < position.y * tan( blendOut ) ? 1.0 : 0.0 )); Out.mVisibility *= ( ( position.z > object.scrollPosition.z && position.z < object.scrollPosition.w ) ? 1.0 : 0.0 ); //=============================== #endif #if defined( MESH_SCROLLING ) float crawlerLength = object.lengthAndRadius.x; float crawlerRadius = object.lengthAndRadius.y; float crawlerRadiusPi = 3.1415926 * crawlerRadius; float crawlerLength2 = object.lengthAndRadius.z; float crawlerOffset = object.lengthAndRadius.w; float posFirstRot = crawlerOffset + crawlerLength; float posAfterRot = posFirstRot + crawlerRadiusPi * 0.5; float posAfterLast = posAfterRot + crawlerLength2; float offsetZRaw = object.scrollPosition.x; #if defined( DEBUG_SHOW_PARALLAX ) offsetZRaw = cTime_s; #endif position.z = fmod( position.z + offsetZRaw, posAfterLast ); //=============================== float blendIn = crawlerOffset; float blendOut = posAfterLast - crawlerLength2; Out.mVisibility = ( ( position.z > blendIn && position.z < blendOut ) ? 1.0 : 0.0 ); Out.mVisibility *= ( ( position.z > object.scrollPosition.z ) ? 1.0 : 0.0 ); //=============================== if (position.z > posAfterRot) { float curZ = position.z; position.z = posFirstRot + position.y; position.y = - (curZ - posAfterRot); } else if (position.z > posFirstRot) { // crawlerRadius = position.y ( based on 3d mesh data ) float angle = (position.z - posFirstRot) / crawlerRadius; position.z = posFirstRot + sin(angle) * position.y; position.y = cos(angle) * position.y; } #endif ]]> posStartScaling ) { normal.y *= 1 - ( posZ - posStartScaling ) / scalingLength; } return normal; #endif #if defined( MESH_ROTATION ) float mSpeed = object.scrollPosition.x; #if defined( DEBUG_SHOW_PARALLAX ) mSpeed = cTime_s; #endif float3 mDeformedNormalZ = In.normal.xyz; float2 mSinCos = m_getRotationSinCos( mSpeed ); mDeformedNormalZ.x = dot( In.normal.xy, float2( mSinCos.y, -mSinCos.x ) ); mDeformedNormalZ.y = dot( In.normal.xy, float2( mSinCos.x, mSinCos.y ) ); return mDeformedNormalZ; #endif #if defined( MESH_SCROLLING ) float3 normal = In.normal.xyz; float crawlerOffset = object.lengthAndRadius.w; float crawlerRadius = object.lengthAndRadius.y; float crawlerRadiusPi = 3.1415926 * crawlerRadius; float crawlerLength = object.lengthAndRadius.x; float crawlerLength2 = object.lengthAndRadius.z; float posFirstRot = crawlerOffset + crawlerLength; float posAfterRot = posFirstRot + crawlerRadiusPi * 0.5; float posAfterLast = posAfterRot + crawlerLength2; float offsetZRaw = object.scrollPosition.x; #if defined( DEBUG_SHOW_PARALLAX ) offsetZRaw = cTime_s; #endif float posZ = fmod( getPosition(In, object).z + offsetZRaw, posAfterLast ); if (posZ > posAfterRot) { normal.yz = float2(-normal.z, normal.y); } else if (posZ > posFirstRot) { // z=0 -> 0 // z=pi*r -> pi float angle = (posZ - posFirstRot) / crawlerRadius; float cosAngle = cos(angle); float sinAngle = sin(angle); normal.y = cosAngle * In.normal.y - sinAngle * In.normal.z; normal.z = sinAngle * In.normal.y + cosAngle * In.normal.z; } return normal; #endif ]]> posStartScaling ) { tangent.y *= 1 - ( posZ - posStartScaling ) / scalingLength; } return tangent; #endif #if defined( MESH_ROTATION ) float mSpeed = object.scrollPosition.x; #if defined( DEBUG_SHOW_PARALLAX ) mSpeed = cTime_s; #endif float3 mDeformedTangetZ = In.tangent.xyz; float2 mSinCos = m_getRotationSinCos( mSpeed ); mDeformedTangetZ.x = dot( In.tangent.xy, float2( mSinCos.y, -mSinCos.x ) ); mDeformedTangetZ.y = dot( In.tangent.xy, float2( mSinCos.x, mSinCos.y ) ); return mDeformedTangetZ; #endif #if defined( MESH_SCROLLING ) float3 tangent = In.tangent.xyz; float crawlerOffset = object.lengthAndRadius.w; float crawlerRadius = object.lengthAndRadius.y; float crawlerRadiusPi = 3.1415926 * crawlerRadius; float crawlerLength = object.lengthAndRadius.x; float crawlerLength2 = object.lengthAndRadius.z; float posFirstRot = crawlerOffset+crawlerLength; float posAfterRot = posFirstRot + crawlerRadiusPi * 0.5; float posAfterLast = posAfterRot + crawlerLength2; float offsetZRaw = object.scrollPosition.x; #if defined( DEBUG_SHOW_PARALLAX ) offsetZRaw = cTime_s; #endif float posZ = fmod( getPosition(In, object).z + offsetZRaw, posAfterLast ); if (posZ > posAfterRot) { tangent.yz = float2(-tangent.z, tangent.y); } else if (posZ > posFirstRot) { // z=0 -> 0 // z=pi*r -> pi float angle = (posZ - posFirstRot) / crawlerRadius; float cosAngle = cos(angle); float sinAngle = sin(angle); tangent.y = cosAngle * In.tangent.y - sinAngle * In.tangent.z; tangent.z = sinAngle * In.tangent.y + cosAngle * In.tangent.z; } return tangent; #endif ]]>