playcanvas
Version:
PlayCanvas WebGL game engine
4 lines (2 loc) • 378 B
JavaScript
var particle_stretchVS = "\n vec3 moveDir = inVel * stretch;\n vec3 posPrev = particlePos - moveDir;\n posPrev += particlePosMoved;\n vec2 centerToVertexV = normalize((mat3(matrix_view) * localPos).xy);\n float interpolation = dot(-velocityV, centerToVertexV) * 0.5 + 0.5;\n particlePos = mix(particlePos, posPrev, interpolation);\n";
export { particle_stretchVS as default };