playcanvas

Version:

PlayCanvas WebGL game engine

11 lines (9 loc) • 371 B

JavaScript

var particle_stretchVS = `
	vec3 moveDir = inVel * stretch;
	vec3 posPrev = particlePos - moveDir;
	posPrev += particlePosMoved;
	vec2 centerToVertexV = normalize((mat3(matrix_view) * localPos).xy);
	float interpolation = dot(-velocityV, centerToVertexV) * 0.5 + 0.5;
	particlePos = mix(particlePos, posPrev, interpolation);
`;

export { particle_stretchVS as default };