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Why are objects in my hair particle system not sitting on the ground?
See Why are the objects in my hair particle system not sitting on top of the ground?. By using this technique the orientation of the particles is kept independent of their size, and you can add some random rotations via the Particle settings > Rotation > Random settings:
How to make hair particles go straight up?
Note that you’ll have to rotate your objects so they are facing either the +X or +Y direction instead of the +Z direction. See Why are the objects in my hair particle system not sitting on top of the ground?.
How to hide mesh but keep hair particles?
I added the particle instance modifier like it says in this question Hiding source of particle instancing but it didn’t hide the mesh. PropertiesEditor–>Particles–>Render–>Emitter. In Blender 2.8, this is done by disabling Display Instancer (for viewport) and Render Instancer (for render) in the Instancing panel of Object Properties.
How to make the ” object applied to hair ” bend like the?
So I just have normal hair particles with either Brownian motion applied or combed manually. Basically the strands are bent and not straight. When I go to the Render panel and choose render “Object” and select an object, it does not curve like the hair particles.
How to make hair go straight up instead of downward?
I would like the trees instead of going outwards, to go upwards. How could you do this? Enable Advanced and Rotation, then set the Initial Orientation to Global Z: Note that you’ll have to rotate your objects so they are facing either the +X or +Y direction instead of the +Z direction.
How are the orientation of the particles kept independent?
By using this technique the orientation of the particles is kept independent of their size, and you can add some random rotations via the Particle settings > Rotation > Random settings: Adding such randomizations will help make repeated use of the same models less noticeable.