Image courtesy of Marcin Jastrz?bsk
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As this primitive is made of straight segments of a cone, the number of Points per Blade define the number of straight cone segments in each blade. You may determine the number of segments you need depending on how it looks from your camera view. The more segments, the smoother the cylindrical blades will look, but you will also increase the demands of RAM usage that is needed to render your scene.
Cylinder primitive using 16 points per blade
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Several MaxwellGrass modifiers being applied on the same ground geometry (screenshot from Studio)
Two independent grass modifiers applied together to the same ground geometry (hidden here) to create a more natural look by generating a mix of two different grass species
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This percentage allows you to define if the main growing direction of the blades will grow completely vertical towards the world-Y axis (when set to 100%) like the natural phototropism in plants no matter the ground surface orientation, to grow perpendicular to the "ground" surface (when set to 0%) or any value in between. The rest of the angle parameters will be applied after this main growing parameter; so the Initial Angle will mean a deviation from this main growing direction, as well as the Initial Angle Variation.
Grow Towards World-Y = 0% 0% Grow towards World-Y = 100% 100% Grow Towards World-Y = 50%
Example of grass with setting Grow Towards World-Y = 50%. Notice how the blades of grass in the slopes lean up.
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The Cut Off feature allows you to cut the grass as if it were mowed, producing and abrupt cut.
Different values for Cut Off
Cut Off
The length of the blade (in percentage) at which the blade will be cut. The blade grows as usual until this point, after which it will be cut. A value of 100% will let the blade to grow up to its nominal length (no cut at all), while a value of 0% will cut the blade at its very birth (at zero length).
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Adjusting the grass display settings to display just 10% of the generated fibers in the viewport (screenshot from Studio)