What effect does a higher number in the Tree Density property have when painting trees?

When the Tree Density property is increased while painting trees in Unity, it directly correlates with the number of trees that are generated in the scene. A higher number in this property means that more trees will be placed within the designated area. This allows for a denser forest or tree population, which can enhance the visual complexity and realism of the environment. The Tree Density setting is crucial for artists and developers to control the scale and arrangement of vegetation, thus enabling them to create varied landscapes that align with the desired aesthetic and gameplay requirements.

In contrast, a lower Tree Density value would result in fewer trees being placed, which could lead to a more sparse environment. Similarly, the options that suggest no effect on tree painting or that it only influences tree size do not accurately reflect the role of the Tree Density property in determining how many trees are rendered in the scene.