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Stellar View

Star Fields

Star Field

A Star Field is a type of Space Object that defines the shape and size of a collection of stars and dust clouds, which means it can be used to represent star clusters and galaxies.

Definition

  • parent_location OPTIONAL - Defines the path (Resource Location) the object's parent.

  • coords REQUIRED - Specifies the space coordinates of the object.

  • axis_rotation REQUIRED - Specifies the rotation of the object around its individual axes (X axis -> Z axis -> Y axis).

  • dust_clouds OPTIONAL - Specifies the number of dust clouds that generate in the Star Field. [Min = 0 | Max = 4000]

  • dust_cloud_info OPTIONAL - Defines the path to the Dust Cloud Info file reference.

  • dust_cloud_texture OPTIONAL - Defines the path to the texture file used for rendering the dust cloud texture.

  • clump_dust_clouds_in_center OPTIONAL - Decides whether dust clouds should be evenly distributed around the Star Field or if they should clump around the center, true by default.

  • dust_cloud_stretch OPTIONAL - Specifies the dust cloud stretch along each of the Star Field's relative axes.

  • stars REQUIRED - Specifies the number of stars that generate in the Star Field. [Min = 0 | Max = 30000]

  • star_info OPTIONAL - Defines the path to the Star Info file reference.

  • star_texture OPTIONAL - Defines the path to the texture file used for rendering the star texture.

  • clump_stars_in_center OPTIONAL - Decides whether dust clouds should be evenly distributed around the Star Field or if they should clump around the center, true by default.

  • star_stretch OPTIONAL - Specifies the star stretch along each of the Star Field's relative axes.

  • seed REQUIRED - Specifies the seed used for randomizing the Star Field's generation.

  • diameter_ly REQUIRED - Specifies the Star Field's diameter in Light Years.

  • spiral_arms OPTIONAL - Defines the Star Field's individual Spiral Arms.

Star Stretch and Dust Cloud Stretch

Stretch, as the name implies, stretches the coordinates along which a star or a dust cloud generates. This means that if a Star Field's is stretch defined as { "x": 1.0, "y": 0.25, "z": 1.0 }, a star that would have otherwise generated at coordinates (4, 4, 4) will instead generate at coordinates (4, 1, 4). Note that these stretched coordinates are relative to the Star Field's Axis Rotation.

Spiral Arm

Spiral Arms emulate the arms of a Spiral Galaxy. Each Spiral Arm holds its own Dust Cloud Info, meaning one galaxy may have multiple Spiral Arms, each of which has different dust cloud colors.

Definition

  • dust_clouds OPTIONAL - Specifies the number of dust clouds that generate in the Spiral Arm. [Min = 0 | Max = 4000]
  • dust_cloud_info OPTIONAL - Defines the path to the Dust Cloud Info file reference.
  • stars REQUIRED - Specifies the number of stars that generate in the Spiral Arm. [Min = 0 | Max = 30000]
  • arm_rotation REQUIRED - Specifies the relative rotation of the Star Field's Spiral Arm around its relative Y-axis.
  • arm_length REQUIRED - Specifies the relative length of the Spiral Arm compared to the Star Field's diameter.
  • arm_thickness REQUIRED - Specifies the relative thickness of the Spiral Arm, which decides the maximum spread of stars around the arm's central spiral.
  • clump_stars_in_center OPTIONAL - Decides whether stars should be evenly distributed around the Spiral Arm or if they should clump around the center, true by default.

Examples

Star Field definition example for the Milky Way galaxy:

{

	"coords": { "right_ascension": {"hours": 17, "minutes": 45, "seconds": 40.0409}, "declination": {"degrees": -29, "minutes": 0, "seconds": 28.118}, "distance": {"ly": 26996} },

	"axis_rotation": { "x_axis": 0, "y_axis": 0, "z_axis": 0 },

	

	"seed": 10842,

	"diameter_ly": 90000,

	

	"stars": 2000,

	"dust_clouds": 5,

	

	"star_stretch": { "x": 1.0, "y": 0.25, "z": 1.0 },

	"dust_cloud_stretch": { "x": 0.25, "y": 0.25, "z": 0.25 },

	

	"spiral_arms":

	[

		{ "dust_clouds": 25, "stars": 1500, "arm_rotation": 0, "arm_length": 1.6298770314100501, "arm_thickness": 2.0, "dust_cloud_info": "stellarview:milky_way/milky_way_arm_distribution" },

		{ "dust_clouds": 25, "stars": 1500, "arm_rotation": 90, "arm_length": 1.6941251689586823, "arm_thickness": 2.0, "dust_cloud_info": "stellarview:milky_way/milky_way_arm_distribution" },

		{ "dust_clouds": 25, "stars": 1500, "arm_rotation": 180, "arm_length": 1.9660513834462778, "arm_thickness": 2.0, "dust_cloud_info": "stellarview:milky_way/milky_way_arm_distribution" },

		{ "dust_clouds": 25, "stars": 1500, "arm_rotation": 270, "arm_length": 1.8086568638593041, "arm_thickness": 2.0, "dust_cloud_info": "stellarview:milky_way/milky_way_arm_distribution" }

	],

	

	"dust_cloud_info": "stellarview:milky_way/milky_way_core_distribution",

	"star_info": "stellarview:main_sequence_distribution"

}