Sun Range Bitmap Daily R1/3 - Update 2018-06-17

[theo-armour]

@ladybug-tools/spiders

Shadows calculated as one position per minute for a total of 720 sun positions projected onto a 512 x 512 pixel bitmap applied to a Three.js mesh as a material with anistropy of 4

sun range bitmap daily R1

• Givens:

  • a bunch of random boxes in 3D space and a ground plane
  • Any latitude and longitude
  • Any month and day of the year
  • Number of pixels per side of generated bitmap - from 16 to 512
  • Number of time slices per hour for twelve hours - from once an hour to once a minute
  • Anisotropy ( softness of shadow ) - from none to 16

• Generates:

  • Data for shadows cast by the boxes on to the surface
  • Creates a bitmap to display the calculated data
  • Applies bitmap as a material texture to a Three.js mesh
  • Generates spheres to represent position of Sun
  • Completion time ranges from sub-second to several minutes depending on parameters

Wish list / To Do

• 2018-06-08 ~ Theo ~ Add actual building data from gbXML or Radiance files
• 2018-06-08 ~ Theo ~ Obtain further data from EPW files
• 2018-06-08 ~ Theo ~ Add false colors capability
• 2018-06-08 ~ Theo ~ Add add seasonal and annual output capability
• 2018-06-08 ~ Theo ~ Make even faster

[theo-armour]

@bwelle

Sun Range Bitmap Yearly R1

• Draws a Sun for every 1 to 60 minutes per 12 hour day for each of the twelve months
• Select to draw for quarters or full year
• Only draws a Sun that is above the horizon

[theo-armour]

Starting to add the geometry for the number of shadow incidents per time period

Sun Range Bitmap Daily R3

• Fifty randomly position planes with 2x2 vertices per plane
• 128x128 pixel ground plane bitmap. 14 hours at 15 minute intervals
• Light and darkness on plane/ green and red arrows at vertices: both indicate the number of shadow events at each vertex

Coming up next: shadow events on actual gbXML and RAD files