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component:hologram [2014/07/09 23:52] sangar created |
component:hologram [2014/07/10 09:07] vexatos |
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| + | Component: Hologram | ||
| + | ================== | ||
| This component is provided by the Hologram Projector. | This component is provided by the Hologram Projector. | ||
| These can be used to create holographic projections in a resolution of 48x32x48, over a maximum area of 9x6x9 blocks. Holograms are defined via 48x48 32-bit bit masks, where each bit defines whether the voxel at that height should be on or off. Tier two holograms do not provide a higher resolution, instead they allow using up to three colors in the displayed hologram (as opposed to just one for the tier one hologram). | These can be used to create holographic projections in a resolution of 48x32x48, over a maximum area of 9x6x9 blocks. Holograms are defined via 48x48 32-bit bit masks, where each bit defines whether the voxel at that height should be on or off. Tier two holograms do not provide a higher resolution, instead they allow using up to three colors in the displayed hologram (as opposed to just one for the tier one hologram). | ||
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| - `get(x:number, y:number, z:number):number` | - `get(x:number, y:number, z:number):number` | ||
| Returns the value at the specified position. | Returns the value at the specified position. | ||
| - | - `set(x:number, y:number, z:number, value:number)` | + | - `set(x:number, y:number, z:number, value:number or boolean)` |
| Set the value for the specified position. | Set the value for the specified position. | ||
| - `fill(x:number, z:number, height:number, value:number)` | - `fill(x:number, z:number, height:number, value:number)` | ||
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| local component = require("component") | local component = require("component") | ||
| local hologram = component.hologram | local hologram = component.hologram | ||
| - | |||
| - | function setVoxel(x, y, z, value) | ||
| - | local current = hologram.get(x, z) | ||
| - | local positiveMask = bit32.lshift(1, y - 1) | ||
| - | if value then | ||
| - | hologram.set(x, z, bit32.bor(current, positiveMask)) | ||
| - | else | ||
| - | local negativeMask = bit32.bnot(positiveMask) | ||
| - | hologram.set(x, z, bit32.band(current, negativeMask)) | ||
| - | end | ||
| - | end | ||
| - | |||
| local args = {...} | local args = {...} | ||
| - | setVoxel(tonumber(args[1]), tonumber(args[2]), tonumber(args[3]), args[4] == "true" or args[4] == "on") | + | hologram.set(tonumber(args[1]), tonumber(args[2]), tonumber(args[3]), args[4] == "true" or args[4] == "on") |
| ``` | ``` | ||
| Line 55: | Line 45: | ||
| This program generates a random heightmap and displays scrolling text above it. | This program generates a random heightmap and displays scrolling text above it. | ||
| - | Note, the second example is quite a bit more advanced then the first. **Important**: both scripts also need the [`noise.lua`](https://github.com/OpenPrograms/Sangar-Programs/blob/master/noise.lua) script to be in the same folder. | + | Note, the second example is quite a bit more advanced then the first. **Important**: both scripts also need the [noise.lua](https://github.com/OpenPrograms/Sangar-Programs/blob/master/noise.lua) script to be in the same folder. |
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| {{page>component:contents&noheader&noeditbutton&nouser&nofooter}} | {{page>component:contents&noheader&noeditbutton&nouser&nofooter}} | ||