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Difference between revisions of "Spell Casting Tables"

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==Potential Drain==
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==Area of Effect Shapes==
==Area of Effect Shapes==


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* To determine the height when the radius is known: <math>r=\sqrt{\frac{3v}{\pi h}}</math>
* To determine the height when the radius is known: <math>r=\sqrt{\frac{3v}{\pi h}}</math>
* To determine the radius when the height is known: <math>h=\frac{3v}{\pi r^2}</math>
* To determine the radius when the height is known: <math>h=\frac{3v}{\pi r^2}</math>
===Dome===
Sphere's have the problem that, in many instances, the bottom of the sphere is below ground. The caster doesn't really need a full sphere, a dome is sufficient. The formula for a dome depends on whether the caster is using a full half sphere or a smaller cap. The volume of the spherical cap and the area of the curved surface may be calculated using combinations of
* The radius <math>r</math> of the sphere
* The radius <math>a</math> of the base of the cap
* The height <math>h</math> of the cap
[[File:Dome.gif|border|right]]
<math>v=\frac{\pi h^2}{3}(3r-h)</math>
Most commonly, the caster will be casting a hemisphere, where the r and a are equivalent. In this case, to determine the radius from the volume, use this formula:
v=(2/3)PI()r^3
<math>r=(\frac{3v}{2 \pi})^\frac{1}{3}</math>

Latest revision as of 00:59, 27 December 2020

Potential Drain

Potential Drain Chart
Drain Range
meters
Area of Effect
cubic meters
1 2 3
2 4 9
3 8 27
4 16 81
5 32 243
6 64 729
7 128 2,187
8 256 6,561
9 512 19,683
10 1,024 59,049
11 2,048 177,147
12 4,096 531,441
13 8,192 1,594,323
14 16,384 4,782,969
15 32,768 14,348,907
16 65,536 43,046,721
17 131,072 129,140,163
18 262,144 387,420,489
19 524,288 1,162,261,467
20 1,048,576 3,486,784,401

Area of Effect Shapes

Drain Sphere
m Radius
Cube
m per side
Cylinder Radius
3m High
1 1 1 1.75
2 1 2 3
3 2 3 5.25
4 3 4 9.25
5 4 6 16
6 6 9 27.75
7 8 13 48
8 12 19 83
9 17 27 143.5
10 24 39 248.5
11 35 56 430.75
12 50 81 746
13 72 117 1 km
14 105 168 2 km
15 151 243 4 km
16 217 350 7 km
17 314 505 11 km
18 452 729 20 km
19 652 1,051 34 km
20 941 1,516 60 km

Area of Effect Nuances

Caster’s do not have to use circles or cubes. They can shape the spell how they want. The general rule is that you need to be able to visualize the area. For example, a circular area with three “holes” is easy to imagine. Picking all the friendly soldiers on the battlefield is not. A caster can visualize a number of holes equal to their Quickness The chart below shows the minimum sides of an area that a caster can use. In other words, a caster cannot create spell with a 0m side and therefore make the spell infinitely large.

Magical Theory Skill Minimum Side Magical Theory Skill Minimum Side
1 1m 6 0.5m
2 0.9m 7 0.4m
3 0.8m 8 0.3m
4 0.7m 9 0.2m
5 0.6m 10+ 0.1m

Useful Formulas

Cone

A cone's volume depends on two factors: <math>r</math> (Radius) and <math>h</math> (height) Volume-of-cone.png

Other useful iterations are:

  • To determine the height when the radius is known: <math>r=\sqrt{\frac{3v}{\pi h}}</math>
  • To determine the radius when the height is known: <math>h=\frac{3v}{\pi r^2}</math>

Dome

Sphere's have the problem that, in many instances, the bottom of the sphere is below ground. The caster doesn't really need a full sphere, a dome is sufficient. The formula for a dome depends on whether the caster is using a full half sphere or a smaller cap. The volume of the spherical cap and the area of the curved surface may be calculated using combinations of

  • The radius <math>r</math> of the sphere
  • The radius <math>a</math> of the base of the cap
  • The height <math>h</math> of the cap
Dome.gif

<math>v=\frac{\pi h^2}{3}(3r-h)</math>

Most commonly, the caster will be casting a hemisphere, where the r and a are equivalent. In this case, to determine the radius from the volume, use this formula:

v=(2/3)PI()r^3

<math>r=(\frac{3v}{2 \pi})^\frac{1}{3}</math>