Ray-casting algorithm: Difference between revisions
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<lang scala>package ray_casting |
<lang scala>package ray_casting |
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import java.lang.Double. |
import java.lang.Double.MAX_VALUE |
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import java.lang. |
import java.lang.Double.MIN_VALUE |
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import java.lang.Math.abs |
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data class Point(val x: Double, val y: Double) |
data class Point(val x: Double, val y: Double) |
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s.y > e.y -> Edge(e, s).invoke(p) |
s.y > e.y -> Edge(e, s).invoke(p) |
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p.y == s.y || p.y == e.y -> invoke(Point(p.x, p.y + epsilon)) |
p.y == s.y || p.y == e.y -> invoke(Point(p.x, p.y + epsilon)) |
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p.y > e.y || p.y < s.y || p.x > max(s.x, e.x) -> false |
p.y > e.y || p.y < s.y || p.x > Math.max(s.x, e.x) -> false |
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p.x < min(s.x, e.x) -> true |
p.x < Math.min(s.x, e.x) -> true |
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else -> { |
else -> { |
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val blue = if (abs(s.x - p.x) > MIN_VALUE) (p.y - s.y) / (p.x - s.x) else MAX_VALUE |
val blue = if (abs(s.x - p.x) > MIN_VALUE) (p.y - s.y) / (p.x - s.x) else MAX_VALUE |
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