34 lines
888 B
Go
34 lines
888 B
Go
/*
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Copyright © 2025 filifa
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package lib
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type Point struct {
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X float64
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Y float64
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}
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func Area(points []Point) float64 {
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total := float64(0)
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n := len(points)
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for i, p := range points {
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q := points[(i+1)%n]
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total += (p.Y + q.Y) * (p.X - q.X)
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}
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return total / 2
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}
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