55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
//go:build example
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// +build example
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/*
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Copyright 2021 Josh Deprez
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"fmt"
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"log"
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"github.com/DrJosh9000/ichigo/geom"
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)
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func main() {
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// Put your own points here!
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points := []geom.Float2{
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{X: -7, Y: -2},
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{X: -5, Y: 1},
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{X: -3, Y: 0},
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{X: -2, Y: -3},
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{X: 0, Y: 2},
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{X: 1, Y: -5},
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{X: 3, Y: -2},
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{X: 4, Y: 4},
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}
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cubic := &geom.CubicSpline{
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Points: points,
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FixedPreslope: true,
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FixedPostslope: true,
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Preslope: -5,
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Postslope: -4,
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}
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if err := cubic.Prepare(); err != nil {
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log.Fatalf("cubic.Prepare() = %v, want nil", err)
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}
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// Produce interpolated points in CSV-like form.
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for x := -8.0; x < 8.0; x += 0.0625 {
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fmt.Printf("%f,%f\n", x, cubic.Interpolate(x))
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}
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}
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