mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 21:32:20 +02:00
55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
// Copyright 2017 The Ebiten Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// +build js
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package affine
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import (
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"github.com/gopherjs/gopherjs/js"
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)
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func elements(values string, dim int) []float64 {
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if values == "" {
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result := make([]float64, dim*(dim-1))
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for i := 0; i < dim-1; i++ {
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result[i*dim+i] = 1
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}
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return result
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}
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a := js.NewArrayBuffer([]uint8(values))
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return js.Global.Get("Float64Array").New(a).Interface().([]float64)
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}
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func setElements(values []float64, dim int) string {
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a := js.NewArrayBuffer(make([]uint8, len(values)*8))
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a8 := js.Global.Get("Uint8Array").New(a)
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af64 := js.Global.Get("Float64Array").New(a)
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for i, v := range values {
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af64.SetIndex(i, v)
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}
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return string(a8.Interface().([]uint8))
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}
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func setElement(values string, dim int, i, j int, value float64) string {
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if values == "" {
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values = identityValues[dim]
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}
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a := js.NewArrayBuffer([]uint8(values))
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a8 := js.Global.Get("Uint8Array").New(a)
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af64 := js.Global.Get("Float64Array").New(a)
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af64.SetIndex(i*dim+j, value)
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return string(a8.Interface().([]uint8))
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}
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