107 lines
2.5 KiB
Go
107 lines
2.5 KiB
Go
// Copyright 2021 Airbus Defence and Space
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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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package godal
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import "fmt"
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type srWKTOpts struct {
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errorHandler ErrorHandler
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}
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//WKTExportOption is an option that can be passed to SpatialRef.WKT()
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//
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// Available WKTExportOptions are:
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// - ErrLogger
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type WKTExportOption interface {
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setWKTExportOpt(sro *srWKTOpts)
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}
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type trnOpts struct {
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errorHandler ErrorHandler
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}
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// TransformOption is an option that can be passed to NewTransform
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//
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// Available TransformOptions are:
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// - ErrLogger
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type TransformOption interface {
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setTransformOpt(o *trnOpts)
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}
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func (sr *SpatialRef) setBoundsOpt(o *boundsOpts) {
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o.sr = sr
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}
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type boundsOpts struct {
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sr *SpatialRef
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errorHandler ErrorHandler
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}
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// BoundsOption is an option that can be passed to Dataset.Bounds or Geometry.Bounds
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//
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// Available options are:
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// - *SpatialRef
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// - ErrLogger
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type BoundsOption interface {
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setBoundsOpt(o *boundsOpts)
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}
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type createSpatialRefOpts struct {
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errorHandler ErrorHandler
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}
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// CreateSpatialRefOption is an option that can be passed when creating a new spatial
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// reference object
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//
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// Available options are:
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// - ErrLogger
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type CreateSpatialRefOption interface {
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setCreateSpatialRefOpt(so *createSpatialRefOpts)
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}
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func reprojectBounds(bnds [4]float64, src, dst *SpatialRef) ([4]float64, error) {
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var ret [4]float64
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trn, err := NewTransform(src, dst)
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if err != nil {
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return ret, fmt.Errorf("create coordinate transform: %w", err)
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}
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defer trn.Close()
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x := []float64{bnds[0], bnds[0], bnds[2], bnds[2]}
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y := []float64{bnds[1], bnds[3], bnds[3], bnds[1]}
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err = trn.TransformEx(x, y, nil, nil)
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if err != nil {
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return ret, fmt.Errorf("reproject bounds: %w", err)
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}
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ret[0] = x[0]
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ret[1] = y[0]
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ret[2] = x[0]
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ret[3] = y[0]
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for i := 1; i < 4; i++ {
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if x[i] < ret[0] {
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ret[0] = x[i]
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}
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if x[i] > ret[2] {
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ret[2] = x[i]
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}
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if y[i] < ret[1] {
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ret[1] = y[i]
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}
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if y[i] > ret[3] {
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ret[3] = y[i]
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}
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}
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return ret, nil
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}
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