48 lines
960 B
Go
48 lines
960 B
Go
package geos
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/*
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#cgo LDFLAGS: -lgeos_c
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#include "geos_c.h"
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#include <stdlib.h>
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*/
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import "C"
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type PreparedGeom struct {
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v *C.GEOSPreparedGeometry
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}
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func (this *Geos) Prepare(geom *Geom) *PreparedGeom {
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prep := C.GEOSPrepare_r(this.v, geom.v)
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if prep == nil {
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return nil
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}
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return &PreparedGeom{prep}
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}
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func (this *Geos) PreparedContains(a *PreparedGeom, b *Geom) bool {
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result := C.GEOSPreparedContains_r(this.v, a.v, b.v)
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if result == 1 {
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return true
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}
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// result == 2 -> exception (already logged to console)
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return false
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}
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func (this *Geos) PreparedIntersects(a *PreparedGeom, b *Geom) bool {
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result := C.GEOSPreparedIntersects_r(this.v, a.v, b.v)
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if result == 1 {
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return true
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}
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// result == 2 -> exception (already logged to console)
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return false
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}
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func (this *Geos) PreparedDestroy(geom *PreparedGeom) {
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if geom.v != nil {
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C.GEOSPreparedGeom_destroy_r(this.v, geom.v)
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geom.v = nil
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} else {
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log.Printf("double free?")
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}
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}
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