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filter_attribute.go
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/
filter_attribute.go
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package meshops
import (
"github.com/EliCDavis/polyform/modeling"
"github.com/EliCDavis/vector/vector2"
"github.com/EliCDavis/vector/vector3"
"github.com/EliCDavis/vector/vector4"
)
type FilterFloat1Transformer struct {
Attribute string
Filter func(v float64) bool
}
func (fft FilterFloat1Transformer) Transform(m modeling.Mesh) (results modeling.Mesh, err error) {
if err = RequireV1Attribute(m, fft.Attribute); err != nil {
return
}
return FilterFloat1(m, fft.Attribute, fft.Filter), nil
}
func FilterFloat1(m modeling.Mesh, attribute string, filter func(v float64) bool) modeling.Mesh {
check(RequireV1Attribute(m, attribute))
vertices := m.Float1Attribute(attribute)
verticeToKeep := make(map[int]struct{}, 0)
for i := 0; i < vertices.Len(); i++ {
if filter(vertices.At(i)) {
verticeToKeep[i] = struct{}{}
}
}
indices := m.Indices()
finalIndices := make([]int, 0)
for i := 0; i < indices.Len(); i++ {
if _, ok := verticeToKeep[indices.At(i)]; ok {
finalIndices = append(finalIndices, i)
}
}
return RemovedUnreferencedVertices(m.SetIndices(finalIndices))
}
// FLOAT 2 ====================================================================
type FilterFloat2Transformer struct {
Attribute string
Filter func(v vector2.Float64) bool
}
func (fft FilterFloat2Transformer) Transform(m modeling.Mesh) (results modeling.Mesh, err error) {
if err = RequireV2Attribute(m, fft.Attribute); err != nil {
return
}
return FilterFloat2(m, fft.Attribute, fft.Filter), nil
}
func FilterFloat2(m modeling.Mesh, attribute string, filter func(v vector2.Float64) bool) modeling.Mesh {
check(RequireV2Attribute(m, attribute))
vertices := m.Float2Attribute(attribute)
verticeToKeep := make(map[int]struct{}, 0)
for i := 0; i < vertices.Len(); i++ {
if filter(vertices.At(i)) {
verticeToKeep[i] = struct{}{}
}
}
indices := m.Indices()
finalIndices := make([]int, 0)
for i := 0; i < indices.Len(); i++ {
if _, ok := verticeToKeep[indices.At(i)]; ok {
finalIndices = append(finalIndices, i)
}
}
return RemovedUnreferencedVertices(m.SetIndices(finalIndices))
}
// FLOAT 3 ====================================================================
type FilterFloat3Transformer struct {
Attribute string
Filter func(v vector3.Float64) bool
}
func (fft FilterFloat3Transformer) Transform(m modeling.Mesh) (results modeling.Mesh, err error) {
if err = RequireV3Attribute(m, fft.Attribute); err != nil {
return
}
return FilterFloat3(m, fft.Attribute, fft.Filter), nil
}
func FilterFloat3(m modeling.Mesh, attribute string, filter func(v vector3.Float64) bool) modeling.Mesh {
check(RequireV3Attribute(m, attribute))
vertices := m.Float3Attribute(attribute)
verticeToKeep := make(map[int]struct{}, 0)
for i := 0; i < vertices.Len(); i++ {
if filter(vertices.At(i)) {
verticeToKeep[i] = struct{}{}
}
}
indices := m.Indices()
finalIndices := make([]int, 0)
for i := 0; i < indices.Len(); i++ {
if _, ok := verticeToKeep[indices.At(i)]; ok {
finalIndices = append(finalIndices, i)
}
}
return RemovedUnreferencedVertices(m.SetIndices(finalIndices))
}
// FLOAT 4 ====================================================================
type FilterFloat4Transformer struct {
Attribute string
Filter func(v vector4.Float64) bool
}
func (fft FilterFloat4Transformer) Transform(m modeling.Mesh) (results modeling.Mesh, err error) {
if err = RequireV4Attribute(m, fft.Attribute); err != nil {
return
}
return FilterFloat4(m, fft.Attribute, fft.Filter), nil
}
func FilterFloat4(m modeling.Mesh, attribute string, filter func(v vector4.Float64) bool) modeling.Mesh {
check(RequireV4Attribute(m, attribute))
vertices := m.Float4Attribute(attribute)
verticeToKeep := make(map[int]struct{}, 0)
for i := 0; i < vertices.Len(); i++ {
if filter(vertices.At(i)) {
verticeToKeep[i] = struct{}{}
}
}
indices := m.Indices()
finalIndices := make([]int, 0)
for i := 0; i < indices.Len(); i++ {
if _, ok := verticeToKeep[indices.At(i)]; ok {
finalIndices = append(finalIndices, i)
}
}
return RemovedUnreferencedVertices(m.SetIndices(finalIndices))
}