63 lines
1.1 KiB
Go
63 lines
1.1 KiB
Go
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package lines
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import (
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"zworld/engine/object"
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"zworld/engine/object/mesh"
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"zworld/engine/renderapi/color"
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"zworld/engine/renderapi/vertex"
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"zworld/plugins/math/vec3"
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)
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type Lines struct {
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*mesh.Static
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Args
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}
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type Args struct {
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Lines []Line
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lineMesh vertex.MutableMesh[vertex.C, uint16]
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}
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func New(args Args) *Lines {
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b := object.NewComponent(&Lines{
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Static: mesh.NewLines(),
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Args: args,
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})
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b.lineMesh = vertex.NewLines(object.Key("lines", b), []vertex.C{}, []uint16{})
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b.VertexData.Set(b.lineMesh)
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b.Refresh()
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return b
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}
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func (li *Lines) Add(from, to vec3.T, clr color.T) {
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li.Lines = append(li.Lines, Line{
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Start: from,
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End: to,
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Color: clr,
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})
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}
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func (li *Lines) Clear() {
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li.Lines = li.Lines[:0]
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}
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func (li *Lines) Count() int {
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return len(li.Lines)
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}
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func (li *Lines) Refresh() {
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count := len(li.Lines)
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vertices := make([]vertex.C, 2*count)
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for i := 0; i < count; i++ {
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line := li.Lines[i]
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a := &vertices[2*i+0]
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b := &vertices[2*i+1]
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a.P = line.Start
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a.C = line.Color.Vec4()
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b.P = line.End
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b.C = line.Color.Vec4()
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}
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li.lineMesh.Update(vertices, []uint16{})
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}
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