66 lines
2.1 KiB
Go
66 lines
2.1 KiB
Go
package main
|
|
|
|
import (
|
|
"log"
|
|
|
|
"github.com/deadsy/sdfx/sdf"
|
|
v2 "github.com/deadsy/sdfx/vec/v2"
|
|
v3 "github.com/deadsy/sdfx/vec/v3"
|
|
)
|
|
|
|
func loggedMovement(input sdf.SDF2, displacement sdf.V2, label string) sdf.SDF2 {
|
|
output := sdf.Transform2D(input, sdf.Translate2d(displacement))
|
|
log.Printf("Moving %v by X: %v, Y: %v\n", label, displacement.X, displacement.Y)
|
|
return output
|
|
}
|
|
|
|
// trapezoid creates a trapezoid from a vector, base is a v2.Vector, xChange modifies the top half.
|
|
// positive xChange values make the top half larger, negative xChange values make the top half smaller.
|
|
func trapezoid(base v2.Vec, xChange float64) sdf.SDF2 {
|
|
dimensions := v2.VecSet{
|
|
v2.Vec{X: 0, Y: 0},
|
|
v2.Vec{X: -xChange, Y: base.Y},
|
|
v2.Vec{X: base.X + xChange, Y: base.Y},
|
|
v2.Vec{X: base.X, Y: 0},
|
|
}
|
|
|
|
trapezoid, err := sdf.Polygon2D(dimensions)
|
|
if err != nil {
|
|
log.Printf("error: %v\nReturning unmodified base.\n", err)
|
|
return sdf.Box2D(base, 0)
|
|
}
|
|
|
|
trapezoid = sdf.Center2D(trapezoid)
|
|
|
|
return trapezoid
|
|
}
|
|
|
|
// split2DPlane splits a 2D plane in half. 0 is right side and 1 is left side.
|
|
func split2DPlane(plane sdf.SDF2, height float64) []sdf.SDF2 {
|
|
planes := make([]sdf.SDF2, 2)
|
|
|
|
rPlane := sdf.Cut2D(plane, v2.Vec{X: 0, Y: 0}, v2.Vec{X: 0, Y: 1})
|
|
planes[0] = rPlane
|
|
|
|
lPlane := sdf.Transform2D(sdf.Cut2D(sdf.Transform2D(plane, sdf.MirrorY()), v2.Vec{X: 0, Y: 0}, v2.Vec{X: 0, Y: 1}), sdf.MirrorY())
|
|
planes[0] = lPlane
|
|
|
|
return planes
|
|
}
|
|
|
|
// split3DModel splits a 3D model in half. 0 is right side and 1 is left side.
|
|
func split3DModel(model sdf.SDF3) []sdf.SDF3 {
|
|
models := make([]sdf.SDF3, 2)
|
|
//plane := sdf.Slice2D(model, v3.Vec{X: 0, Y: 0, Z: 0}, v3.Vec{X: 0, Y: 0, Z: 0})
|
|
|
|
//rPlane := sdf.Cut2D(plane, v2.Vec{X: 0, Y: 0}, v2.Vec{X: 0, Y: 1})
|
|
rModel := sdf.Cut3D(model, v3.Vec{X: 0, Y: 0, Z: 0}, v3.Vec{X: 0, Y: 1, Z: 0})
|
|
models[0] = rModel
|
|
|
|
//lPlane := sdf.Transform2D(sdf.Cut2D(sdf.Transform2D(plane, sdf.MirrorY()), v2.Vec{X: 0, Y: 0}, v2.Vec{X: 0, Y: 1}), sdf.MirrorY())
|
|
lModel := sdf.Transform3D(sdf.Cut3D(sdf.Transform3D(model, sdf.MirrorXY()), v3.Vec{X: 0, Y: 0, Z: 0}, v3.Vec{X: 0, Y: 1, Z: 0}), sdf.MirrorXY())
|
|
models[1] = lModel
|
|
|
|
return models
|
|
}
|