func main() {
pn := pane.New()
pn.SetZoom(4.0, 4.0)
pn.SetPan(100.0, 100.0)
ms := makeMeshes()
pn.Draw(ms...)
// loop and handle pointer events
for {
select {
case pntrEvnt := <-pn.PointerPipe:
switch pntrEvnt.Flvr {
case pane.DOWN:
pointerDown = true
fmt.Printf("pointer down at %v\n", pntrEvnt.Pos)
if pointAt(pntrEvnt.Pos) {
ms := makeMeshes()
pn.Draw(ms...)
}
case pane.UP:
fmt.Printf("pointer up at %v\n", pntrEvnt.Pos)
pointerDown = false
case pane.MOVE:
if pointerDown && (slctdC >= 0) {
moveC(pntrEvnt.Pos)
ms := makeMeshes()
pn.Draw(ms...)
}
}
}
}
}
func main() {
pn := pane.New()
var pointerDown bool
// build mesh
msh := mesh.Mesh{
Nmbr: 1,
Dpth: 1.0,
Vrts: []mgl32.Vec2{
{50, 50}, // {-1.0, -0.5}, // a 0
{150, 150}, // { 0.0, 0.5}, // b 1
{250, 50}, // { 1.0, -0.5}, // c 2
{50, 170}, // {-1.0, 0.7}, // d 3
{250, 130}, // { 1.0, 0.3}, // e 4
},
Clrs: []mgl32.Vec4{
{1.0, 0.0, 0.0, 1.0}, // a
{1.0, 0.0, 1.0, 1.0}, // b
{0.0, 0.0, 1.0, 1.0}, // c
{0.0, 1.0, 1.0, 1.0}, // d
{1.0, 1.0, 0.0, 1.0}, // e
},
Trngls: []mesh.Triangle{
{
Vnd: mesh.Nd{0, 1, 2},
Flvr: mesh.CONCAVE,
Cnd: mesh.Nd{0, 1, 0},
},
{
Vnd: mesh.Nd{1, 3, 0},
Flvr: mesh.CONVEX,
Cnd: mesh.Nd{1, 2, 1},
},
{
Vnd: mesh.Nd{2, 4, 1},
Cnd: mesh.Nd{4, 0, 4},
},
},
}
m2 := makeTriangle(2, 0.0, mgl32.Vec2{100, 100})
pn.SetZoom(2.0, 2.0)
pn.SetPan(0.0, 50.0)
// add meshes to pane and draw them
pn.Draw(msh, m2)
// loop and handle pointer events
for {
select {
case pntrEvnt := <-pn.PointerPipe:
switch pntrEvnt.Flvr {
case pane.DOWN:
pointerDown = true
fmt.Printf("pointer down at %v\n", pntrEvnt.Pos)
msh.Vrts[0] = pntrEvnt.Pos
pn.Draw(msh)
case pane.UP:
fmt.Printf("pointer up at %v\n", pntrEvnt.Pos)
pointerDown = false
case pane.MOVE:
if pointerDown {
msh.Vrts[0] = pntrEvnt.Pos
pn.Draw(msh)
}
}
}
}
}