func (rv *RoomViewer) Drag(dx, dy float64) {
v := mathgl.Vec3{X: rv.fx, Y: rv.fy}
vx := mathgl.Vec3{1, -1, 0}
vx.Normalize()
vy := mathgl.Vec3{1, 1, 0}
vy.Normalize()
vx.Scale(float32(dx) / rv.zoom * 2)
vy.Scale(float32(dy) / rv.zoom * 2)
v.Add(&vx)
v.Add(&vy)
rv.fx, rv.fy = v.X, v.Y
rv.makeMat()
}
func (hv *HouseViewer) Drag(dx, dy float64) {
v := mathgl.Vec3{X: hv.fx, Y: hv.fy}
vx := mathgl.Vec3{1, -1, 0}
vx.Normalize()
vy := mathgl.Vec3{1, 1, 0}
vy.Normalize()
vx.Scale(float32(dx) / hv.zoom * 2)
vy.Scale(float32(dy) / hv.zoom * 2)
v.Add(&vx)
v.Add(&vy)
if hv.bounds.on {
hv.fx = clamp(v.X, hv.bounds.min.x, hv.bounds.max.x)
hv.fy = clamp(v.Y, hv.bounds.min.y, hv.bounds.max.y)
} else {
hv.fx, hv.fy = v.X, v.Y
}
hv.target_on = false
}