67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package main
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import "surdeus.su/core/gg/ox"
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import "surdeus.su/core/gg/mx"
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import "surdeus.su/core/gg"
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import "log"
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var (
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camera *Camera
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)
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type Camera struct {
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ox.Camera
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ScaleSpeed mx.Float
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RotationSpeed mx.Float
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}
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func NewCamera() *Camera {
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camera := &Camera{}
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camera.Camera = ox.NewCamera()
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camera.ScaleSpeed = 5.
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camera.RotationSpeed = .3
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return camera
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}
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func (cam *Camera) OnUpdate(c gg.Context) {
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dt := c.Engine().DT().Seconds()
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mov := c.Events().Mouse.Move
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wheel := c.Events().Mouse.WheelChange
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shiftPressed := c.Engine().IsPressed(gg.KeyShift)
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d := float64(1.)
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if shiftPressed {
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d *= -1
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}
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// Moving.
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if mov != nil && c.Engine().IsButtoned(
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gg.MouseButtonRight,
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) {
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cam.Move(mov.AbsDelta)
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}
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// Scale.
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if wheel != nil {
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k := 1.5
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log.Println(wheel.Offset.Y)
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if wheel.Offset.Y < 0 {
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k = 1/k
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}
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cam.Scale(mx.V2(
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k,
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//wheel.Offset.Y * dt * cam.ScaleSpeed * 40,
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))
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}
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// Scale and rotation.
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for _, key := range c.Engine().GetKeyboardKeys() {
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switch key {
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case gg.KeyF:
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cam.AddScale(mx.V2(d*cam.ScaleSpeed * dt))
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case gg.KeyR:
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cam.Rotate(d*mx.Pi * cam.ScaleSpeed * dt)
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}
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}
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}
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