func (c *Camera) Tick() {
moveSpeed := float32(0.1)
movement := [4]float32{}
if input.IsKeyDown(glfw.KeyUp) || input.IsKeyDown('W') {
movement[2] += moveSpeed
}
if input.IsKeyDown(glfw.KeyDown) || input.IsKeyDown('S') {
movement[2] -= moveSpeed
}
if input.IsKeyDown(glfw.KeyLeft) || input.IsKeyDown('A') {
movement[0] -= moveSpeed
}
if input.IsKeyDown(glfw.KeyRight) || input.IsKeyDown('D') {
movement[0] += moveSpeed
}
c.UpdateRotation()
m := matrix.MakeRotationMatrix(c.pitch, 1, 0, 0)
m = m.Multiply(matrix.MakeRotationMatrix(c.yaw, 0, 1, 0))
movement = m.MultiplyPoint(movement)
c.eyePosition[0] += movement[0]
c.eyePosition[1] += movement[1]
c.eyePosition[2] += movement[2]
c.UpdateModelViewMatrix()
}
func (c *Camera) UpdateModelViewMatrix() {
c.modelViewMatrix = matrix.MakeRotationMatrix(c.pitch, 1, 0, 0)
c.modelViewMatrix = c.modelViewMatrix.Multiply(matrix.MakeRotationMatrix(c.yaw, 0, 1, 0))
c.modelViewMatrix = c.modelViewMatrix.Multiply(matrix.MakeTranslationMatrix(-c.eyePosition[0], -c.eyePosition[1], -c.eyePosition[2]))
c.modelViewMatrix.Transpose()
}