void IMouseHandler.canvas_MouseDown(object sender, GLMouseEventArgs e)
{
this.lastBindingMouseButtons = this.BindingMouseButtons;
if ((e.Button & this.lastBindingMouseButtons) != GLMouseButtons.None)
{
this.mouseDownFlag = true;
this.lastPosition = e.Location;
}
}
void IMouseHandler.canvas_MouseDown(object sender, GLMouseEventArgs e)
{
this.lastBindingMouseButtons = this.BindingMouseButtons;
if ((e.Button & this.lastBindingMouseButtons) != GLMouseButtons.None)
{
this.lastPosition = e.Location;
var control = sender as Control;
this.SetBounds(control.Width, control.Height);
this.mouseDownFlag = true;
PrepareCamera();
}
}
void IMouseHandler.canvas_MouseMove(object sender, GLMouseEventArgs e)
{
if (this.mouseDownFlag &&
((e.Button & this.lastBindingMouseButtons) != GLMouseButtons.None) &&
(e.X != lastPosition.x || e.Y != lastPosition.y))
{
IViewCamera camera = this.camera;
if (camera == null)
{
return;
}
vec3 back = this.back;
vec3 right = this.right;
vec3 up = this.up;
GUISize bound = this.bound;
ivec2 downPosition = this.lastPosition;
{
float deltaX = -this.HorizontalRotationFactor * (e.X - downPosition.x) / bound.Width;
float cos = (float)Math.Cos(deltaX);
float sin = (float)Math.Sin(deltaX);
vec3 newBack = new vec3(
back.x * cos + right.x * sin,
back.y * cos + right.y * sin,
back.z * cos + right.z * sin);
back = newBack;
right = up.cross(back);
back = back.normalize();
right = right.normalize();
}
{
float deltaY = this.VerticalRotationFactor * (e.Y - downPosition.y) / bound.Height;
float cos = (float)Math.Cos(deltaY);
float sin = (float)Math.Sin(deltaY);
vec3 newBack = new vec3(
back.x * cos + up.x * sin,
back.y * cos + up.y * sin,
back.z * cos + up.z * sin);
back = newBack;
up = back.cross(right);
back = back.normalize();
up = up.normalize();
}
camera.Position = camera.Target +
back * (float)((camera.Position - camera.Target).length());
camera.UpVector = up;
this.back = back;
this.right = right;
this.up = up;
this.lastPosition = e.Location;
}
}
void IMouseHandler.canvas_MouseMove(object sender, GLMouseEventArgs e)
{
if (this.mouseDownFlag &&
((e.Button & this.lastBindingMouseButtons) != GLMouseButtons.None) &&
(e.X != this.lastPosition.x || e.Y != this.lastPosition.y))
{
mat4 rotationMatrix = glm.rotate(this.HorizontalRotationSpeed * (e.X - this.lastPosition.x), -this.camera.UpVector);
var front = new vec4(this.camera.GetFront(), 1.0f);
vec4 front1 = rotationMatrix * front;
rotationMatrix = glm.rotate(this.VerticalRotationSpeed * (this.lastPosition.y - e.Y), this.camera.GetRight());
vec4 front2 = rotationMatrix * front1;
//front2 = front2.normalize();
this.camera.Target = this.camera.Position + new vec3(front2);
this.lastPosition = e.Location;
}
}
/// <summary>
/// Define a picking region.
/// </summary>
/// <param name="center">The center.</param>
/// <param name="delta">The delta.</param>
/// <param name="viewport">The viewport.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentOutOfRangeException"></exception>
public static mat4 pickMatrix(ivec2 center, ivec2 delta, ivec4 viewport)
{
if (delta.x <= 0 || delta.y <= 0)
{
throw new ArgumentOutOfRangeException();
}
var Result = new mat4(1.0f);
if (!(delta.x > (0f) && delta.y > (0f)))
{
return(Result); // Error
}
vec3 Temp = new vec3(
((viewport[2]) - (2f) * (center.x - (viewport[0]))) / delta.x,
((viewport[3]) - (2f) * (center.y - (viewport[1]))) / delta.y,
(0f));
// Translate and scale the picked region to the entire window
Result = translate(Result, Temp);
return(scale(Result, new vec3((float)(viewport[2]) / delta.x, (float)(viewport[3]) / delta.y, (1))));
}
/// <summary>
///
/// </summary>
/// <param name="xy"></param>
/// <param name="z"></param>
public ivec3(ivec2 xy, int z)
{
this.x = xy.x;
this.y = xy.y;
this.z = z;
}
