ZFX + Developia

Code: Alles auswählen

public class MouseRay
{
    public vec3 CurrentRay { get; set; }
    public mat4 ProjectionMatrix { get; set; }
    public mat4 ViewMatrix { get; set; }
    public Camera Camera { get; set; }


    public MouseRay(Camera camera)
    {
        this.Camera = camera;
    }

    private void GenerateMatrix(Camera camera)
    {
        vec3 cameraPosition = camera.Location.ToGlmVec3();
        Vec3 cameraFront = Utils.CalculateCameraFront2(camera);

        ProjectionMatrix = mat4.Perspective(Utils.ToRadians(45.0f), camera.Size.X / camera.Size.Y, camera.Near, camera.Far);
        ViewMatrix = mat4.LookAt(cameraPosition, cameraPosition + cameraFront.ToGlmVec3(), new vec3(0.0f, 1.0f, 0.0f));
    }

    public Vec3 RayCast(float mouseX, float mouseY, Viewport viewport)
    {
        this.GenerateMatrix(this.Camera);
        var ndc = GetNDC(mouseX, mouseY, viewport);
        var clip = new vec4(ndc.x, ndc.y, -1f, 1f);
        var eye = GetEyeCords(clip);
        vec3 ray_wor = GetWorldCords(eye);
        return new Vec3(ray_wor);
    }

    private vec3 GetWorldCords(vec4 eye)
    {
        vec3 rey_wor = (ViewMatrix.Inverse * eye).xyz;
        return rey_wor.Normalized;
    }

    public vec4 GetEyeCords(vec4 clip)
    {
        vec4 ray_eye = ProjectionMatrix.Inverse * clip;
        return new vec4(ray_eye.x, ray_eye.y, -1f, 0f);
    }

    public vec2 GetNDC(float x, float y, Viewport viewport) 
    {
        float ndcX = (2.0f * x) / viewport.Width - 1.0f;
        float ndcY = 1.0f - (2.0f * y) / viewport.Height;
        return new vec2(ndcX, -ndcY);
    }
}

Code: Alles auswählen

                start = this.Camera.Location;
                end = MouseRay.RayCast(e.X, e.Y, Viewport);

                foreach (var layer in this.Scene.Layer)
                {
                    foreach (var entity in layer.Elements)
                    {
                        StaticMeshBehavior staticMeshBehavior = (StaticMeshBehavior)entity.GetBehavior<StaticMeshBehavior>();
                        if (staticMeshBehavior != null)
                        {
                            Genesis.Physics.Aabb aabb = Genesis.Physics.Aabb.FromBulletRigidBody(staticMeshBehavior.RigidBody);
                            if (Genesis.Physics.Aabb.IntersectRay(start, end, aabb.Min, aabb.Max))
                            {
                                MessageBox.Show("contact");
                            }
                        }
                    }
                }

Code: Alles auswählen

        private vec3 GetWorldCords(vec4 eye)
        {
            vec3 rey_wor = (ViewMatrix.Inverse * eye).xyz;
            return rey_wor.Normalized;
        }