Intersection

Intersection samples show different cases of intersection detection:

This sample demonstrates how to launch and manage a large number of asynchronous ray-based intersection queries simultaneously.

The results are visualized in real time and latency statistics are displayed for performance analysis.

In this sample, an emitter object continuously rotates and moves vertically, casting rays in multiple directions (slices and stacks) to detect intersections with objects in the world. Each ray is handled asynchronously.

All active requests are monitored for completion. Once finished, the results (intersection points and normals) are visualized using Visualizer tools. A latency histogram is computed based on how many frames passed between the request and response, and the results are displayed in the UI.

The sample uses double-buffering for safe multi-threaded access and demonstrates efficient scheduling of a high number of asynchronous operations. This approach is useful for stress-testing intersection systems, profiling async request latency, or building interactive tools relying on high-frequency spatial queries.

This sample demonstrates how to perform a single asynchronous intersection query based on the user's mouse cursor position in the scene. The result includes the hit point and surface normal, which are visualized in the scene, along with latency information.

The sample demonstrates detection of intersections with all objects in the world using a combination of World::getIntersection() and Landscape::getIntersection() methods. A single ray is cast from the current camera position through the mouse cursor. If the ray intersects with any geometry, the hit point and surface normal are rendered using Visualizer. Intersection queries are handled asynchronously. A callback processes the result and records latency in frames. The average and maximum latency values are updated in real time and shown in the sample UI.

This setup demonstrates how to implement non-blocking intersection queries suitable for object selection or similar real-time input-driven interactions.