Struct IntersectionMaterial

pub struct IntersectionMaterial {
    pub min_distance: Option<f32>,
    pub max_distance: Option<f32>,
    pub render_states: RenderStates,
    pub geometry_id: u32,
}

Used for intersection tests, see pick and ray_intersect. When rendering with this material, the output in each pixel is:

• Red channel: The depth (same as DepthMaterial).
• Green channel: The IntersectionMaterial::geometry_id.
• Blue channel: The gl_InstanceID.

Note: The geometry needs to pass the instance ID to the fragment shader, see Geometry for more information.

Fields

min_distance: Option<f32>

The minimum distance from the camera to any object. If None, then the near plane of the camera is used.

max_distance: Option<f32>

The maximum distance from the camera to any object. If None, then the far plane of the camera is used.

render_states: RenderStates

Render states.

geometry_id: u32

A geometry ID for the currently rendered geometry. The result is outputted in the green color channel.

Trait Implementations

impl Clone for IntersectionMaterial

fn clone(&self) -> IntersectionMaterial

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for IntersectionMaterial

fn default() -> IntersectionMaterial

Returns the “default value” for a type.

impl FromCpuMaterial for IntersectionMaterial

fn from_cpu_material(_context: &Context, _cpu_material: &CpuMaterial) -> Self

Creates a new material that can be used for rendering from a CpuMaterial.

impl Material for IntersectionMaterial

fn id(&self) -> EffectMaterialId

Returns a unique ID for each variation of the shader source returned from Material::fragment_shader_source.

fn fragment_shader_source(&self, _lights: &[&dyn Light]) -> String

Returns the fragment shader source for this material.

fn use_uniforms( &self, program: &Program, viewer: &dyn Viewer, _lights: &[&dyn Light], )

Sends the uniform data needed for this material to the fragment shader.

fn render_states(&self) -> RenderStates

Returns the render states needed to render with this material.

fn material_type(&self) -> MaterialType

Returns the type of material.