ProjectCameraNormalMap

Overview

ProjectCameraNormalMap uses a camera frustum to directly apply a normal map texture to a material.

It uses the same setup as ProjectCameraMap_v2, requiring a projector object to directly apply the texture.

local projCam1 = Camera("projCam1")
{
   ["node xform"] = translate(0, 3, 75) * rotate(-5, 1, 0, 0) * rotate(90, 0, 1, 0),
   ["focal"] = 150,
   ["film width aperture"] = 24,
}

local projNormalMap = ProjectCameraNormalMap("projNormals") {
    ["projector"] = projCam1,
    ["texture"] = "myNormalTexture.tx",
    ["project_on_back_faces"] = false,
}

local mtl1 = DwaSolidDielectricMaterial("mtl1") {
    ["show diffuse"] = false,
    ["show specular"] = false,
    ["show emission"] = true,
    ["input_normal"] = projNormalMap,
}
Texture is applied via a camera frustum
Texture is applied via a camera frustum

Attribute Reference

General attributes

aspect_ratio_source

Int enum
  0 = “from texture” (default)
  1 = “custom”

Whether to use the image and pixel aspect ratio of the texture being projected, or a custom aspect ratio

custom_aspect_ratio

Float
default: 1.0

Custom aspect ratio for the projected texture to use when 'aspect_ratio_source' is set to 'custom'

normal_encoding

Int enum
  0 = “[0,1]” (default)
  1 = “[-1,1]”

Most normal maps are encoded [0,1]. Only certain rare floating point normal maps are encoded [-1,1]

project_on_back_faces

Bool
default: False

Toggles whether camera projections appear on back faces

projector

Camera
default: None

The camera to project from

texture

String filename
default:

Filename that points to a texture .exr or .tx file (must be mip-mapped and tiled with maketx).

use_reference_space

Bool
default: False

Use reference space position (ref_P) and normals (ref_N)