Vertex

JSON

Format

{
	"x": 0,
	"y": 0,
	"z": 0,
	"skinIndex": [0,0,0,0],
	"skinWeight": [0,0,0,0]
}

Type

type DashVertex = {
	x: number,
	y: number,
	z: number,
	skinIndex: number[] | undefined;
	skinWeight: number[] | undefined;
}

Fields

x

The x-axis coordinate for a given vertex.

Reference: https://threejs.org/docs/#api/en/math/Vector3.x

y

The y-axis coordinate for a given vertex.

Reference: https://threejs.org/docs/#api/en/math/Vector3.y

z

The z-axis coordinate for a given vertex.

Reference: https://threejs.org/docs/#api/en/math/Vector3.z

skinIndex

The index of the bones which influence this vertex. Expected format is an array of integers with a length of four or less. skinWeight must also be defined for this to have any effect.

In this case in which the defined vertex does not require skinning, this field does not need to be defined.

Default: [0,0,0,0]

skinWeight

The weight for which each bone influences the vertex. Expected format is an array of floats that equals the array length of skinIndex. Foreach index a float between 0 and 1 is expected to assign the weight of which bone transformations are to be applied to the vertex.

Default: [0,0,0,0]

Binary

Struct

typedef struct {
  uint32_t index;
  float x;
  float y;
  float z;
  uint32_t skinIndex[4];
  float skinWeight[4];
} DashVertex;

Table

Offset	0x00	0x04	0x08	0x0c
0x0000	index	x	y	z
0x0010	skinIndex[0]	skinIndex[1]	skinIndex[2]	skinIndex[3]
0x0020	skinWeight[0]	skinWeight[1]	skinWeight[2]	skinWeight[3]

Fields

x

The x-axis coordinate for a given vertex.

Default: 0.0f

Reference: https://threejs.org/docs/#api/en/math/Vector3.x

y

The y-axis coordinate for a given vertex.

Default: 0.0f

Reference: https://threejs.org/docs/#api/en/math/Vector3.y

z

The z-axis coordinate for a given vertex.

Default: 0.0f

Reference: https://threejs.org/docs/#api/en/math/Vector3.z

skinIndex

The index of the bones which influence this vertex. Expected format is an array of integers with a length of four or less. skinWeight must also be defined for this to have any effect.

In this case in which the defined vertex does not require skinning, this field does not need to be defined.

Default: { 0,0,0,0 }

skinWeight

The weight for which each bone influences the vertex. Expected format is an array of floats that equals the array length of skinIndex. Foreach index a float between 0 and 1 is expected to assign the weight of which bone transformations are to be applied to the vertex.

Default: { 0.0f, 0.0f, 0.0f, 0.0f }

Limiations

• skinIndex and skinWeight add a lot of space for non-skinned meshes

• do we want to declare a way to toggle between skinned and non-skinned meshes for the file type?