blob: 289f1bc6eb87c7d543c6453b6d2fe384a11cc803 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
#ifndef LLMR_GEOMETRY_LINE_BUFFER
#define LLMR_GEOMETRY_LINE_BUFFER
#include "buffer.hpp"
namespace llmr {
class LineVertexBuffer : public Buffer<
8 // 2 coordinates per vertex + 1 linesofar + 1 extrude coord pair == 4 (== 8 bytes)
> {
public:
typedef int16_t vertex_type;
/*
* Scale the extrusion vector so that the normal length is this value.
* Contains the "texture" normals (-1..1). This is distinct from the extrude
* normals for line joins, because the x-value remains 0 for the texture
* normal array, while the extrude normal actually moves the vertex to create
* the acute/bevelled line join.
*/
static const int8_t extrudeScale = 63;
/*
* Add a vertex to this buffer
*
* @param {number} x vertex position
* @param {number} y vertex position
* @param {number} ex extrude normal
* @param {number} ey extrude normal
* @param {number} tx texture normal
* @param {number} ty texture normal
*/
size_t add(vertex_type x, vertex_type y, float ex, float ey, int8_t tx, int8_t ty, int32_t linesofar = 0);
};
}
#endif
|
