| 1 |
using System; |
| 2 |
using System.Collections.Generic; |
| 3 |
using Oni.Collections; |
| 4 |
|
| 5 |
namespace Oni.Dae |
| 6 |
{ |
| 7 |
internal class UnitConverter |
| 8 |
{ |
| 9 |
private Scene scene; |
| 10 |
private float scale; |
| 11 |
private Set<float[]> scaledValues; |
| 12 |
|
| 13 |
public static void Convert(Scene scene, float scale) |
| 14 |
{ |
| 15 |
var converter = new UnitConverter { |
| 16 |
scene = scene, |
| 17 |
scale = scale, |
| 18 |
scaledValues = new Set<float[]>() |
| 19 |
}; |
| 20 |
|
| 21 |
converter.Convert(); |
| 22 |
} |
| 23 |
|
| 24 |
private void Convert() |
| 25 |
{ |
| 26 |
Convert(scene); |
| 27 |
} |
| 28 |
|
| 29 |
private void Convert(Node node) |
| 30 |
{ |
| 31 |
foreach (var transform in node.Transforms) |
| 32 |
Convert(transform); |
| 33 |
|
| 34 |
foreach (var instance in node.Instances) |
| 35 |
Convert(instance); |
| 36 |
|
| 37 |
foreach (var child in node.Nodes) |
| 38 |
Convert(child); |
| 39 |
} |
| 40 |
|
| 41 |
private void Convert(Instance instance) |
| 42 |
{ |
| 43 |
var geometryInstance = instance as GeometryInstance; |
| 44 |
|
| 45 |
if (geometryInstance != null) |
| 46 |
{ |
| 47 |
Convert(geometryInstance.Target); |
| 48 |
return; |
| 49 |
} |
| 50 |
} |
| 51 |
|
| 52 |
private void Convert(Geometry geometry) |
| 53 |
{ |
| 54 |
foreach (var primitives in geometry.Primitives) |
| 55 |
{ |
| 56 |
// |
| 57 |
// TODO: this assumes that position sources are not reused. |
| 58 |
// |
| 59 |
|
| 60 |
foreach (var input in primitives.Inputs) |
| 61 |
{ |
| 62 |
if (input.Semantic == Semantic.Position) |
| 63 |
Scale(input.Source.FloatData, input.Source.Stride); |
| 64 |
} |
| 65 |
} |
| 66 |
} |
| 67 |
|
| 68 |
private void Convert(Transform transform) |
| 69 |
{ |
| 70 |
var translate = transform as TransformTranslate; |
| 71 |
|
| 72 |
if (translate != null) |
| 73 |
{ |
| 74 |
Scale(translate.Values, 3); |
| 75 |
|
| 76 |
if (translate.HasAnimations) |
| 77 |
{ |
| 78 |
for (int i = 0; i < translate.Animations.Length; i++) |
| 79 |
{ |
| 80 |
Sampler s = translate.Animations[i]; |
| 81 |
translate.Animations[i] = s == null ? null : s.Scale(scale); |
| 82 |
} |
| 83 |
} |
| 84 |
|
| 85 |
return; |
| 86 |
} |
| 87 |
|
| 88 |
var matrix = transform as TransformMatrix; |
| 89 |
|
| 90 |
if (matrix != null) |
| 91 |
{ |
| 92 |
matrix.Values[3] *= scale; |
| 93 |
matrix.Values[7] *= scale; |
| 94 |
matrix.Values[11] *= scale; |
| 95 |
|
| 96 |
return; |
| 97 |
} |
| 98 |
} |
| 99 |
|
| 100 |
private void Scale(float[] values, int stride) |
| 101 |
{ |
| 102 |
if (!scaledValues.Add(values)) |
| 103 |
return; |
| 104 |
|
| 105 |
for (int i = 0; i + stride - 1 < values.Length; i += stride) |
| 106 |
{ |
| 107 |
values[i + 0] *= scale; |
| 108 |
values[i + 1] *= scale; |
| 109 |
values[i + 2] *= scale; |
| 110 |
} |
| 111 |
} |
| 112 |
} |
| 113 |
} |
