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using System; |
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using System.Collections.Generic; |
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|
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namespace Oni.Totoro |
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{ |
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internal class AnimationDaeReader |
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{ |
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private Animation animation; |
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private Dae.Scene scene; |
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private int startFrame; |
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private int endFrame; |
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private Body body; |
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private int frameCount; |
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|
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public void Read(Animation targetAnimation) |
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{ |
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animation = targetAnimation; |
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|
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body = BodyDaeReader.Read(scene); |
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|
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ComputeFrameCount(); |
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ImportTranslation(); |
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ImportRotations(); |
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animation.ComputeExtents(body); |
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} |
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|
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public Dae.Scene Scene |
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{ |
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get { return scene; } |
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set { scene = value; } |
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} |
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|
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public int StartFrame |
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{ |
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get { return startFrame; } |
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set { startFrame = value; } |
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} |
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|
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public int EndFrame |
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{ |
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get { return endFrame; } |
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set { endFrame = value; } |
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} |
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|
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private void ComputeFrameCount() |
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{ |
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float maxTime = float.MinValue; |
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|
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var inputs = body.Nodes |
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.SelectMany(n => n.DaeNode.Transforms).Where(t => t.HasAnimations) |
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.SelectMany(t => t.Animations).Where(a => a != null) |
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.SelectMany(a => a.Inputs).Where(i => i.Semantic == Dae.Semantic.Input); |
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|
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foreach (var input in inputs) |
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maxTime = Math.Max(maxTime, input.Source.FloatData.Max()); |
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|
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float maxFrameF = maxTime * 60.0f; |
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int maxFrame; |
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|
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if (maxFrameF - Math.Round(maxFrameF) < 0.0005) |
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maxFrame = FMath.RoundToInt32(maxFrameF); |
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else |
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maxFrame = FMath.TruncateToInt32(maxFrameF); |
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|
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//Console.Error.WriteLine("Info: The last keyframe time is {0}s. The animation length is {1} (at 60fps).", |
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// maxTime, maxFrame + 1); |
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|
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if (endFrame == 0) |
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{ |
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endFrame = maxFrame; |
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} |
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else if (endFrame > maxFrame) |
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{ |
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Console.Error.WriteLine("Warning: the specified animation end frame ({0}) is beyond the last key frame ({1}), using the last frame instead", endFrame, maxFrame); |
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endFrame = maxFrame; |
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} |
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|
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if (startFrame >= maxFrame) |
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{ |
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Console.Error.WriteLine("Warning: the specified animation start frame ({0}) is beyond the last key frame ({1}), using 0 instead", startFrame, maxFrame); |
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startFrame = 0; |
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} |
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|
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frameCount = endFrame - startFrame; |
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} |
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|
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private void ImportTranslation() |
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{ |
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var rootNode = body.Nodes[0].DaeNode; |
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var translate = rootNode.Transforms[0] as Dae.TransformTranslate; |
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|
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if (translate == null) |
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{ |
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animation.Heights.AddRange(Enumerable.Repeat(0.0f, frameCount)); |
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animation.Velocities.AddRange(Enumerable.Repeat(Vector2.Zero, frameCount)); |
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} |
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else |
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{ |
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animation.Heights.AddRange(Sample(translate, 1, endFrame - 1)); |
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|
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var x = Sample(translate, 0, endFrame); |
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var z = Sample(translate, 2, endFrame); |
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|
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for (int i = 1; i < x.Length; i++) |
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animation.Velocities.Add(new Vector2(x[i] - x[i - 1], z[i] - z[i - 1])); |
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} |
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} |
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|
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private void ImportRotations() |
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{ |
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animation.FrameSize = 16; |
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|
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foreach (var node in body.Nodes.Select(n => n.DaeNode)) |
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{ |
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var keys = new List<KeyFrame>(); |
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animation.Rotations.Add(keys); |
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|
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var rotations = new List<Dae.TransformRotate>(); |
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var angles = new List<float[]>(); |
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|
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foreach (var transform in node.Transforms) |
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{ |
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var rotate = transform as Dae.TransformRotate; |
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|
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if (rotate != null) |
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{ |
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rotations.Add(rotate); |
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angles.Add(Sample(rotate, 3, endFrame - 1)); |
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} |
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} |
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|
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for (int i = 0; i < frameCount; i++) |
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{ |
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var q = Quaternion.Identity; |
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|
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for (int j = 0; j < rotations.Count; j++) |
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q *= Quaternion.CreateFromAxisAngle(rotations[j].Axis, MathHelper.ToRadians(angles[j][i])); |
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|
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keys.Add(new KeyFrame { |
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Duration = 1, |
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Rotation = q.ToVector4() |
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}); |
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} |
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} |
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} |
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|
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private float[] Sample(Dae.Transform transform, int index, int endFrame) |
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{ |
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Dae.Sampler sampler = null; |
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|
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if (transform.HasAnimations) |
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sampler = transform.Animations[index]; |
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|
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if (sampler == null) |
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{ |
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var value = transform.Values[index]; |
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var values = new float[endFrame - startFrame + 1]; |
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|
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for (int i = 0; i < values.Length; i++) |
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values[i] = value; |
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|
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return values; |
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} |
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|
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return sampler.Sample(startFrame, endFrame); |
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} |
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} |
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} |
