1// tPath.h 
2// 
3// This file implements scene splines and paths. 
4// 
5// Copyright (c) 2006, 2017 Tristan Grimmer. 
6// Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby 
7// granted, provided that the above copyright notice and this permission notice appear in all copies. 
8// 
9// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL 
10// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, 
11// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 
12// AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 
13// PERFORMANCE OF THIS SOFTWARE. 
14 
15#pragma once 
16#include <Math/tSpline.h> 
17#include "Scene/tObject.h" 
18namespace tScene 
19{ 
20 
21 
22class tPath : public tObject 
23{ 
24public: 
25 tPath() { } 
26 tPath(const tChunk& chunk) { Load(chunk); } 
27 tPath(const tMath::tBezierPath&, const tString& name, uint32 id); 
28 virtual ~tPath() { Clear(); } 
29 
30 enum class tType 
31 { 
32 Invalid = -1, 
33 PiecewiseLinear, 
34 CubicBezier, 
35 NonuniformNonrationalCubicBasis 
36 }; 
37 
38 bool IsValid() const { return Type != tType::Invalid; } 
39 void Scale(float scale) { for (int cv = 0; cv < NumControlVerts; cv++) ControlVerts[cv] *= scale; } 
40 void Clear() { tObject::Clear(); Type = tType::Invalid; IsClosed = false; NumControlVerts = 0; delete[] ControlVerts; ControlVerts = nullptr; } 
41 
42 void Save(tChunkWriter&) const; 
43 void Load(const tChunk&); 
44 
45 tType Type = tType::Invalid; 
46 bool IsClosed = false; 
47 int NumControlVerts = 0; 
48 tMath::tVector3* ControlVerts = nullptr; 
49}; 
50 
51 
52} 
53