1 | #ifndef NX_PHYSICS_NXDISTANCEJOINTDESC
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2 | #define NX_PHYSICS_NXDISTANCEJOINTDESC
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3 | /*----------------------------------------------------------------------------*\
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4 | |
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5 | | Public Interface to NovodeX Technology
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6 | |
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7 | | www.novodex.com
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8 | |
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9 | \*----------------------------------------------------------------------------*/
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10 | /** \addtogroup physics
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11 | @{
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12 | */
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13 |
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14 | #include "Nxp.h"
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15 | #include "NxJointDesc.h"
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16 | #include "NxSpringDesc.h"
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17 |
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18 | /**
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19 | \brief Desc class for distance joint. See #NxDistanceJoint.
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20 |
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21 | <b>Platform:</b>
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22 | \li PC SW: Yes
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23 | \li PPU : No
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24 | \li PS3 : Yes
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25 | \li XB360: Yes
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26 |
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27 | @see NxDistanceJoint NxJointDesc NxScene.createJoint()
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28 |
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29 | */
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30 | class NxDistanceJointDesc : public NxJointDesc
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31 | {
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32 | public:
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33 |
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34 | /**
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35 | \brief The maximum rest length of the rope or rod between the two anchor points.
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36 |
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37 | <b>Range:</b> [#minDistance,inf)<br>
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38 | <b>Default:</b> 0.0
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39 | */
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40 | NxReal maxDistance;
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41 |
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42 | /**
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43 | \brief The minimum rest length of the rope or rod between the two anchor points
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44 |
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45 | <b>Range:</b> [0,#maxDistance]<br>
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46 | <b>Default:</b> 0.0
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47 | */
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48 | NxReal minDistance;
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49 |
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50 | /*
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51 | \brief How stiff the constraint is, between 0 and 1 (stiffest)
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52 |
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53 | <b>Range:</b> [0,1]<br>
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54 | <b>Default:</b> 1.0
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55 | */
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56 | //NxReal stiffness;
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57 |
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58 | /**
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59 | \brief makes the joint springy. The spring.targetValue field is not used.
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60 |
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61 | <b>Range:</b> See #NxSpringDesc<br>
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62 | <b>Default:</b> See #NxSpringDesc
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63 | */
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64 | NxSpringDesc spring;
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65 |
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66 | /**
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67 | \brief This is a combination of the bits defined by ::NxDistanceJointFlag.
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68 |
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69 | <b>Default:</b> 0
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70 | */
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71 | NxU32 flags;
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72 |
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73 | /**
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74 | \brief Constructor sets to default.
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75 | */
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76 | NX_INLINE NxDistanceJointDesc();
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77 | /**
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78 | \brief (re)sets the structure to the default.
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79 |
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80 | \param[in] fromCtor skip redundant operations if called from contructor.
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81 | */
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82 | NX_INLINE void setToDefault(bool fromCtor=false);
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83 | /**
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84 | \brief Returns true if the descriptor is valid.
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85 |
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86 | \return true if the current settings are valid
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87 | */
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88 | NX_INLINE bool isValid() const;
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89 |
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90 | };
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91 |
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92 | NX_INLINE NxDistanceJointDesc::NxDistanceJointDesc() : NxJointDesc(NX_JOINT_DISTANCE) //constructor sets to default
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93 | {
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94 | setToDefault(true);
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95 | }
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96 |
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97 | NX_INLINE void NxDistanceJointDesc::setToDefault(bool fromCtor)
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98 | {
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99 | NxJointDesc::setToDefault();
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100 | maxDistance = 0.0f;
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101 | minDistance = 0.0f;
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102 | //stiffness = 1.0f;
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103 | flags = 0;
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104 |
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105 | if (!fromCtor)
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106 | {
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107 | //this is redundant if we're being called from the ctor:
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108 | spring.setToDefault();
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109 | }
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110 | }
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111 |
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112 | NX_INLINE bool NxDistanceJointDesc::isValid() const
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113 | {
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114 | if (maxDistance < 0) return false;
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115 | if (minDistance < 0) return false;
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116 |
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117 | // if both distance constrains are on, the min better be less than or equal to the max.
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118 | if ((minDistance > maxDistance) && (flags == (NX_DJF_MIN_DISTANCE_ENABLED | NX_DJF_MAX_DISTANCE_ENABLED))) return false;
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119 | // if (stiffness < 0 || stiffness > 1) return false;
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120 | if (!spring.isValid()) return false;
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121 |
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122 | return NxJointDesc::isValid();
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123 | }
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124 |
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125 | /** @} */
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126 | #endif
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127 |
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128 |
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129 | //AGCOPYRIGHTBEGIN
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130 | ///////////////////////////////////////////////////////////////////////////
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131 | // Copyright © 2005 AGEIA Technologies.
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132 | // All rights reserved. www.ageia.com
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133 | ///////////////////////////////////////////////////////////////////////////
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134 | //AGCOPYRIGHTEND
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135 |
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