class_curve.rst 20 KB

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  1. .. Generated automatically by doc/tools/makerst.py in Godot's source tree.
  2. .. DO NOT EDIT THIS FILE, but the Curve.xml source instead.
  3. .. The source is found in doc/classes or modules/<name>/doc_classes.
  4. .. _class_Curve:
  5. Curve
  6. =====
  7. **Inherits:** :ref:`Resource<class_Resource>` **<** :ref:`Reference<class_Reference>` **<** :ref:`Object<class_Object>`
  8. **Category:** Core
  9. Brief Description
  10. -----------------
  11. A mathematic curve.
  12. Properties
  13. ----------
  14. +---------------------------+--------------------------------------------------------------+
  15. | :ref:`int<class_int>` | :ref:`bake_resolution<class_Curve_property_bake_resolution>` |
  16. +---------------------------+--------------------------------------------------------------+
  17. | :ref:`float<class_float>` | :ref:`max_value<class_Curve_property_max_value>` |
  18. +---------------------------+--------------------------------------------------------------+
  19. | :ref:`float<class_float>` | :ref:`min_value<class_Curve_property_min_value>` |
  20. +---------------------------+--------------------------------------------------------------+
  21. Methods
  22. -------
  23. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  24. | :ref:`int<class_int>` | :ref:`add_point<class_Curve_method_add_point>` **(** :ref:`Vector2<class_Vector2>` position, :ref:`float<class_float>` left_tangent=0, :ref:`float<class_float>` right_tangent=0, :ref:`TangentMode<enum_Curve_TangentMode>` left_mode=0, :ref:`TangentMode<enum_Curve_TangentMode>` right_mode=0 **)** |
  25. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  26. | void | :ref:`bake<class_Curve_method_bake>` **(** **)** |
  27. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  28. | void | :ref:`clean_dupes<class_Curve_method_clean_dupes>` **(** **)** |
  29. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  30. | void | :ref:`clear_points<class_Curve_method_clear_points>` **(** **)** |
  31. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  32. | :ref:`int<class_int>` | :ref:`get_point_count<class_Curve_method_get_point_count>` **(** **)** const |
  33. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  34. | :ref:`TangentMode<enum_Curve_TangentMode>` | :ref:`get_point_left_mode<class_Curve_method_get_point_left_mode>` **(** :ref:`int<class_int>` index **)** const |
  35. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  36. | :ref:`float<class_float>` | :ref:`get_point_left_tangent<class_Curve_method_get_point_left_tangent>` **(** :ref:`int<class_int>` index **)** const |
  37. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  38. | :ref:`Vector2<class_Vector2>` | :ref:`get_point_position<class_Curve_method_get_point_position>` **(** :ref:`int<class_int>` index **)** const |
  39. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  40. | :ref:`TangentMode<enum_Curve_TangentMode>` | :ref:`get_point_right_mode<class_Curve_method_get_point_right_mode>` **(** :ref:`int<class_int>` index **)** const |
  41. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  42. | :ref:`float<class_float>` | :ref:`get_point_right_tangent<class_Curve_method_get_point_right_tangent>` **(** :ref:`int<class_int>` index **)** const |
  43. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  44. | :ref:`float<class_float>` | :ref:`interpolate<class_Curve_method_interpolate>` **(** :ref:`float<class_float>` offset **)** const |
  45. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  46. | :ref:`float<class_float>` | :ref:`interpolate_baked<class_Curve_method_interpolate_baked>` **(** :ref:`float<class_float>` offset **)** |
  47. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  48. | void | :ref:`remove_point<class_Curve_method_remove_point>` **(** :ref:`int<class_int>` index **)** |
  49. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  50. | void | :ref:`set_point_left_mode<class_Curve_method_set_point_left_mode>` **(** :ref:`int<class_int>` index, :ref:`TangentMode<enum_Curve_TangentMode>` mode **)** |
  51. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  52. | void | :ref:`set_point_left_tangent<class_Curve_method_set_point_left_tangent>` **(** :ref:`int<class_int>` index, :ref:`float<class_float>` tangent **)** |
  53. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  54. | :ref:`int<class_int>` | :ref:`set_point_offset<class_Curve_method_set_point_offset>` **(** :ref:`int<class_int>` index, :ref:`float<class_float>` offset **)** |
  55. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  56. | void | :ref:`set_point_right_mode<class_Curve_method_set_point_right_mode>` **(** :ref:`int<class_int>` index, :ref:`TangentMode<enum_Curve_TangentMode>` mode **)** |
  57. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  58. | void | :ref:`set_point_right_tangent<class_Curve_method_set_point_right_tangent>` **(** :ref:`int<class_int>` index, :ref:`float<class_float>` tangent **)** |
  59. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  60. | void | :ref:`set_point_value<class_Curve_method_set_point_value>` **(** :ref:`int<class_int>` index, :ref:`float<class_float>` y **)** |
  61. +--------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
  62. Signals
  63. -------
  64. .. _class_Curve_signal_range_changed:
  65. - **range_changed** **(** **)**
  66. Emitted when :ref:`max_value<class_Curve_property_max_value>` or :ref:`min_value<class_Curve_property_min_value>` is changed.
  67. Enumerations
  68. ------------
  69. .. _enum_Curve_TangentMode:
  70. .. _class_Curve_constant_TANGENT_FREE:
  71. .. _class_Curve_constant_TANGENT_LINEAR:
  72. .. _class_Curve_constant_TANGENT_MODE_COUNT:
  73. enum **TangentMode**:
  74. - **TANGENT_FREE** = **0** --- The tangent on this side of the point is user-defined.
  75. - **TANGENT_LINEAR** = **1** --- The curve calculates the tangent on this side of the point as the slope halfway towards the adjacent point.
  76. - **TANGENT_MODE_COUNT** = **2** --- The total number of available tangent modes.
  77. Description
  78. -----------
  79. A curve that can be saved and re-used for other objects. By default it ranges between ``0`` and ``1`` on the y-axis and positions points relative to the ``0.5`` y-position.
  80. Property Descriptions
  81. ---------------------
  82. .. _class_Curve_property_bake_resolution:
  83. - :ref:`int<class_int>` **bake_resolution**
  84. +----------+----------------------------+
  85. | *Setter* | set_bake_resolution(value) |
  86. +----------+----------------------------+
  87. | *Getter* | get_bake_resolution() |
  88. +----------+----------------------------+
  89. The number of points to include in the baked (i.e. cached) curve data.
  90. .. _class_Curve_property_max_value:
  91. - :ref:`float<class_float>` **max_value**
  92. +----------+----------------------+
  93. | *Setter* | set_max_value(value) |
  94. +----------+----------------------+
  95. | *Getter* | get_max_value() |
  96. +----------+----------------------+
  97. The maximum value the curve can reach. Default value: ``1``.
  98. .. _class_Curve_property_min_value:
  99. - :ref:`float<class_float>` **min_value**
  100. +----------+----------------------+
  101. | *Setter* | set_min_value(value) |
  102. +----------+----------------------+
  103. | *Getter* | get_min_value() |
  104. +----------+----------------------+
  105. The minimum value the curve can reach. Default value: ``0``.
  106. Method Descriptions
  107. -------------------
  108. .. _class_Curve_method_add_point:
  109. - :ref:`int<class_int>` **add_point** **(** :ref:`Vector2<class_Vector2>` position, :ref:`float<class_float>` left_tangent=0, :ref:`float<class_float>` right_tangent=0, :ref:`TangentMode<enum_Curve_TangentMode>` left_mode=0, :ref:`TangentMode<enum_Curve_TangentMode>` right_mode=0 **)**
  110. Adds a point to the curve. For each side, if the ``*_mode`` is ``TANGENT_LINEAR``, the ``*_tangent`` angle (in degrees) uses the slope of the curve halfway to the adjacent point. Allows custom assignments to the ``*_tangent`` angle if ``*_mode`` is set to ``TANGENT_FREE``.
  111. .. _class_Curve_method_bake:
  112. - void **bake** **(** **)**
  113. Recomputes the baked cache of points for the curve.
  114. .. _class_Curve_method_clean_dupes:
  115. - void **clean_dupes** **(** **)**
  116. Removes points that are closer than ``CMP_EPSILON`` (0.00001) units to their neighbor on the curve.
  117. .. _class_Curve_method_clear_points:
  118. - void **clear_points** **(** **)**
  119. Removes all points from the curve.
  120. .. _class_Curve_method_get_point_count:
  121. - :ref:`int<class_int>` **get_point_count** **(** **)** const
  122. Returns the number of points describing the curve.
  123. .. _class_Curve_method_get_point_left_mode:
  124. - :ref:`TangentMode<enum_Curve_TangentMode>` **get_point_left_mode** **(** :ref:`int<class_int>` index **)** const
  125. Returns the left ``TangentMode`` for the point at ``index``.
  126. .. _class_Curve_method_get_point_left_tangent:
  127. - :ref:`float<class_float>` **get_point_left_tangent** **(** :ref:`int<class_int>` index **)** const
  128. Returns the left tangent angle (in degrees) for the point at ``index``.
  129. .. _class_Curve_method_get_point_position:
  130. - :ref:`Vector2<class_Vector2>` **get_point_position** **(** :ref:`int<class_int>` index **)** const
  131. Returns the curve coordinates for the point at ``index``.
  132. .. _class_Curve_method_get_point_right_mode:
  133. - :ref:`TangentMode<enum_Curve_TangentMode>` **get_point_right_mode** **(** :ref:`int<class_int>` index **)** const
  134. Returns the right ``TangentMode`` for the point at ``index``.
  135. .. _class_Curve_method_get_point_right_tangent:
  136. - :ref:`float<class_float>` **get_point_right_tangent** **(** :ref:`int<class_int>` index **)** const
  137. Returns the right tangent angle (in degrees) for the point at ``index``.
  138. .. _class_Curve_method_interpolate:
  139. - :ref:`float<class_float>` **interpolate** **(** :ref:`float<class_float>` offset **)** const
  140. Returns the y value for the point that would exist at x-position ``offset`` along the curve.
  141. .. _class_Curve_method_interpolate_baked:
  142. - :ref:`float<class_float>` **interpolate_baked** **(** :ref:`float<class_float>` offset **)**
  143. Returns the y value for the point that would exist at x-position ``offset`` along the curve using the baked cache. Bakes the curve's points if not already baked.
  144. .. _class_Curve_method_remove_point:
  145. - void **remove_point** **(** :ref:`int<class_int>` index **)**
  146. Removes the point at ``index`` from the curve.
  147. .. _class_Curve_method_set_point_left_mode:
  148. - void **set_point_left_mode** **(** :ref:`int<class_int>` index, :ref:`TangentMode<enum_Curve_TangentMode>` mode **)**
  149. Sets the left ``TangentMode`` for the point at ``index`` to ``mode``.
  150. .. _class_Curve_method_set_point_left_tangent:
  151. - void **set_point_left_tangent** **(** :ref:`int<class_int>` index, :ref:`float<class_float>` tangent **)**
  152. Sets the left tangent angle for the point at ``index`` to ``tangent``.
  153. .. _class_Curve_method_set_point_offset:
  154. - :ref:`int<class_int>` **set_point_offset** **(** :ref:`int<class_int>` index, :ref:`float<class_float>` offset **)**
  155. Sets the offset from ``0.5``
  156. .. _class_Curve_method_set_point_right_mode:
  157. - void **set_point_right_mode** **(** :ref:`int<class_int>` index, :ref:`TangentMode<enum_Curve_TangentMode>` mode **)**
  158. Sets the right ``TangentMode`` for the point at ``index`` to ``mode``.
  159. .. _class_Curve_method_set_point_right_tangent:
  160. - void **set_point_right_tangent** **(** :ref:`int<class_int>` index, :ref:`float<class_float>` tangent **)**
  161. Sets the right tangent angle for the point at ``index`` to ``tangent``.
  162. .. _class_Curve_method_set_point_value:
  163. - void **set_point_value** **(** :ref:`int<class_int>` index, :ref:`float<class_float>` y **)**
  164. Assigns the vertical position ``y`` to the point at ``index``.