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Added lerp_angles built-in function

Browse Source 
Co-authored-by: Xrayez <https://github.com/Xrayez>
Co-authored-by: DleanJeans <https://github.com/DleanJeans>
This commit is contained in:
Chaosus 2019-07-14 07:30:45 +03:00
parent c317a3ce16
commit 6694c119d0
10 changed files with 84 additions and 10 deletions
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9
core/math/expression.cpp
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@ -68,6 +68,7 @@ const char *Expression::func_name[Expression::FUNC_MAX] = {
"step_decimals",
"stepify",
"lerp",
"lerp_angle",
"inverse_lerp",
"range_lerp",
"smoothstep",
@ -190,6 +191,7 @@ int Expression::get_func_argument_count(BuiltinFunc p_func) {
case COLORN:
return 2;
case MATH_LERP:
case MATH_LERP_ANGLE:
case MATH_INVERSE_LERP:
case MATH_SMOOTHSTEP:
case MATH_MOVE_TOWARD:
@ -395,6 +397,13 @@ void Expression::exec_func(BuiltinFunc p_func, const Variant **p_inputs, Variant
VALIDATE_ARG_NUM(2);
*r_return = Math::lerp((double)*p_inputs[0], (double)*p_inputs[1], (double)*p_inputs[2]);
} break;
case MATH_LERP_ANGLE: {
VALIDATE_ARG_NUM(0);
VALIDATE_ARG_NUM(1);
VALIDATE_ARG_NUM(2);
*r_return = Math::lerp_angle((double)*p_inputs[0], (double)*p_inputs[1], (double)*p_inputs[2]);
} break;
case MATH_INVERSE_LERP: {
VALIDATE_ARG_NUM(0);

1
core/math/expression.h
View File

@ -67,6 +67,7 @@ public:
MATH_STEP_DECIMALS,
MATH_STEPIFY,
MATH_LERP,
MATH_LERP_ANGLE,
MATH_INVERSE_LERP,
MATH_RANGE_LERP,
MATH_SMOOTHSTEP,

11
core/math/math_funcs.h
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@ -215,6 +215,17 @@ public:
static _ALWAYS_INLINE_ double lerp(double p_from, double p_to, double p_weight) { return p_from + (p_to - p_from) * p_weight; }
static _ALWAYS_INLINE_ float lerp(float p_from, float p_to, float p_weight) { return p_from + (p_to - p_from) * p_weight; }
static _ALWAYS_INLINE_ double lerp_angle(double p_from, double p_to, double p_weight) {
double difference = fmod(p_to - p_from, Math_TAU);
double distance = fmod(2.0 * difference, Math_TAU) - difference;
return p_from + distance * p_weight;
}
static _ALWAYS_INLINE_ float lerp_angle(float p_from, float p_to, float p_weight) {
float difference = fmod(p_to - p_from, (float)Math_TAU);
float distance = fmod(2.0f * difference, (float)Math_TAU) - difference;
return p_from + distance * p_weight;
}
static _ALWAYS_INLINE_ double inverse_lerp(double p_from, double p_to, double p_value) { return (p_value - p_from) / (p_to - p_from); }
static _ALWAYS_INLINE_ float inverse_lerp(float p_from, float p_to, float p_value) { return (p_value - p_from) / (p_to - p_from); }

23
modules/gdscript/doc_classes/@GDScript.xml
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@ -604,6 +604,29 @@
[/codeblock]
</description>
</method>
<method name="lerp_angle">
<return type="float">
</return>
<argument index="0" name="from" type="float">
</argument>
<argument index="1" name="to" type="float">
</argument>
<argument index="2" name="weight" type="float">
</argument>
<description>
Linearly interpolates between two angles (in radians) by a normalized value.
Similar to [method lerp] but interpolate correctly when the angles wrap around [constant @GDScript.TAU].
[codeblock]
extends Sprite
var elapsed = 0.0
func _process(delta):
var min_angle = deg2rad(0.0)
var max_angle = deg2rad(90.0)
rotation = lerp_angle(min_angle, max_angle, elapsed)
elapsed += delta
[/codeblock]
</description>
</method>
<method name="linear2db">
<return type="float">
</return>

13
modules/gdscript/gdscript_functions.cpp
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@ -76,6 +76,7 @@ const char *GDScriptFunctions::get_func_name(Function p_func) {
"step_decimals",
"stepify",
"lerp",
"lerp_angle",
"inverse_lerp",
"range_lerp",
"smoothstep",
@ -383,6 +384,13 @@ void GDScriptFunctions::call(Function p_func, const Variant **p_args, int p_arg_
} break;
}
} break;
case MATH_LERP_ANGLE: {
VALIDATE_ARG_COUNT(3);
VALIDATE_ARG_NUM(0);
VALIDATE_ARG_NUM(1);
VALIDATE_ARG_NUM(2);
r_ret = Math::lerp_angle((double)*p_args[0], (double)*p_args[1], (double)*p_args[2]);
} break;
case MATH_INVERSE_LERP: {
VALIDATE_ARG_COUNT(3);
VALIDATE_ARG_NUM(0);
@ -1676,6 +1684,11 @@ MethodInfo GDScriptFunctions::get_info(Function p_func) {
mi.return_val.usage |= PROPERTY_USAGE_NIL_IS_VARIANT;
return mi;
} break;
case MATH_LERP_ANGLE: {
MethodInfo mi("lerp_angle", PropertyInfo(Variant::REAL, "from"), PropertyInfo(Variant::REAL, "to"), PropertyInfo(Variant::REAL, "weight"));
mi.return_val.type = Variant::REAL;
return mi;
} break;
case MATH_INVERSE_LERP: {
MethodInfo mi("inverse_lerp", PropertyInfo(Variant::REAL, "from"), PropertyInfo(Variant::REAL, "to"), PropertyInfo(Variant::REAL, "weight"));
mi.return_val.type = Variant::REAL;

1
modules/gdscript/gdscript_functions.h
View File

@ -67,6 +67,7 @@ public:
MATH_STEP_DECIMALS,
MATH_STEPIFY,
MATH_LERP,
MATH_LERP_ANGLE,
MATH_INVERSE_LERP,
MATH_RANGE_LERP,
MATH_SMOOTHSTEP,

6
modules/mono/glue/Managed/Files/Mathf.cs
View File

@ -185,6 +185,12 @@ namespace Godot
return from + (to - from) * weight;
}
public static real_t LerpAngle(real_t from, real_t to, real_t weight) {
real_t difference = (to - from) % Mathf.Tau;
real_t distance = ((2 * difference) % Mathf.Tau) - difference;
return from + distance * weight;
}
public static real_t Log(real_t s)
{
return (real_t)Math.Log(s);

5
modules/visual_script/doc_classes/VisualScriptBuiltinFunc.xml
View File

@ -212,8 +212,11 @@
var t = clamp((weight - from) / (to - from), 0.0, 1.0)
return t * t * (3.0 - 2.0 * t)
[/codeblock]
<constant name="MATH_POSMOD" value="65" enum="BuiltinFunc">
</constant>
<constant name="FUNC_MAX" value="65" enum="BuiltinFunc">
<constant name="MATH_LERP_ANGLE" value="66" enum="BuiltinFunc">
</constant>
<constant name="FUNC_MAX" value="67" enum="BuiltinFunc">
Represents the size of the [enum BuiltinFunc] enum.
</constant>
</constants>

24
modules/visual_script/visual_script_builtin_funcs.cpp
View File

@ -105,6 +105,7 @@ const char *VisualScriptBuiltinFunc::func_name[VisualScriptBuiltinFunc::FUNC_MAX
"color_named",
"smoothstep",
"posmod",
"lerp_angle",
};
VisualScriptBuiltinFunc::BuiltinFunc VisualScriptBuiltinFunc::find_function(const String &p_string) {
@ -207,6 +208,7 @@ int VisualScriptBuiltinFunc::get_func_argument_count(BuiltinFunc p_func) {
case COLORN:
return 2;
case MATH_LERP:
case MATH_LERP_ANGLE:
case MATH_INVERSE_LERP:
case MATH_SMOOTHSTEP:
case MATH_MOVE_TOWARD:
@ -318,7 +320,9 @@ PropertyInfo VisualScriptBuiltinFunc::get_input_value_port_info(int p_idx) const
return PropertyInfo(Variant::REAL, "steps");
} break;
case MATH_LERP:
case MATH_INVERSE_LERP: {
case MATH_LERP_ANGLE:
case MATH_INVERSE_LERP:
case MATH_SMOOTHSTEP: {
if (p_idx == 0)
return PropertyInfo(Variant::REAL, "from");
else if (p_idx == 1)
@ -338,14 +342,6 @@ PropertyInfo VisualScriptBuiltinFunc::get_input_value_port_info(int p_idx) const
else
return PropertyInfo(Variant::REAL, "ostop");
} break;
case MATH_SMOOTHSTEP: {
if (p_idx == 0)
return PropertyInfo(Variant::REAL, "from");
else if (p_idx == 1)
return PropertyInfo(Variant::REAL, "to");
else
return PropertyInfo(Variant::REAL, "weight");
} break;
case MATH_MOVE_TOWARD: {
if (p_idx == 0)
return PropertyInfo(Variant::REAL, "from");
@ -532,6 +528,7 @@ PropertyInfo VisualScriptBuiltinFunc::get_output_value_port_info(int p_idx) cons
} break;
case MATH_STEPIFY:
case MATH_LERP:
case MATH_LERP_ANGLE:
case MATH_INVERSE_LERP:
case MATH_RANGE_LERP:
case MATH_SMOOTHSTEP:
@ -856,6 +853,13 @@ void VisualScriptBuiltinFunc::exec_func(BuiltinFunc p_func, const Variant **p_in
VALIDATE_ARG_NUM(2);
*r_return = Math::lerp((double)*p_inputs[0], (double)*p_inputs[1], (double)*p_inputs[2]);
} break;
case VisualScriptBuiltinFunc::MATH_LERP_ANGLE: {
VALIDATE_ARG_NUM(0);
VALIDATE_ARG_NUM(1);
VALIDATE_ARG_NUM(2);
*r_return = Math::lerp_angle((double)*p_inputs[0], (double)*p_inputs[1], (double)*p_inputs[2]);
} break;
case VisualScriptBuiltinFunc::MATH_INVERSE_LERP: {
VALIDATE_ARG_NUM(0);
@ -1369,6 +1373,7 @@ void VisualScriptBuiltinFunc::_bind_methods() {
BIND_ENUM_CONSTANT(BYTES_TO_VAR);
BIND_ENUM_CONSTANT(COLORN);
BIND_ENUM_CONSTANT(MATH_SMOOTHSTEP);
BIND_ENUM_CONSTANT(MATH_LERP_ANGLE);
BIND_ENUM_CONSTANT(FUNC_MAX);
}
@ -1422,6 +1427,7 @@ void register_visual_script_builtin_func_node() {
VisualScriptLanguage::singleton->add_register_func("functions/built_in/decimals", create_builtin_func_node<VisualScriptBuiltinFunc::MATH_DECIMALS>);
VisualScriptLanguage::singleton->add_register_func("functions/built_in/stepify", create_builtin_func_node<VisualScriptBuiltinFunc::MATH_STEPIFY>);
VisualScriptLanguage::singleton->add_register_func("functions/built_in/lerp", create_builtin_func_node<VisualScriptBuiltinFunc::MATH_LERP>);
VisualScriptLanguage::singleton->add_register_func("functions/built_in/lerp_angle", create_builtin_func_node<VisualScriptBuiltinFunc::MATH_LERP_ANGLE>);
VisualScriptLanguage::singleton->add_register_func("functions/built_in/inverse_lerp", create_builtin_func_node<VisualScriptBuiltinFunc::MATH_INVERSE_LERP>);
VisualScriptLanguage::singleton->add_register_func("functions/built_in/range_lerp", create_builtin_func_node<VisualScriptBuiltinFunc::MATH_RANGE_LERP>);
VisualScriptLanguage::singleton->add_register_func("functions/built_in/smoothstep", create_builtin_func_node<VisualScriptBuiltinFunc::MATH_SMOOTHSTEP>);

1
modules/visual_script/visual_script_builtin_funcs.h
View File

@ -105,6 +105,7 @@ public:
COLORN,
MATH_SMOOTHSTEP,
MATH_POSMOD,
MATH_LERP_ANGLE,
FUNC_MAX
};