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Add Color.from_hsv()

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This commit is contained in:
Bernhard Liebl 2018-01-18 22:03:34 +01:00
parent d0d511b0f8
commit be55171231
4 changed files with 88 additions and 7 deletions
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49
core/color.cpp
View file

@ -400,6 +400,55 @@ String Color::to_html(bool p_alpha) const {
return txt;
}
Color Color::from_hsv(float p_h, float p_s, float p_v, float p_a) {
const float h_ = p_h / 60.0f;
const float c = p_v * p_s;
const float x = c * (1.0f - Math::abs(Math::fmod(h_, 2.0f) - 1.0f));
float r, g, b;
switch ((int)h_) {
case 0: {
r = c;
g = x;
b = 0;
} break;
case 1: {
r = x;
g = c;
b = 0;
} break;
case 2: {
r = 0;
g = c;
b = x;
} break;
case 3: {
r = 0;
g = x;
b = c;
} break;
case 4: {
r = x;
g = 0;
b = c;
} break;
case 5: {
r = c;
g = 0;
b = x;
} break;
default: {
r = 0;
g = 0;
b = 0;
} break;
}
const float m = p_v - c;
return Color(m + r, m + g, m + b, p_a);
}
float Color::gray() const {
return (r + g + b) / 3.0;

1
core/color.h
View file

@ -190,6 +190,7 @@ struct Color {
static bool html_is_valid(const String &p_color);
static Color named(const String &p_name);
String to_html(bool p_alpha = true) const;
Color from_hsv(float p_h, float p_s, float p_v, float p_a);
_FORCE_INLINE_ bool operator<(const Color &p_color) const; //used in set keys
operator String() const;

2
core/variant_call.cpp
View file

@ -443,6 +443,7 @@ struct _VariantCall {
VCALL_LOCALMEM1R(Color, lightened);
VCALL_LOCALMEM1R(Color, darkened);
VCALL_LOCALMEM1R(Color, to_html);
VCALL_LOCALMEM4R(Color, from_hsv);
VCALL_LOCALMEM0R(RID, get_id);
@ -1589,6 +1590,7 @@ void register_variant_methods() {
ADDFUNC1R(COLOR, COLOR, Color, lightened, REAL, "amount", varray());
ADDFUNC1R(COLOR, COLOR, Color, darkened, REAL, "amount", varray());
ADDFUNC1R(COLOR, STRING, Color, to_html, BOOL, "with_alpha", varray(true));
ADDFUNC4R(COLOR, COLOR, Color, from_hsv, REAL, "h", REAL, "s", REAL, "v", REAL, "a", varray(1.0));
ADDFUNC0R(_RID, INT, RID, get_id, varray());

43
modules/gdscript/gdscript_parser.cpp
View file

@ -578,18 +578,47 @@ GDScriptParser::Node *GDScriptParser::_parse_expression(Node *p_parent, bool p_s
if (identifier == StringName()) {
_set_error("Built-in type constant expected after '.'");
_set_error("Built-in type constant or static function expected after '.'");
return NULL;
}
if (!Variant::has_numeric_constant(bi_type, identifier)) {
_set_error("Static constant '" + identifier.operator String() + "' not present in built-in type " + Variant::get_type_name(bi_type) + ".");
return NULL;
}
if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_OPEN &&
Variant::is_method_const(bi_type, identifier) &&
Variant::get_method_return_type(bi_type, identifier) == bi_type) {
ConstantNode *cn = alloc_node<ConstantNode>();
cn->value = Variant::get_numeric_constant_value(bi_type, identifier);
expr = cn;
tokenizer->advance();
OperatorNode *construct = alloc_node<OperatorNode>();
construct->op = OperatorNode::OP_CALL;
TypeNode *tn = alloc_node<TypeNode>();
tn->vtype = bi_type;
construct->arguments.push_back(tn);
OperatorNode *op = alloc_node<OperatorNode>();
op->op = OperatorNode::OP_CALL;
op->arguments.push_back(construct);
IdentifierNode *id = alloc_node<IdentifierNode>();
id->name = identifier;
op->arguments.push_back(id);
if (!_parse_arguments(op, op->arguments, p_static, true))
return NULL;
expr = op;
} else {
_set_error("Static constant '" + identifier.operator String() + "' not present in built-in type " + Variant::get_type_name(bi_type) + ".");
return NULL;
}
} else {
ConstantNode *cn = alloc_node<ConstantNode>();
cn->value = Variant::get_numeric_constant_value(bi_type, identifier);
expr = cn;
}
} else if (tokenizer->get_token(1) == GDScriptTokenizer::TK_PARENTHESIS_OPEN && tokenizer->is_token_literal()) {
// We check with is_token_literal, as this allows us to use match/sync/etc. as a name