Added a bunch of scalar constants to visual shaders

editor/plugins/visual_shader_editor_plugin.cpp

@@ -31,6 +31,7 @@
 #include "visual_shader_editor_plugin.h"
 
 #include "core/io/resource_loader.h"
+#include "core/math/math_defs.h"
 #include "core/os/input.h"
 #include "core/os/keyboard.h"
 #include "core/project_settings.h"
@@ -1138,6 +1139,13 @@ void VisualShaderEditor::_add_node(int p_idx, int p_op_idx) {
 		VisualShaderNode *vsn = Object::cast_to<VisualShaderNode>(ClassDB::instance(add_options[p_idx].type));
 		ERR_FAIL_COND(!vsn);
 
+		VisualShaderNodeScalarConstant *constant = Object::cast_to<VisualShaderNodeScalarConstant>(vsn);
+
+		if (constant) {
+			if ((int)add_options[p_idx].value != -1)
+				constant->set_constant(add_options[p_idx].value);
+		}
+
 		if (p_op_idx != -1) {
 
 			VisualShaderNodeInput *input = Object::cast_to<VisualShaderNodeInput>(vsn);
@@ -1987,6 +1995,7 @@ VisualShaderEditor::VisualShaderEditor() {
 	add_options.push_back(AddOption("ColorUniform", "Color", "Variables", "VisualShaderNodeColorUniform", TTR("Color uniform."), -1, VisualShaderNode::PORT_TYPE_COLOR));
 
 	// BOOLEAN
+
 	add_options.push_back(AddOption("If", "Conditional", "Functions", "VisualShaderNodeIf", TTR("Returns an associated vector if the provided scalars are equal, greater or less."), -1, VisualShaderNode::PORT_TYPE_VECTOR));
 	add_options.push_back(AddOption("Switch", "Conditional", "Functions", "VisualShaderNodeSwitch", TTR("Returns an associated vector if the provided boolean value is true or false."), -1, VisualShaderNode::PORT_TYPE_VECTOR));
 	add_options.push_back(AddOption("BooleanConstant", "Conditional", "Variables", "VisualShaderNodeBooleanConstant", TTR("Boolean constant."), -1, VisualShaderNode::PORT_TYPE_BOOLEAN));
@@ -2100,6 +2109,19 @@ VisualShaderEditor::VisualShaderEditor() {
 	add_options.push_back(AddOption("ScalarFunc", "Scalar", "Common", "VisualShaderNodeScalarFunc", TTR("Scalar function."), -1, VisualShaderNode::PORT_TYPE_SCALAR));
 	add_options.push_back(AddOption("ScalarOp", "Scalar", "Common", "VisualShaderNodeScalarOp", TTR("Scalar operator."), -1, VisualShaderNode::PORT_TYPE_SCALAR));
 
+	//CONSTANTS
+
+	add_options.push_back(AddOption("E", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("E constant (2.718282). Represents the base of the natural logarithm."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, Math_E));
+	add_options.push_back(AddOption("Epsilon", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("Epsilon constant (0.00001). Smallest possible scalar number."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, CMP_EPSILON));
+	add_options.push_back(AddOption("Phi", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("Phi constant (1.618034). Golden ratio."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, 1.618034f));
+	add_options.push_back(AddOption("Pi/4", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("Pi/4 constant (0.785398) or 45 degrees."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, Math_PI / 4));
+	add_options.push_back(AddOption("Pi/2", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("Pi/2 constant (1.570796) or 90 degrees."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, Math_PI / 2));
+	add_options.push_back(AddOption("Pi", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("Pi constant (3.141593) or 180 degrees."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, Math_PI));
+	add_options.push_back(AddOption("Tau", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("Tau constant (6.283185) or 360 degrees."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, Math_TAU));
+	add_options.push_back(AddOption("Sqrt2", "Scalar", "Constants", "VisualShaderNodeScalarConstant", TTR("Sqrt2 constant (1.414214). Square root of 2."), -1, VisualShaderNode::PORT_TYPE_SCALAR, -1, -1, Math_SQRT2));
+
+	// FUNCTIONS
+
 	add_options.push_back(AddOption("Abs", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Returns the absolute value of the parameter."), VisualShaderNodeScalarFunc::FUNC_ABS, VisualShaderNode::PORT_TYPE_SCALAR));
 	add_options.push_back(AddOption("ACos", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("Returns the arc-cosine of the parameter."), VisualShaderNodeScalarFunc::FUNC_ACOS, VisualShaderNode::PORT_TYPE_SCALAR));
 	add_options.push_back(AddOption("ACosH", "Scalar", "Functions", "VisualShaderNodeScalarFunc", TTR("(GLES3 only) Returns the inverse hyperbolic cosine of the parameter."), VisualShaderNodeScalarFunc::FUNC_ACOSH, VisualShaderNode::PORT_TYPE_SCALAR));

editor/plugins/visual_shader_editor_plugin.h

@@ -101,8 +101,9 @@ class VisualShaderEditor : public VBoxContainer {
 		int mode;
 		int return_type;
 		int func;
+		float value;
 
-		AddOption(const String &p_name = String(), const String &p_category = String(), const String &p_sub_category = String(), const String &p_type = String(), const String &p_description = String(), int p_sub_func = -1, int p_return_type = -1, int p_mode = -1, int p_func = -1) {
+		AddOption(const String &p_name = String(), const String &p_category = String(), const String &p_sub_category = String(), const String &p_type = String(), const String &p_description = String(), int p_sub_func = -1, int p_return_type = -1, int p_mode = -1, int p_func = -1, float p_value = -1) {
 			name = p_name;
 			type = p_type;
 			category = p_category;
@@ -112,9 +113,10 @@ class VisualShaderEditor : public VBoxContainer {
 			return_type = p_return_type;
 			mode = p_mode;
 			func = p_func;
+			value = p_value;
 		}
 
-		AddOption(const String &p_name, const String &p_category, const String &p_sub_category, const String &p_type, const String &p_description, const String &p_sub_func, int p_return_type = -1, int p_mode = -1, int p_func = -1) {
+		AddOption(const String &p_name, const String &p_category, const String &p_sub_category, const String &p_type, const String &p_description, const String &p_sub_func, int p_return_type = -1, int p_mode = -1, int p_func = -1, float p_value = -1) {
 			name = p_name;
 			type = p_type;
 			category = p_category;
@@ -124,6 +126,7 @@ class VisualShaderEditor : public VBoxContainer {
 			return_type = p_return_type;
 			mode = p_mode;
 			func = p_func;
+			value = p_value;
 		}
 	};