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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
//==============================================================
//
// sliderreader.cpp - BGFX shader parameter slider JSON reader
//
//==============================================================
#include "emu.h"
#include "sliderreader.h"
#include "slider.h"
const slider_reader::string_to_enum slider_reader::TYPE_NAMES[slider_reader::TYPE_COUNT] = {
{ "bool", uint64_t(bgfx_slider::slider_type::SLIDER_BOOL) },
{ "float", uint64_t(bgfx_slider::slider_type::SLIDER_FLOAT) },
{ "int", uint64_t(bgfx_slider::slider_type::SLIDER_INT) },
{ "color", uint64_t(bgfx_slider::slider_type::SLIDER_COLOR) },
{ "vec2", uint64_t(bgfx_slider::slider_type::SLIDER_VEC2) }
};
bgfx_slider* slider_reader::read_from_value(const Value& value)
{
validate_parameters(value);
bgfx_slider::slider_type type = bgfx_slider::slider_type(get_enum_from_value(value, "type", uint64_t(bgfx_slider::slider_type::SLIDER_FLOAT), TYPE_NAMES, TYPE_COUNT));
std::string name = value["name"].GetString();
std::string description = value["text"].GetString();
float defaults[4];
float min[4];
float max[4];
get_values(value, "default", defaults);
get_values(value, "min", min);
get_values(value, "max", max);
return new bgfx_slider(type, name, description, defaults, min, max);
}
void slider_reader::get_values(const Value& value, std::string name, float* values)
{
const char* name_str = name.c_str();
if (value.HasMember(name_str))
{
if (value[name_str].IsBool())
{
values[0] = value[name_str].GetBool() ? 1.0f : 0.0f;
}
else if (value[name_str].IsDouble())
{
values[0] = float(value[name_str].GetDouble());
}
else
{
const Value& value_array = value[name_str];
for (UINT32 i = 0; i < value_array.Size() && i < 4; i++)
{
values[i] = float(value_array[i].GetDouble());
}
}
}
}
void slider_reader::validate_parameters(const Value& value)
{
assert(value.HasMember("type"));
assert(value["type"].IsString());
assert(value.HasMember("name"));
assert(value["name"].IsString());
assert(value.HasMember("text"));
assert(value["text"].IsString());
assert(value.HasMember("default"));
}
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