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finish parse scene

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Shuo Feng 2024-02-13 22:17:49 -05:00
parent fd2b57b4ae
commit e7b7d94cf6
Signed by: sfeng
GPG key ID: 1E83AE6CD1C037B1
1 changed files with 41 additions and 2 deletions
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43
src/Parser.cc
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@ -1,6 +1,45 @@
#include "Parser.h"
#include <Eigen/Core>
#include <string>
static Scene *parseScene(const nlohmann::json &j) {
string name = j["filename"].get<string>();
using Eigen::Vector3f;
using Eigen::VectorXi;
using std::string;
// a helper function to get Vector3f
const Vector3f getVector3f(const nlohmann::json &j) {
return Vector3f(j[0].get<float>(), j[1].get<float>(), j[2].get<float>());
}
// A helper function to get raysperpixel array
const VectorXi getRpp(const nlohmann::json &j) {
VectorXi rpp(j.size());
for (int i = 0; i < j.size(); ++i) {
rpp[i] = j[i].get<int>();
}
return rpp;
}
Scene *Parser::getScene(const nlohmann::json &j) {
string name = j["filename"].get<string>();
int width = j["size"][0].get<int>();
int height = j["size"][1].get<int>();
float fov = j["fov"].get<float>();
Vector3f lookAt = getVector3f(j["lookat"]);
Vector3f up = getVector3f(j["up"]);
Vector3f center = getVector3f(j["center"]);
Vector3f ai = getVector3f(j["ai"]);
Vector3f bgc = getVector3f(j["bkc"]);
Scene *sc = new Scene(name, width, height, fov, center, up, lookAt, ai, bgc);
sc->setAntialiasing(j.value("antialiasing", false));
sc->setTwoSideRender(j.value("twosiderender", false));
sc->setGlobalIllum(j.value("globalillum", false));
if (j.contains("raysperpixel"))
sc->setRaysPerPixel(getRpp(j["raysperpixel"]));
return sc;
}