Add load model check. Don't render if model and/or texture is not

loaded.

3 files changed, 94 insertions, 80 deletions

diff --git a/src/ObjModel.cpp b/src/ObjModel.cpp
index aa81cec..8933da8 100644
--- a/src/ObjModel.cpp
+++ b/src/ObjModel.cpp
@@ -10,53 +10,59 @@ ObjModel::ObjModel(std::string fileName)
 

 	int hlp = 0;

 	std::ifstream f(fileName);

-	std::string s0;

-	while (getline(f, s0)) {

-		std::stringstream ss0(s0);

-		std::string s1 = "";

-		ss0 >> s1;

-		if (s1.compare(0, s1.length(), "v") == 0) {

-			ss0 >> s1;

-			float x = std::stof(s1);

-			ss0 >> s1;

-			float y = std::stof(s1);

-			ss0 >> s1;

-			float z = std::stof(s1);

-			Vertice t(x, y, z, 1.0f, 0.0f, 0.0f);

-			vertices.push_back(t);

-		}

-		else if (s1.compare(0, s1.length(), "vn") == 0) {

-			ss0 >> s1;

-			float x = std::stof(s1);

-			ss0 >> s1;

-			float y = std::stof(s1);

-			ss0 >> s1;

-			float z = std::stof(s1);

-			Vector4f v(x, y, z, 0.0f);

-			normals.push_back(v);

-		}

-		else if (s1.compare(0, s1.length(), "vt") == 0) {

-			ss0 >> s1;

-			float u = std::stof(s1);

-			ss0 >> s1;

-			float v = std::stof(s1);

-			Texture_Coordinates kt;

-			kt.u = u;	kt.v = v;

-			uvcoo.push_back(kt);

-		}

-		else if (s1.compare(0, s1.length(), "f") == 0) {

-			Triangle pt;

-			for (int i = 0; i < 3; i++) {

-				ss0 >> s1;

-				std::stringstream ss1(s1);

-				std::string s2;

-				for (int j = 0; std::getline(ss1, s2, '/'); j++) {

-					pt.p[i][j] = std::stoi(s2);

-				}

-			}

-			faces.push_back(pt);

-		}

-	}

+  if (f.is_open()) {

+    std::string s0;

+    while (getline(f, s0)) {

+      std::stringstream ss0(s0);

+      std::string s1 = "";

+      ss0 >> s1;

+      if (s1.compare(0, s1.length(), "v") == 0) {

+        ss0 >> s1;

+        float x = std::stof(s1);

+        ss0 >> s1;

+        float y = std::stof(s1);

+        ss0 >> s1;

+        float z = std::stof(s1);

+        Vertice t(x, y, z, 1.0f, 0.0f, 0.0f);

+        vertices.push_back(t);

+      }

+      else if (s1.compare(0, s1.length(), "vn") == 0) {

+        ss0 >> s1;

+        float x = std::stof(s1);

+        ss0 >> s1;

+        float y = std::stof(s1);

+        ss0 >> s1;

+        float z = std::stof(s1);

+        Vector4f v(x, y, z, 0.0f);

+        normals.push_back(v);

+      }

+      else if (s1.compare(0, s1.length(), "vt") == 0) {

+        ss0 >> s1;

+        float u = std::stof(s1);

+        ss0 >> s1;

+        float v = std::stof(s1);

+        Texture_Coordinates kt;

+        kt.u = u;	kt.v = v;

+        uvcoo.push_back(kt);

+      }

+      else if (s1.compare(0, s1.length(), "f") == 0) {

+        Triangle pt;

+        for (int i = 0; i < 3; i++) {

+          ss0 >> s1;

+          std::stringstream ss1(s1);

+          std::string s2;

+          for (int j = 0; std::getline(ss1, s2, '/'); j++) {

+            pt.p[i][j] = std::stoi(s2);

+          }

+        }

+        faces.push_back(pt);

+      }

+    }

+    isLoaded = true;

+  }

+  else {

+    isLoaded = false;

+  }

 

 	std::chrono::high_resolution_clock::time_point time2 = std::chrono::high_resolution_clock::now();

 	loadingTime = std::chrono::duration_cast<std::chrono::duration<double>>(time2 - time1);

diff --git a/src/ObjModel.h b/src/ObjModel.h
index 5ceed26..63d49ef 100644
--- a/src/ObjModel.h
+++ b/src/ObjModel.h
@@ -22,6 +22,7 @@ public:
 	std::vector<Texture_Coordinates> uvcoo;

 	std::vector<Vector4f> normals;

 	std::vector<Triangle> faces;

+  bool isLoaded;

   std::chrono::duration<double> loadingTime;

 	ObjModel();

 	ObjModel(std::string fileName);

diff --git a/src/main.cpp b/src/main.cpp
index 11e199d..ca4ff1b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -57,39 +57,46 @@ int main()
     std::cerr << "Couldn't load and/or find texture!\n";

   }

 

-	std::cout << "Model loading time: " << model.loadingTime.count() << "s\n";

-	std::cout << "Vertices count: " << model.vertices.size() << "\nNumber of normals: " << model.normals.size() << "\nUV count: " << model.uvcoo.size() << "\n";

-	std::cout << "Number of faces: " << model.faces.size() << "\n";

-

-	while (window.isOpen())

-	{

-		while (window.pollEvent(event))

-			if (event.type == sf::Event::Closed)

-				window.close();

-

-		time = clock.getElapsedTime();

-

-		Vertice a1, b1, c1, d1, e1, f1;

-

-		Matrix4f move = Matrix4f::move(0.0f, -150.0f, 600.0f);

-		Matrix4f rotate = Matrix4f::rotate(0.0f, time.asSeconds() * 25.0f, 0.0f);

-		Matrix4f scale = Matrix4f::scale(1.0f, 1.0f, 1.0f);

-		Matrix4f project = Matrix4f::perspective(1.0f, 10000.0f, fov, width / height);

-		Matrix4f end_matrix = project * move * rotate * scale;

-	

-		ObjModel projectedModel = model.multiplyMatrix(end_matrix);

-		projectedModel.divideW();

-		projectedModel.screenspace(width, height);

-		

-

-		render.fill(255, 255, 255);

-		render.resetZBuf();

-		render.renderModel(projectedModel, *modelTexture);

-		

-		texture.update((sf::Uint8*)render.pixels);

-		window.draw(sprite);

-		window.display();

-	}

+  if (model.isLoaded) {

+    std::cout << "Model loading time: " << model.loadingTime.count() << "s\n";

+    std::cout << "Vertices count: " << model.vertices.size() << "\nNumber of normals: " << model.normals.size() << "\nUV count: " << model.uvcoo.size() << "\n";

+    std::cout << "Number of faces: " << model.faces.size() << "\n";

+  }

+  else {

+    std::cerr << "Couldn't load and/or find model!\n";

+  }

+

+  if (textureLoaded && model.isLoaded) {

+    while (window.isOpen())

+    {

+      while (window.pollEvent(event))

+        if (event.type == sf::Event::Closed)

+          window.close();

+

+      time = clock.getElapsedTime();

+

+      Vertice a1, b1, c1, d1, e1, f1;

+

+      Matrix4f move = Matrix4f::move(0.0f, -150.0f, 600.0f);

+      Matrix4f rotate = Matrix4f::rotate(0.0f, time.asSeconds() * 25.0f, 0.0f);

+      Matrix4f scale = Matrix4f::scale(1.0f, 1.0f, 1.0f);

+      Matrix4f project = Matrix4f::perspective(1.0f, 10000.0f, fov, width / height);

+      Matrix4f end_matrix = project * move * rotate * scale;

+    

+      ObjModel projectedModel = model.multiplyMatrix(end_matrix);

+      projectedModel.divideW();

+      projectedModel.screenspace(width, height);

+      

+

+      render.fill(255, 255, 255);

+      render.resetZBuf();

+      render.renderModel(projectedModel, *modelTexture);

+      

+      texture.update((sf::Uint8*)render.pixels);

+      window.draw(sprite);

+      window.display();

+    }

+  }

 

   delete modelTexture;