Add FPS counter and unlock webcam framerate

Maybe disable webcam view altogether and make it a compiler flag?

src/cv.cpp

@@ -131,5 +131,5 @@ void cvFrame() {
 
 void cvShowFrame() {
 	cv::imshow("Video Input", frame);
-	cv::waitKey(32);
+	cv::waitKey(1);
 }

src/graphics.cpp

@@ -10,7 +10,10 @@
 
 #include <webp/decode.h>
 
+#include <fmt/core.h>
+
 #include <iostream>
+#include <chrono>
 
 #include <graphics.hpp>
 #include <modelpart.hpp>
@@ -26,6 +29,9 @@ GLuint transUniform;	//location of the "transMatrix" transformation matrix unifo
 
 float windowAspectRatio;
 
+int frameCount;
+std::chrono::high_resolution_clock::time_point secondStart;
+
 //parts of the model (see modelpart.hpp)
 Model* model;
 
@@ -76,6 +82,13 @@ void initBuffers (GLuint* vaoNum) {
 	glEnableVertexAttribArray(uvAttr);
 }
 
+void fpsCounterReset() {
+	glutSetWindowTitle(fmt::format("{0} - {1} @ {2} FPS", PROJECT_NAME, model->getName(), frameCount).c_str());
+
+	secondStart = std::chrono::high_resolution_clock::now();
+	frameCount = 0;
+}
+
 void initGraphics () {
 	int argc = 1;
 	char *argv[1] = {(char*)"fc2d"};
@@ -91,7 +104,7 @@ void initGraphics () {
 
 	model = new Model(resolvePath(("models/"+optData.model+".fma").c_str()).c_str());
 
-	glutSetWindowTitle((PROJECT_NAME " - " + model->getName()).c_str());
+	fpsCounterReset();
 
 	//enable blending for alpha textures
 	glEnable(GL_BLEND);
@@ -191,6 +204,14 @@ void initShader() {
 
 void graphicsFrame () {
 	glutMainLoopEvent();
+
+	auto timeSinceSecondStart = std::chrono::high_resolution_clock::now() - secondStart;
+	frameCount++;
+	long usSinceSecondStart = std::chrono::duration_cast<std::chrono::microseconds>(timeSinceSecondStart).count();
+
+	if (usSinceSecondStart >= 1000000) {
+		fpsCounterReset();
+	}
 }
 
 void printShaderCompileLog(GLuint shader) {