From 0db190f4530750233a76740cfc30e6719afa2712 Mon Sep 17 00:00:00 2001
From: outfrost <kotlet.bahn@gmail.com>
Date: Sat, 27 Jun 2020 03:34:57 +0200
Subject: [PATCH] Create keybinds for scene and render debug functionalities

---
 src/engine/input.c  | 24 +++++++++++++++++++++---
 src/engine/render.c | 25 ++++++++++---------------
 src/engine/render.h |  3 +++
 3 files changed, 34 insertions(+), 18 deletions(-)

diff --git a/src/engine/input.c b/src/engine/input.c
index 01d3c41..b843143 100644
--- a/src/engine/input.c
+++ b/src/engine/input.c
@@ -2,15 +2,33 @@
 
 #include <stdbool.h>
 
+#include "render.h"
+
 static void (*keyboardInputCallback) (int, int, int, int);
 
 
 
 void onKeyboardEvent(GLFWwindow* window, int key, int scancode, int action, int mods) {
-	bool handled = false;
+	if (!(mods & GLFW_MOD_CONTROL)) {
+		if (keyboardInputCallback) {
+			keyboardInputCallback(key, scancode, action, mods);
+		}
+		return;
+	}
 
-	if (!handled && keyboardInputCallback) {
-		keyboardInputCallback(key, scancode, action, mods);
+	switch (key) {
+		case GLFW_KEY_1:
+			if (action == GLFW_PRESS) {
+				debugScene = !debugScene;
+			}
+			break;
+		case GLFW_KEY_2:
+			if (action == GLFW_PRESS) {
+				debugRender = !debugRender;
+			}
+			break;
+		default:
+			break;
 	}
 }
 
diff --git a/src/engine/render.c b/src/engine/render.c
index d09a1a5..c3ddb3a 100644
--- a/src/engine/render.c
+++ b/src/engine/render.c
@@ -1,15 +1,12 @@
 #include "render.h"
 
-#include <stdbool.h>
-
 #include "geometry.h"
 #include "performance.h"
 
-#define SCENE_DEBUG_ 0
-#define RENDER_DEBUG_ 0
-
 float viewportAspectRatio = 1.0f;
 const Scene* cameraAnchor;
+bool debugScene = false;
+bool debugRender = false;
 
 static const float AXIS_RADIUS = 5.0f;
 
@@ -69,9 +66,11 @@ static void renderScene(const Scene* scene, const Transform baseTransform) {
 	glLoadTransposeMatrixf((const GLfloat*) &transform);
 
 	glDisable(GL_LIGHTING);
-#if SCENE_DEBUG_
-	drawAxes();
-#endif // SCENE_DEBUG_
+
+	if (debugScene) {
+		drawAxes();
+	}
+
 	glEnable(GL_LIGHTING);
 
 	if (scene->solid) {
@@ -128,11 +127,9 @@ static void drawAxes() {
 	glEnd();
 }
 
-#if RENDER_DEBUG_
-static GLfloat ab(GLfloat a) {
+static GLfloat absolute(GLfloat a) {
 	return a < 0 ? -a : a;
 }
-#endif // RENDER_DEBUG_
 
 static void drawSolid(const Solid* solid) {
 	if (solid == NULL) {
@@ -150,8 +147,7 @@ static void drawSolid(const Solid* solid) {
 		for (size_t faceIndex = 0; faceIndex < mesh.numFaces; ++faceIndex) {
 			const Face face = mesh.faces[faceIndex];
 			
-#if RENDER_DEBUG_
-			if (face.normals) {
+			if (debugRender && face.normals) {
 				glDisable(GL_LIGHTING);
 				glDisable(GL_TEXTURE_2D);
 				glBegin(GL_LINES);
@@ -159,7 +155,7 @@ static void drawSolid(const Solid* solid) {
 					size_t vertIndex = face.indices[i];
 					Vector3D vertex = mesh.vertices[vertIndex];
 					Vector3D normal = face.normals[i];
-					glColor3f(ab(normal.x), ab(normal.y), ab(normal.z));
+					glColor3f(absolute(normal.x), absolute(normal.y), absolute(normal.z));
 					glVertex3f(vertex.x, vertex.y, vertex.z);
 					glVertex3f(vertex.x + normal.x, vertex.y + normal.y, vertex.z + normal.z);
 				}
@@ -167,7 +163,6 @@ static void drawSolid(const Solid* solid) {
 				glEnable(GL_TEXTURE_2D);
 				glEnable(GL_LIGHTING);
 			}
-#endif // RENDER_DEBUG_
 			
 			GLenum faceMode;
 			switch (face.numIndices) {
diff --git a/src/engine/render.h b/src/engine/render.h
index f3be0a2..f1b40a1 100644
--- a/src/engine/render.h
+++ b/src/engine/render.h
@@ -1,12 +1,15 @@
 #ifndef ENGINE_RENDER_H_
 #define ENGINE_RENDER_H_
 
+#include <stdbool.h>
 #include <GLFW/glfw3.h>
 
 #include "scene.h"
 
 extern float viewportAspectRatio;
 extern const Scene* cameraAnchor;
+extern bool debugScene;
+extern bool debugRender;
 
 void initRender();
 void renderFrame(GLFWwindow* window);
-- 
2.44.0