From: outfrost <kotlet.bahn@gmail.com>
Date: Mon, 5 Nov 2018 02:12:32 +0000 (+0100)
Subject: Render loaded aiScene primitively
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=1bbba195f731f9e425d2f258b474b502b198dc8e;p=shadowclad.git

Render loaded aiScene primitively
---

diff --git a/main.c b/main.c
index cec65b9..7040978 100644
--- a/main.c
+++ b/main.c
@@ -23,8 +23,14 @@ int main(int argc, char** argv) {
 	
 	init_render();
 	
-	import_model("out/assets/wall01.3ds");
-	
+	model = import_model("out/assets/wall01.3ds");
+	/*
+	fprintf(stderr, "*model = ");
+	print_struct_aiScene(stderr, model);
+	fprintf(stderr, "\n*(*model).mRootNode = ");
+	print_struct_aiNode(stderr, (*model).mRootNode);
+	fprintf(stderr, "\n");
+	*/
 	glutMainLoop();
 	return 0;
 }
diff --git a/render.c b/render.c
index 425fc35..c9aa5dc 100644
--- a/render.c
+++ b/render.c
@@ -1,4 +1,5 @@
 #include <GL/glut.h>
+#include <assimp/scene.h>
 
 #include "render.h"
 #include "typedefs.h"
@@ -10,6 +11,7 @@ void render_scene() {
 	glLoadIdentity();
 	
 	draw_axes();
+	draw_model_recursive(model, (*model).mRootNode);
 	
 	glFlush();
 	glutSwapBuffers();
@@ -41,3 +43,37 @@ void draw_axes() {
 	glVertex3fv(z_axis_end);
 	glEnd();
 }
+
+void draw_model_recursive(const struct aiScene* model, const struct aiNode* node) {
+	if (((*model).mFlags & AI_SCENE_FLAGS_INCOMPLETE) == AI_SCENE_FLAGS_INCOMPLETE) {
+		return;
+	}
+	
+	for (int i = 0; i < (*node).mNumMeshes; ++i) {
+		const struct aiMesh* mesh = (*model).mMeshes[(*node).mMeshes[i]];
+		for (int k = 0; k < (*mesh).mNumFaces; ++k) {
+			const struct aiFace face = (*mesh).mFaces[k];
+			
+			GLenum face_mode;
+			switch(face.mNumIndices) {
+				case 1: face_mode = GL_POINTS; break;
+				case 2: face_mode = GL_LINES; break;
+				case 3: face_mode = GL_TRIANGLES; break;
+				default: face_mode = GL_POLYGON; break;
+			}
+			
+			glBegin(face_mode);
+			
+			glColor3f(1.0f, 1.0f, 1.0f);
+			for (int l = 0; l < face.mNumIndices; ++l) {
+				glVertex3fv((const GLfloat*) &(*mesh).mVertices[face.mIndices[l]]);
+			}
+			
+			glEnd();
+		}
+	}
+	
+	for (int i = 0; i < (*node).mNumChildren; ++i) {
+		draw_model_recursive(model, (*node).mChildren[i]);
+	}
+}
diff --git a/render.h b/render.h
index 659c4b6..86c3c95 100644
--- a/render.h
+++ b/render.h
@@ -1,7 +1,10 @@
 #ifndef RENDER_H_
 #define RENDER_H_
 
+const struct aiScene* model;
+
 void render_scene();
 void draw_axes();
+void draw_model_recursive(const struct aiScene* model, const struct aiNode* node);
 
 #endif