texture methods

Author: lcbasu

OpenGL_T5/OpenGL_T5.xcodeproj/project.pbxproj

@@ -9,6 +9,8 @@
 /* Begin PBXBuildFile section */
 		1FE3E3A719A0A5B100DF3ABB /* main.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1FE3E3A619A0A5B100DF3ABB /* main.cpp */; };
 		1FE3E3A919A0A5B100DF3ABB /* OpenGL_T5.1 in CopyFiles */ = {isa = PBXBuildFile; fileRef = 1FE3E3A819A0A5B100DF3ABB /* OpenGL_T5.1 */; };
+		1FE3E3B119A0A60800DF3ABB /* GLUT.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1FE3E3AF19A0A60800DF3ABB /* GLUT.framework */; };
+		1FE3E3B219A0A60800DF3ABB /* OpenGL.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1FE3E3B019A0A60800DF3ABB /* OpenGL.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -28,13 +30,18 @@
 		1FE3E3A319A0A5B100DF3ABB /* OpenGL_T5 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = OpenGL_T5; sourceTree = BUILT_PRODUCTS_DIR; };
 		1FE3E3A619A0A5B100DF3ABB /* main.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = main.cpp; sourceTree = "<group>"; };
 		1FE3E3A819A0A5B100DF3ABB /* OpenGL_T5.1 */ = {isa = PBXFileReference; lastKnownFileType = text.man; path = OpenGL_T5.1; sourceTree = "<group>"; };
+		1FE3E3AF19A0A60800DF3ABB /* GLUT.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = GLUT.framework; path = Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/GLUT.framework; sourceTree = DEVELOPER_DIR; };
+		1FE3E3B019A0A60800DF3ABB /* OpenGL.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenGL.framework; path = Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/OpenGL.framework; sourceTree = DEVELOPER_DIR; };
+		1FE3E3B319A0A79800DF3ABB /* imageloader.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = imageloader.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
 		1FE3E3A019A0A5B100DF3ABB /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				1FE3E3B119A0A60800DF3ABB /* GLUT.framework in Frameworks */,
+				1FE3E3B219A0A60800DF3ABB /* OpenGL.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -44,6 +51,8 @@
 		1FE3E39A19A0A5B100DF3ABB = {
 			isa = PBXGroup;
 			children = (
+				1FE3E3AF19A0A60800DF3ABB /* GLUT.framework */,
+				1FE3E3B019A0A60800DF3ABB /* OpenGL.framework */,
 				1FE3E3A519A0A5B100DF3ABB /* OpenGL_T5 */,
 				1FE3E3A419A0A5B100DF3ABB /* Products */,
 			);
@@ -62,6 +71,7 @@
 			children = (
 				1FE3E3A619A0A5B100DF3ABB /* main.cpp */,
 				1FE3E3A819A0A5B100DF3ABB /* OpenGL_T5.1 */,
+				1FE3E3B319A0A79800DF3ABB /* imageloader.h */,
 			);
 			path = OpenGL_T5;
 			sourceTree = "<group>";
@@ -197,14 +207,18 @@
 		1FE3E3AD19A0A5B100DF3ABB /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SDKROOT = macosx10.8;
 			};
 			name = Debug;
 		};
 		1FE3E3AE19A0A5B100DF3ABB /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				MACOSX_DEPLOYMENT_TARGET = 10.8;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SDKROOT = macosx10.8;
 			};
 			name = Release;
 		};

OpenGL_T5/OpenGL_T5.xcodeproj/project.xcworkspace/xcshareddata/OpenGL_T5.xccheckout

@@ -5,7 +5,7 @@
 	<key>IDESourceControlProjectFavoriteDictionaryKey</key>
 	<false/>
 	<key>IDESourceControlProjectIdentifier</key>
-	<string>06069645-6B46-4F3A-ABC9-16CF36344B4F</string>
+	<string>20249D2C-ABA3-4068-B954-E018DACC5F6A</string>
 	<key>IDESourceControlProjectName</key>
 	<string>OpenGL_T5</string>
 	<key>IDESourceControlProjectOriginsDictionary</key>

OpenGL_T5/OpenGL_T5.xcodeproj/project.xcworkspace/xcuserdata/LokeshBasu.xcuserdatad/UserInterfaceState.xcuserstate

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Bucket
+   type = "1"
+   version = "2.0">
+</Bucket>

OpenGL_T5/OpenGL_T5.xcodeproj/xcuserdata/LokeshBasu.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist

@@ -0,0 +1,26 @@
+//
+//  imageloader.h
+//  OpenGL_T5
+//
+//  Created by Lokesh Basu on 17/08/14.
+//  Copyright (c) 2014 Samsung. All rights reserved.
+//
+
+#ifndef OpenGL_T5_imageloader_h
+#define OpenGL_T5_imageloader_h
+
+
+class Image
+{
+public:
+    Image(char *ps, int w, int h);
+    ~Image();
+    
+    char *pixels;
+    int width;
+    int height;
+};
+
+Image *loadBMP(const char *filename);
+
+#endif

OpenGL_T5/OpenGL_T5/imageloader.h

@@ -6,13 +6,130 @@
 //  Copyright (c) 2014 Samsung. All rights reserved.
 //
 
+#include <GLUT/glut.h>
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#include <stdlib.h>
 #include <iostream>
+#include "imageloader.h"
 
-int main(int argc, const char * argv[])
+using namespace std;
+
+void handleKeyPress(unsigned char key, int x, int y)
+{
+    switch (key)
+    {
+        case 27:
+            exit(0);
+    }
+}
+
+GLuint loadTexture(Image *image)
+{
+    GLuint textureId;
+    glGenTextures(1, &textureId); //make room for our texture
+    glBindTexture(GL_TEXTURE_2D, textureId); //tell OpenGL which texture to edit
+    //map the image to the texture
+    glTexImage2D(GL_TEXTURE_2D,         //always GL_TEXTURE_2D
+                 0,                     //0 for now
+                 GL_RGB,                //format OpenGL uses for image
+                 image->width,          //width
+                 image->height,         //height
+                 0,                     //the border of the image
+                 GL_RGB,                //GL_RGB because pixels are stored in RGB format
+                 GL_UNSIGNED_BYTE,      //GL_UNSIGNED_BYTE because pixels are stored as unsigned numbers
+                 image->pixels);        //the actual pixel data
+    
+    
+    return textureId; //return the id of the texture
+}
+
+GLuint _textureId; //The id of the texture
+
+void initRendering()
+{
+    glEnable(GL_DEPTH_TEST);
+    glEnable(GL_COLOR_MATERIAL);
+    glEnable(GL_LIGHTING);      //enable lighting
+    glEnable(GL_LIGHT0);        //enable light #0
+    glEnable(GL_NORMALIZE);     //automatically normalize normals
+    
+    Image *image = loadBMP("splash.bmp");
+    _textureId = loadTexture(image);
+    delete image;
+}
+
+// called when window is resized
+void handleResize(int w, int h)
+{
+    // tells opengl how to convert form coordinates to pixel values
+    glViewport(0, 0, w, h);
+    
+    glMatrixMode(GL_PROJECTION); //switch to setting the camera perspective
+    
+    // setting the camera perspective
+    glLoadIdentity(); // reset the camera
+    gluPerspective(45.0                     // the camera angle
+                   , (double)w/(double)h    // the width to height ratio
+                   , 1                      // the near z clipping co-ordinate
+                   , 200);                  // the far z clipping co-ordinate
+}
+
+float _angle = -70.0f;
+
+// drwas the 3D scene
+void drawScene()
 {
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    
+    glTranslatef(0.0f, 0.0f, -8.0f);
+    
+    //add ambient light
+    GLfloat ambientColor[] = {0.2f, 0.2f, 0.2f, 1.0f};
+    glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambientColor);
+    
+    GLfloat directedLight[] = {0.7f, 0.7f, 0.7f, 1.0f};
+    GLfloat directedLightPos[] = {-10.0f, 15.0f, 20.0f, 1.0f};
+    glLightfv(GL_LIGHT0, GL_DIFFUSE, directedLight);
+    glLightfv(GL_LIGHT0, GL_POSITION, directedLightPos);
+    
+    glEnable(GL_TEXTURE_2D);
+    glBindTexture(GL_TEXTURE_2D, _textureId);
+    
+}
 
-    // insert code here...
-    std::cout << "Hello, World!\n";
+void update(int value)
+{
+    _angle += 2.0f;
+    if (_angle > 360) {
+        _angle -= 360;
+    }
+    
+    glutPostRedisplay();
+    glutTimerFunc(25, update, 0);
+}
+
+int main(int argc, char * argv[])
+{
+    // initialize glut
+    glutInit(&argc, argv);
+    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
+    glutInitWindowSize(400, 400); // set the window size
+    
+    // create the window
+    glutCreateWindow("Lighting");
+    initRendering(); // initialize rendering
+    
+    // set handler function for drawing, keypress and window resizes
+    glutDisplayFunc(drawScene);
+    glutKeyboardFunc(handleKeyPress);
+    glutReshapeFunc(handleResize);
+    
+    glutTimerFunc(25, update, 0);
+    glutMainLoop(); // start the main loop. glutMainLoop doesn't return.
     return 0;
 }