From 295ff719ec8db6df738d0210005a948eb2507c77 Mon Sep 17 00:00:00 2001
From: Ash Tyndall <git@atyndall.net>
Date: Sat, 22 Oct 2011 11:24:59 +0800
Subject: [PATCH]

---
 globals.c |  4 ++--
 globals.h |  4 ++--
 helper.c  |  3 ++-
 scene.c   | 32 ++++++++++++++++++++------------
 types.h   |  9 +++++++--
 5 files changed, 33 insertions(+), 19 deletions(-)

diff --git a/globals.c b/globals.c
index 948327e..c79395a 100644
--- a/globals.c
+++ b/globals.c
@@ -91,8 +91,8 @@ GLfloat emission[] = {0.0, 0.3, 0.3, 1.0};
 
 /* Zoom and rotate tracking */
 GLfloat zoom = 0.0, rotate = 0.0, camAngle = 40.0;
-GLfloat zoomFactor = 0.2, rotateFactor = 0.5, camAngleFactor = 0.5;
-GLfloat leftrightFactor = 0.5, nearfarFactor = 0.5, bigsmallFactor = 0.6, updownFactor = 0.03;
+GLfloat zoomFactor = 0.2, camRotateFactor = 0.5, camAngleFactor = 0.5;
+GLfloat leftrightFactor = 0.5, nearfarFactor = 0.5, bigsmallFactor = 0.6, updownFactor = 0.03, rotateFactor = 0.8, texscaleFactor = 0.5;
 
 /* Beginning width, height */
 int width = 500, height = 500;
diff --git a/globals.h b/globals.h
index c7d62d2..5dd4300 100644
--- a/globals.h
+++ b/globals.h
@@ -83,8 +83,8 @@ extern int width, height;
 
 /* Zoom and rotate tracking */
 extern GLfloat zoom, rotate, camAngle;
-extern GLfloat zoomFactor, rotateFactor, camAngleFactor;
-extern GLfloat leftrightFactor, nearfarFactor, bigsmallFactor, updownFactor;
+extern GLfloat zoomFactor, camRotateFactor, camAngleFactor;
+extern GLfloat leftrightFactor, nearfarFactor, bigsmallFactor, updownFactor, rotateFactor, texscaleFactor;
 
 /* Texture state tracking */
 extern int currentGroundTexture, currentMeshTexture;
diff --git a/helper.c b/helper.c
index 1e7c568..ab96c88 100644
--- a/helper.c
+++ b/helper.c
@@ -299,7 +299,8 @@ int addSceneObject(int id) {
   curObject = nObjects;
 
   sceneObjs[nObjects].mesh = -1; // Teapot is -1 mesh
-  sceneObjs[nObjects].texture = -1; // No texture
+  sceneObjs[nObjects].texture.id = -1; // No texture
+  sceneObjs[nObjects].texture.scale = 1;
   sceneObjs[nObjects].x = 0;
   sceneObjs[nObjects].y = 0;
   sceneObjs[nObjects].z = 0;
diff --git a/scene.c b/scene.c
index 8d875b0..a0fbff1 100644
--- a/scene.c
+++ b/scene.c
@@ -121,7 +121,7 @@ void processObjectEvents(int id) {
  */
 void processTextureEvents(int id) {
   if ( curObject >= 0 ) {
-    sceneObjs[curObject].texture = id;
+    sceneObjs[curObject].texture.id = id;
     glutPostRedisplay();
   }
 }
@@ -307,9 +307,9 @@ void motion(int x, int y) {
         // w: left/right, h: near/far
 
         // **NOTE: Currently a work in progress
-        printf("cam angle: %f\n", rotate*rotateFactor);
-        sceneObjs[curObject].x += diffx * sin(rotate*rotateFactor);
-        sceneObjs[curObject].z += diffx * cos(rotate*rotateFactor);
+        printf("cam angle: %f\n", rotate*camRotateFactor);
+        sceneObjs[curObject].x += diffx * sin(rotate*camRotateFactor);
+        sceneObjs[curObject].z += diffx * cos(rotate*camRotateFactor);
 
       } else if ( buttonSelected == GLUT_MIDDLE_BUTTON ) {
         // w: big/small
@@ -328,12 +328,17 @@ void motion(int x, int y) {
 
     case STATE_OBJECT_ROTATION_TEXTURE_SCALE:
       if ( buttonSelected == GLUT_LEFT_BUTTON ) {
-        // w: rotate on width, h: rotate on h
-        sceneObjs[curObject].rotation.x += diffy * rotateFactor;
+        // w: rotate on y
         sceneObjs[curObject].rotation.y += diffx * rotateFactor;
+        // h: rotate on x
+        sceneObjs[curObject].rotation.x += diffy * rotateFactor;
       } else if ( buttonSelected == GLUT_MIDDLE_BUTTON ) {
-        // w: rotate on height, h: texture scale
-        
+        // w: rotate on x
+        sceneObjs[curObject].rotation.x += diffx * rotateFactor;
+        // h: texture scale
+        float max = (float)height/texscaleFactor;
+        float scaling = (diffy + max) / max;
+        sceneObjs[curObject].texture.scale *= scaling;
       }
       break;
 
@@ -401,7 +406,7 @@ void display() {
   glPushMatrix();
 
     /* Perform scene rotations based on user mouse/keyboard input. */
-    glRotatef(rotate*rotateFactor, 0.0, 1.0, 0.0);
+    glRotatef(rotate*camRotateFactor, 0.0, 1.0, 0.0);
     glTranslatef(camx, camy, camz);
     glRotatef(keyrot, 1.0, 0.0, 0.0);
 
@@ -427,9 +432,12 @@ void display() {
         glTranslatef(so.x, so.y, so.z);
 
         // Apply texture
-        if ( so.texture > 0 ) {
-          getTexture(so.texture);
-          glBindTexture(GL_TEXTURE_2D, so.texture);
+        if ( so.texture.id > 0 ) {
+          getTexture(so.texture.id);
+          glBindTexture(GL_TEXTURE_2D, so.texture.id);
+          glMatrixMode(GL_TEXTURE);
+          glScalef(so.texture.scale, so.texture.scale, so.texture.scale);
+          glMatrixMode(GL_MODELVIEW);
         } else {
           glBindTexture(GL_TEXTURE_2D, 0);
         }
diff --git a/types.h b/types.h
index 3c0b75b..0d7110e 100644
--- a/types.h
+++ b/types.h
@@ -38,10 +38,15 @@ typedef struct {
     GLfloat x, y, z;    // Amount of rotation on axis
 } transform;
 
+typedef struct {
+    int id;
+    GLfloat scale;
+} texturedat;
+
 typedef struct {
     int mesh;           // Mesh index number
-    int texture;        // Texture index number
-    GLfloat x,y,z;        // Scene position
+    texturedat texture; // Texture index number
+    GLfloat x,y,z;      // Scene position
     GLfloat scale[3];   // Scale vector
     transform rotation; // Rotation transformation
 } SceneObject;
-- 
2.20.1