1 files changed, 72 insertions, 1 deletions
diff --git a/sdl/gltools.c b/sdl/gltools.c
index 350f3db..d6c518f 100644
--- a/sdl/gltools.c
+++ b/sdl/gltools.c
@@ -164,6 +164,77 @@ GLbyte *gltLoadTGA(const char *szFileName, GLint *iWidth, GLint *iHeight,
     return pBits;
 }
 
+void gltDrawTriangle(void)
+{
+    M3DVector3f vNormal;
+    M3DVector3f vCorners[5] = {
+        { 0.0f, 0.6f, 0.0f },       /* top           0 */
+        { -0.5f, -0.2f, -.50f },    /* back left     1 */
+        { 0.5f, -0.2f, -0.50f },    /* back right    2 */
+        { 0.5f, -0.2f, 0.5f },      /* front right   3 */
+        { -0.5f, -0.2f, 0.5f }      /* front left    4 */
+    };
+
+    glBegin(GL_TRIANGLES);
+        /* bottom section - two triangles */
+        glNormal3f(0.0f, -1.0f, 0.0f);
+
+        /* map texture to geometry */
+        glTexCoord2f(1.0f, 1.0f);
+        glVertex3fv(vCorners[2]);
+        glTexCoord2f(0.0f, 1.0f);
+        glVertex3fv(vCorners[4]);
+        glTexCoord2f(0.0f, 0.0f);
+        glVertex3fv(vCorners[1]);
+        glTexCoord2f(1.0f, 1.0f);
+        glVertex3fv(vCorners[2]);
+        glTexCoord2f(1.0f, 0.0f);
+        glVertex3fv(vCorners[3]);
+        glTexCoord2f(0.0f, 0.0f);
+        glVertex3fv(vCorners[4]);
+        
+        /* front face */
+        m3dFindNormalf(vNormal, vCorners[0], vCorners[4], vCorners[3]);
+        glNormal3fv(vNormal);
+        glTexCoord2f(0.5f, 1.0f);
+        glVertex3fv(vCorners[0]);
+        glTexCoord2f(0.0f, 0.0f);
+        glVertex3fv(vCorners[4]);
+        glTexCoord2f(1.0f, 0.0f);
+        glVertex3fv(vCorners[3]);
+        
+        /* left face */
+        m3dFindNormalf(vNormal, vCorners[0], vCorners[1], vCorners[4]);
+        glNormal3fv(vNormal);
+        glTexCoord2f(0.5f, 1.0f);
+        glVertex3fv(vCorners[0]);
+        glTexCoord2f(0.0f, 0.0f);
+        glVertex3fv(vCorners[1]);
+        glTexCoord2f(1.0f, 0.0f);
+        glVertex3fv(vCorners[4]);
+
+        /* back face */
+        m3dFindNormalf(vNormal, vCorners[0], vCorners[2], vCorners[1]);
+        glNormal3fv(vNormal);
+        glTexCoord2f(0.5f, 1.0f);
+        glVertex3fv(vCorners[0]);
+        glTexCoord2f(0.0f, 0.0f);
+        glVertex3fv(vCorners[2]);
+        glTexCoord2f(1.0f, 0.0f);
+        glVertex3fv(vCorners[1]);
+        
+        /* right face */
+        m3dFindNormalf(vNormal, vCorners[0], vCorners[3], vCorners[2]);
+        glNormal3fv(vNormal);
+        glTexCoord2f(0.5f, 1.0f);
+        glVertex3fv(vCorners[0]);
+        glTexCoord2f(0.0f, 0.0f);
+        glVertex3fv(vCorners[3]);
+        glTexCoord2f(1.0f, 0.0f);
+        glVertex3fv(vCorners[2]);
+    glEnd();
+}
+
 void gltDrawUnitAxes(void)
 {
     GLUquadricObj *pObj; /* temporary, used for quadrics */
@@ -276,7 +347,7 @@ void gltDrawTorus(GLfloat majorRadius, GLfloat minorRadius, GLint numMajor,
 
 /* this function just specifically draws the jet */
 /* FIXME: needs to accepts parameters of location and lightning */
-void DrawJet(int nShadow)
+void gltDrawJet(int nShadow)
 {
     M3DVector3f vNormal;