i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Replaced the boring 2D rendering with a colorful spinning 3D cube.

Browse Source 
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20807 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Philippe Houdoin
2007-04-25 00:44:56 +00:00
parent 3ab3db3143
commit 895eb46bc4
1 changed files with 82 additions and 79 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/tests/kits/opengl/direct_mode/GLDirectMode.cpp
+82 -79
View File
@@ -7,6 +7,9 @@
#include <DirectWindow.h>
#include <CheckBox.h>
#include <GLView.h>
#include <GL/glu.h>
#define REDRAW_MSG 'rdrw'
class SampleGLView : public BGLView
{
@@ -14,17 +17,18 @@ public:
SampleGLView(BRect frame, uint32 type);
virtual void AttachedToWindow(void);
virtual void FrameResized(float newWidth, float newHeight);
virtual void ErrorCallback(GLenum which);
virtual void MessageReceived(BMessage * msg);
void Render(void);
private:
void gInit(void);
void gDraw(void);
void gDraw(float rotation = 0);
void gReshape(int width, int height);
float width;
float height;
float width;
float height;
float rotate;
};
@@ -33,11 +37,14 @@ class SampleGLWindow : public BDirectWindow
{
public:
SampleGLWindow(BRect frame, uint32 type);
~SampleGLWindow();
virtual bool QuitRequested();
virtual void DirectConnected( direct_buffer_info *info );
private:
SampleGLView *theView;
BMessageRunner *updateRunner;
};
@@ -54,7 +61,7 @@ SampleGLApp::SampleGLApp()
: BApplication("application/x-vnd.sample")
{
BRect windowRect;
uint32 type = BGL_RGB|BGL_DOUBLE;
uint32 type = BGL_RGB|BGL_DOUBLE|BGL_DEPTH;
windowRect.Set(50, 50, 350, 350);
@@ -72,10 +79,20 @@ SampleGLWindow::SampleGLWindow(BRect frame, uint32 type)
theView = new SampleGLView(r, type);
AddChild(theView);
Show();
updateRunner = new BMessageRunner(BMessenger(theView),
new BMessage(REDRAW_MSG), 1000000/60 /* 60 fps */);
theView->Render();
}
SampleGLWindow::~SampleGLWindow()
{
delete updateRunner;
}
bool SampleGLWindow::QuitRequested()
{
theView->EnableDirectMode(false);
@@ -90,10 +107,10 @@ void SampleGLWindow::DirectConnected(direct_buffer_info *info)
theView->EnableDirectMode(true);
}
// ----
SampleGLView::SampleGLView(BRect frame, uint32 type)
: BGLView(frame, "SampleGLView", B_FOLLOW_ALL_SIDES, 0, type)
: BGLView(frame, "SampleGLView", B_FOLLOW_ALL_SIDES, 0, type), rotate(0)
{
width = frame.right-frame.left;
height = frame.bottom-frame.top;
@@ -126,93 +143,65 @@ void SampleGLView::FrameResized(float newWidth, float newHeight)
}
void SampleGLView::ErrorCallback(GLenum whichError)
{
// fprintf(stderr, "Unexpected error occured (%d):\\n", whichError);
// fprintf(stderr, " %s\\n", gluErrorString(whichError));
}
// globals
GLenum use_stipple_mode; // GL_TRUE to use dashed lines
GLenum use_smooth_mode; // GL_TRUE to use anti-aliased lines
GLint linesize; // Line width
GLint pointsize; // Point diameter
float pntA[3] = {
-160.0, 0.0, 0.0
};
float pntB[3] = {
-130.0, 0.0, 0.0
};
void SampleGLView::gInit(void)
{
glClearColor(0.0, 0.0, 0.0, 0.0);
glLineStipple(1, 0xF0E0);
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
use_stipple_mode = GL_FALSE;
use_smooth_mode = GL_TRUE;
linesize = 2;
pointsize = 6;
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);
}
void SampleGLView::gDraw(void)
void SampleGLView::gDraw(float rotation)
{
GLint i;
glClear(GL_COLOR_BUFFER_BIT);
glLineWidth(linesize);
/*
/* Clear the buffer, clear the matrix */
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
if (use_stipple_mode) {
glEnable(GL_LINE_STIPPLE);
} else {
glDisable(GL_LINE_STIPPLE);
}
*/
/* A step backward, then spin the cube */
glTranslatef(0, 0, -5);
glRotatef(rotation, 0, 0, 1);
glRotatef(rotation, 1, 0.6, 0);
glDisable(GL_POINT_SMOOTH);
/* We tell we want to draw quads */
glBegin (GL_QUADS);
/* Every four calls to glVertex, a quad is drawn */
glColor3f (0, 0, 0); glVertex3f (-1, -1, -1);
glColor3f (0, 0, 1); glVertex3f (-1, -1, 1);
glColor3f (0, 1, 1); glVertex3f (-1, 1, 1);
glColor3f (0, 1, 0); glVertex3f (-1, 1, -1);
glPushMatrix();
glPointSize(pointsize); // Set size for point
glColor3f (1, 0, 0); glVertex3f ( 1, -1, -1);
glColor3f (1, 0, 1); glVertex3f ( 1, -1, 1);
glColor3f (1, 1, 1); glVertex3f ( 1, 1, 1);
glColor3f (1, 1, 0); glVertex3f ( 1, 1, -1);
for (i = 0; i < 360; i += 5) {
glRotatef(5.0, 0,0,1); // Rotate right 5 degrees
glColor3f (0, 0, 0); glVertex3f (-1, -1, -1);
glColor3f (0, 0, 1); glVertex3f (-1, -1, 1);
glColor3f (1, 0, 1); glVertex3f ( 1, -1, 1);
glColor3f (1, 0, 0); glVertex3f ( 1, -1, -1);
if (use_smooth_mode) {
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
} else {
glDisable(GL_LINE_SMOOTH);
glDisable(GL_BLEND);
}
glColor3f (0, 1, 0); glVertex3f (-1, 1, -1);
glColor3f (0, 1, 1); glVertex3f (-1, 1, 1);
glColor3f (1, 1, 1); glVertex3f ( 1, 1, 1);
glColor3f (1, 1, 0); glVertex3f ( 1, 1, -1);
glColor3f(1.0, 1.0, 0.0); // Set color for line
glBegin(GL_LINE_STRIP); // And create the line
glVertex3fv(pntA);
glVertex3fv(pntB);
glEnd();
glColor3f (0, 0, 0); glVertex3f (-1, -1, -1);
glColor3f (0, 1, 0); glVertex3f (-1, 1, -1);
glColor3f (1, 1, 0); glVertex3f ( 1, 1, -1);
glColor3f (1, 0, 0); glVertex3f ( 1, -1, -1);
glDisable(GL_POINT_SMOOTH);
glDisable(GL_BLEND);
glColor3f (0, 0, 1); glVertex3f (-1, -1, 1);
glColor3f (0, 1, 1); glVertex3f (-1, 1, 1);
glColor3f (1, 1, 1); glVertex3f ( 1, 1, 1);
glColor3f (1, 0, 1); glVertex3f ( 1, -1, 1);
glColor3f(0.0, 1.0, 0.0); // Set color for point
glBegin(GL_POINTS);
glVertex3fv(pntA); // Draw point at one end
glVertex3fv(pntB); // Draw point at other end
glEnd();
}
glPopMatrix(); // Done with matrix
/* No more quads */
glEnd ();
/* End */
glFlush ();
}
@@ -221,7 +210,7 @@ void SampleGLView::gReshape(int width, int height)
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-175, 175, -175, 175, -1, 1);
gluPerspective(45, width / (float) height, 1, 500);
glMatrixMode(GL_MODELVIEW);
}
@@ -229,11 +218,25 @@ void SampleGLView::gReshape(int width, int height)
void SampleGLView::Render(void)
{
LockGL();
gDraw();
gDraw(rotate);
SwapBuffers();
UnlockGL();
}
void SampleGLView::MessageReceived(BMessage * msg)
{
switch (msg->what) {
case REDRAW_MSG:
Render();
/* Rotate a bit more */
rotate++;
break;
default:
BGLView::MessageReceived(msg);
}
}
int main(int argc, char *argv[])