OpenGL hacks.

[dcpomatic.git] / hacks / gl / drawable.cc

diff --git a/hacks/gl/drawable.cc b/hacks/gl/drawable.cc
new file mode 100644 (file)
index 0000000..ba790fe
--- /dev/null
+++ b/hacks/gl/drawable.cc
@@ -0,0 +1,113 @@
+#include "drawable.h"
+#include <iostream>
+
+#ifdef __WXMAC__
+#include "OpenGL/gl.h"
+#else
+#include <GL/gl.h>
+#endif
+
+#include "wx/wx.h"
+
+/*
+ * This is a simple class built on top of OpenGL that manages drawing images in a higher-level and quicker way.
+ */
+
+DrawableThing::DrawableThing(Image* image_arg)
+{
+
+    x=0;
+    y=0;
+    hotspotX=0;
+    hotspotY=0;
+    angle=0;
+
+    xscale=1;
+    yscale=1;
+
+    xflip=false;
+    yflip=false;
+
+    if(image_arg!=NULL) setImage(image_arg);
+    else image=NULL;
+}
+
+void DrawableThing::setFlip(bool x, bool y)
+{
+    xflip=x;
+    yflip=y;
+}
+
+void DrawableThing::setHotspot(int x, int y)
+{
+    hotspotX=x;
+    hotspotY=y;
+}
+
+void DrawableThing::move(int x, int y)
+{
+    DrawableThing::x=x;
+    DrawableThing::y=y;
+}
+
+void DrawableThing::scale(float x, float y)
+{
+    DrawableThing::xscale=x;
+    DrawableThing::yscale=y;
+}
+
+void DrawableThing::scale(float k)
+{
+    DrawableThing::xscale=k;
+    DrawableThing::yscale=k;
+}
+
+void DrawableThing::setImage(Image* image)
+{
+    DrawableThing::image=image;
+}
+
+void DrawableThing::rotate(int angle)
+{
+    DrawableThing::angle=angle;
+}
+
+void DrawableThing::render()
+{
+    assert(image!=NULL);
+
+    glLoadIdentity();
+
+    glTranslatef(x,y,0);
+
+    if(xscale!=1 || yscale!=1)
+       {
+        glScalef(xscale, yscale, 1);
+    }
+
+    if(angle!=0)
+       {
+        glRotatef(angle, 0,0,1);
+    }
+
+    glBindTexture(GL_TEXTURE_2D, image->getID()[0] );
+
+    glBegin(GL_QUADS);
+
+    printf("%f %f %d %d\n", image->tex_coord_x, image->tex_coord_y, hotspotX, hotspotY);
+
+    glTexCoord2f(xflip? image->tex_coord_x : 0, yflip? 0 : image->tex_coord_y);
+    glVertex2f( -hotspotX, -hotspotY );
+
+    glTexCoord2f(xflip? 0 : image->tex_coord_x, yflip? 0 : image->tex_coord_y);
+    glVertex2f( image->width-hotspotX, -hotspotY );
+
+    glTexCoord2f(xflip? 0 : image->tex_coord_x, yflip? image->tex_coord_y : 0);
+    glVertex2f( image->width-hotspotX, image->height-hotspotY );
+
+    glTexCoord2f(xflip? image->tex_coord_x : 0, yflip? image->tex_coord_y : 0);
+    glVertex2f( -hotspotX, image->height-hotspotY );
+
+    glEnd();
+
+}