void G2DTestSystemDriver::DrawTextTest ()
{
// Draw a grid of lines so that transparent text background will be visible
int w = myG2D->GetWidth ();
int h = myG2D->GetHeight ();
int i;
for (i = 0; i < w; i += 4)
{
myG2D->DrawLine (float(i), 0.0f, float(i) + 50.0f, float(h), dsteel);
myG2D->DrawLine (float(w - i), 0.0f, float(w - i) - 50.0f, float(h), dsteel);
}
SetFont (fontItalic);
WriteCentered (0,-16*7, white, -1, "TEXT DRAWING TEST");
SetFont (fontLarge);
WriteCentered (0,-16*5, blue, -1, "This is blue text with transparent background");
WriteCentered (0,-16*4, green, blue, "This is green text on blue background");
WriteCentered (0,-16*3, yellow, gray, "Yellow text on gray background");
WriteCentered (0,-16*2, red, black, "Red text on black background");
WriteCentered (0,-16*1, black, white, "Black text on white background");
SetFont (fontCourier);
int sx = 0, sy = h / 2 + 48, sw = w, sh = h / 2 - 48;
myG2D->DrawBox (sx, sy, sw, sh, dsteel);
const char *text = "Crystal Space rulez";
int tw, th;
font->GetDimensions (text, tw, th);
size_t cc = strlen (text);
// Test text drawing performance for 1/4 seconds
int colors [4] = { red, green, blue, yellow };
sx += 20; sw -= 40 + tw;
sy += 10; sh -= 20 + th;
csRandomGen rng (csGetTicks ());
csTicks start_time = csGetTicks (), delta_time;
size_t char_count = 0;
do
{
for (i = 0; i < 2000; i++)
{
float x = sx + rng.Get () * sw;
float y = sy + rng.Get () * sh;
myG2D->Write (font, int(x), int(y), colors [rng.Get (4)], black, text);
char_count += cc;
}
myG2D->PerformExtension ("flush");
delta_time = csGetTicks () - start_time;
} while (delta_time < 500);
float perf = char_count * (1000.0f / delta_time);
SetFont (fontLarge);
WriteCentered (0, 16*1, green, black, " Performance: %20.1f characters/second ", perf);
}
void G2DTestSystemDriver::DrawLinePerf ()
{
SetFont (fontItalic);
WriteCentered (0,-16*4, white, -1, "LINE SLOPE AND PERFORMANCE TEST");
int w2 = myG2D->GetWidth () / 2;
int colors [4] = { red, green, blue, yellow };
int a;
for (a = 0; a < 360; a += 5)
{
float angle = (a * TWO_PI) / 360.0;
float x = w2 + 80 * cos (angle);
float y = 100 + 80 * sin (angle);
myG2D->DrawLine (w2, 100, x, y, colors [a & 3]);
}
// Compute the size for the random lines box
int sx = 0;
int sw = myG2D->GetWidth ();
int sy = myG2D->GetHeight () / 2;
int sh = sy;
myG2D->DrawBox (sx, sy + 16, sw, sh - 16, dsteel);
SetFont (fontLarge);
WriteCentered (0,-16*2, gray, -1, "Above this text you should see a uniformly hashed circle,");
WriteCentered (0,-16*1, gray, -1, "while below you should see some random lines, and the");
WriteCentered (0, 16*0, gray, -1, "measured line drawing performance in pixels per second.");
// Test line drawing performance for 1/4 seconds
sx += 20; sw -= 40;
sy += 30; sh -= 40;
csRandomGen rng (csGetTicks ());
csTicks start_time = csGetTicks (), delta_time;
float pix_count = 0;
do
{
for (a = 0; a < 5000; a++)
{
float x1 = sx + rng.Get () * sw;
float y1 = sy + rng.Get () * sh;
float x2 = sx + rng.Get () * sw;
float y2 = sy + rng.Get () * sh;
myG2D->DrawLine (x1, y1, x2, y2, colors [rng.Get (4)]);
x2 = csQint (x2 - x1); y2 = csQint (y2 - y1);
pix_count += csQsqrt (x2 * x2 + y2 * y2);
}
myG2D->PerformExtension ("flush");
delta_time = csGetTicks () - start_time;
} while (delta_time < 500);
pix_count = pix_count * (1000.0 / delta_time);
WriteCentered (0, 16*1, green, black, " Performance: %20.1f pixels/second ", pix_count);
}
void G2DTestSystemDriver::DrawAlphaTestScreen ()
{
int w = myG2D->GetWidth ();
int h = myG2D->GetHeight ();
myG2D->SetClipRect(0,0,w,h);
myG2D->DrawBox(0,0,w,h, dsteel);
SetFont (fontItalic);
WriteCentered (1, 1, white, -1, "ALPHA COLOR TEST");
SetFont (fontLarge);
WriteCentered (1, 16*2, black, -1, "If your current canvas is in 32-bit mode, you should");
WriteCentered (1, 16*3, black, -1, "see various text and geometry at various transparencies.");
myG2D->DrawBox (190, 80, 50, 100, black);
myG2D->DrawBox (20, 100, 150, 75, myG2D->FindRGB (205, 0, 125, 200));
myG2D->DrawBox (120, 100, 100, 50, myG2D->FindRGB (120, 50, 50, 100));
myG2D->DrawLine (30, 110, 120, 60, myG2D->FindRGB (255, 128, 128, 128));
myG2D->DrawLine (120, 60, 70, 120, myG2D->FindRGB (128, 255, 128, 128));
myG2D->DrawLine (70, 120, 30, 110, myG2D->FindRGB (128, 128, 255, 128));
if (alphaBlitImage.IsValid ())
{
myG2D->Blit (20, 160, alphaBlitImage->GetWidth (), alphaBlitImage->GetHeight (),
(unsigned char*)alphaBlitImage->GetImageData ());
}
myG2D->Write (font, 50, 140, myG2D->FindRGB (255, 255, 255, 100), -1,
L"Here is some partially transparent text");
myG2D->Write (font, 50, 150, myG2D->FindRGB (0, 0, 255, 150), -1,
L"overlaying partially transparent boxes.");
csString str;
int i;
int y = 140;
int tw, th;
font->GetMaxSize (tw, th);
for (i = 0; i < 6; i++)
{
const uint8 alpha = (i * 51);
str.Format ("FG has alpha %" PRIu8 , alpha);
myG2D->Write (font, 320, y, MakeColor (255, 255, 255, alpha),
black, str);
y += th;
str.Format ("BG has alpha %" PRIu8, alpha);
myG2D->Write (font, 320, y, white, MakeColor (0, 0, 0, alpha),
str);
y += th;
}
}
void G2DTestSystemDriver::DrawClipRect(int sx, int sy, int sw, int sh)
{
myG2D->DrawLine (sx, sy, sx + sw, sy, green);
myG2D->DrawLine (sx, sy + sh, sx + sw, sy + sh, green);
myG2D->DrawLine (sx, sy, sx, sy + sh, green);
myG2D->DrawLine (sx + sw, sy, sx + sw, sy + sh, green);
myG2D->DrawLine (sx+1, sy+1, sx + sw-1, sy+1, red);
myG2D->DrawLine (sx+1, sy + sh-1, sx + sw-1, sy + sh-1, red);
myG2D->DrawLine (sx+1, sy+1, sx+1, sy + sh-1, red);
myG2D->DrawLine (sx + sw - 1, sy+1, sx + sw - 1, sy + sh-1, red);
}
void G2DTestSystemDriver::LineClipTest ()
{
int w = myG2D->GetWidth ();
int h = myG2D->GetHeight ();
myG2D->SetClipRect(0,0,w,h);
myG2D->DrawBox(0,0,w,h, dsteel);
SetFont (fontItalic);
WriteCentered (0,-16*4, white, -1, "LINE CLIP TEST");
SetFont (fontLarge);
WriteCentered (0,-16*1, black, dsteel, "This will test if line clipping is being done properly");
WriteCentered (0,0, black, dsteel, "You should see 3 thin green rectangles below with black");
WriteCentered (0,16*1, black, dsteel, "inside each. Like before we want no black on the green while the");
WriteCentered (0,16*2, black, dsteel, "red should be covered. The first box is drawing horizontal lines, ");
WriteCentered (0,16*3, black, dsteel, "the second, vertical lines, and the third, random diagonal lines.");
SetFont (fontCourier);
int sx1 = w/7, sx2 = 3*sx1, sx3 = 5*sx1, sy = h / 2 + 60, sw = w/7, sh = h / 4 - 60;
DrawClipRect(sx1, sy, sw, sh);
DrawClipRect(sx2, sy, sw, sh);
DrawClipRect(sx3, sy, sw, sh);
// Test random pixel drawing
csRandomGen rng (csGetTicks ());
csTicks start_time = csGetTicks (), delta_time;
// widen the range where we try to draw pixels
int sx1_big = sx1 - 10;
int sx2_big = sx2 - 10;
int sx3_big = sx3 - 10;
int sy_big = sy - 10;
int sw_big = sw + 20;
int sh_big = sh + 20;
do
{
int i;
myG2D->SetClipRect(sx1 + 1, sy + 1, sx1 + sw, sy + sh);
for (i = 0; i < 10; i++)
{
float x1 = sx1_big + rng.Get () * sw_big;
float x2 = sx1_big + rng.Get () * sw_big;
float y = sy_big + rng.Get () * sh_big;
myG2D->DrawLine(x1,y,x2,y,black);
}
myG2D->SetClipRect(sx2 + 1, sy + 1, sx2 + sw, sy + sh);
for (i = 0; i < 100; i++)
{
float x = sx2_big + rng.Get () * sw_big;
float y1 = sy_big + rng.Get () * sh_big;
float y2 = sy_big + rng.Get () * sh_big;
myG2D->DrawLine(x,y1,x,y2,black);
}
myG2D->SetClipRect(sx3 + 1, sy + 1, sx3 + sw, sy + sh);
for (i = 0; i < 100; i++)
{
float x1 = sx3_big + rng.Get () * sw_big;
float y1 = sy_big + rng.Get () * sh_big;
float x2 = sx3_big + rng.Get () * sw_big;
float y2 = sy_big + rng.Get () * sh_big;
myG2D->DrawLine(x1,y1,x2,y2,black);
}
delta_time = csGetTicks () - start_time;
} while (delta_time < 100);
}
void G2DTestSystemDriver::DrawLineTest ()
{
#if 0
// some tests for some special kinds of lines
myG2D->DrawLine (0, 0, 200, 200, yellow);
myG2D->DrawLine (0, 0, 205, 200, red);
myG2D->DrawLine (0, 0, 195, 200, green);
int w = myG2D->GetWidth ();
myG2D->DrawLine (0, 250, w / 3, 250, red);
myG2D->DrawLine (w / 3, 250.1, w * 2 / 3, 250.1, red);
myG2D->DrawLine (w * 2 / 3, 250.99, w, 250.99, red);
myG2D->DrawLine (200, myG2D->GetHeight () - 200, 0, myG2D->GetHeight (), blue);
myG2D->DrawLine (81, 221, 519, 221, white);
#else
SetFont (fontItalic);
WriteCentered (0,-16*5, white, -1, "LINE DRAWING TEST");
SetFont (fontLarge);
WriteCentered (0,-16*3, gray, -1, "At the top of the screen you should see a sinusoid,");
WriteCentered (0,-16*2, gray, -1, "each point on sinusoid should be connected with the");
WriteCentered (0,-16*1, gray, -1, "top-left corner of the canvas.");
float py = -1;
int a;
for (a = 0; a <= myG2D->GetWidth (); a += 8)
{
float angle = float (a) / 30;
float y = int (80 + sin (angle) * 60);
if (py > 0)
myG2D->DrawLine (a - 8, py, a, y, red);
myG2D->DrawLine (0, 0, a, y, yellow);
py = y;
}
WriteCentered (0, 16*1, gray, -1, "At the bottom of the screen you should see several");
WriteCentered (0, 16*2, gray, -1, "lines interruped by a white pixel in the middle.");
int w = myG2D->GetWidth ();
float x = (w / 2) + 0.5;
float y = myG2D->GetHeight () - 50.5;
myG2D->DrawPixel (int(x), int(y), white);
myG2D->DrawLine (0, y - 0.5, x - 0.5, y - 0.5, red);
myG2D->DrawLine (x + 0.5, y + 0.49, w, y + 0.49, red);
// Compute the slope for a line that is going through (x,y)
float y1 = y - 5;
float y2 = y + 5;
float dy = float (y2 - y1) / float (w);
float y11 = y1 + (x - 0.5 ) * dy;
float y12 = y1 + (x + 0.5) * dy;
myG2D->DrawLine (0, y1, x - 0.5, y11, blue);
myG2D->DrawLine (x + 0.5, y12, w, y2, blue);
myG2D->DrawLine (x, y - 20, x, y - 0.5, gray);
myG2D->DrawLine (x, y + 0.5, x, y + 20, gray);
WriteCentered (0, 16*4, gray, -1, "A little above you should see four adjanced horizontal");
WriteCentered (0, 16*5, gray, -1, "lines of blue, green, red and yellow colors.");
myG2D->DrawLine (0, y - 43 - 0.5, w - 0.9, y - 43, blue);
myG2D->DrawLine (0, y - 42 + 0.49, w + 0.9, y - 42, green);
myG2D->DrawLine (0, y - 41, w, y - 41 - 0.5, red);
myG2D->DrawLine (0, y - 40, w - 0.5, y - 40 + 0.49, yellow);
#endif
}
