diff options
| -rw-r--r-- | engines/testbed/graphics.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/engines/testbed/graphics.cpp b/engines/testbed/graphics.cpp index 82735bca5d..229c06c9ac 100644 --- a/engines/testbed/graphics.cpp +++ b/engines/testbed/graphics.cpp @@ -64,10 +64,8 @@ void GFXTestSuite::execute() { void GFXtests::drawEllipse(int cx, int cy, int a, int b) { - // top-left coordinates of rectangle enclosing the eclipse (cx - a, cy - a) - // length = width = 2a - // size of buffer = 4 * a * a - + // Take a buffer of screen size + byte buffer[200][320] = {{0}}; float theta; int x, y, x1, y1; @@ -75,6 +73,8 @@ void GFXtests::drawEllipse(int cx, int cy, int a, int b) { // Illuminate the center buffer[cx][cy] = 1; + // Illuminate the points lying on ellipse + for (theta = 0; theta <= PI / 2; theta += PI / 360 ) { x = (int)(b * sin(theta) + 0.5); y = (int)(a * cos(theta) + 0.5); @@ -153,7 +153,7 @@ bool GFXtests::aspectRatio() { Testsuite::displayMessage("Testing Aspect Ratio Correction.\n" "With this feature enabled games running at 320x200 should be scaled upto 320x240 pixels"); - // Draw a circle on the screen + // Draw an ellipse on the screen drawEllipse(100, 160, 72, 60); |