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42 lines
1.7 KiB
C
42 lines
1.7 KiB
C
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#ifndef GFX_DIMENSIONS_H
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#define GFX_DIMENSIONS_H
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/*
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This file is for ports that want to enable widescreen.
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Change the definitions to the following:
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#include <math.h>
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#define GFX_DIMENSIONS_FROM_LEFT_EDGE(v) (SCREEN_WIDTH / 2 - SCREEN_HEIGHT / 2 * [current_aspect_ratio] + (v))
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#define GFX_DIMENSIONS_FROM_RIGHT_EDGE(v) (SCREEN_WIDTH / 2 + SCREEN_HEIGHT / 2 * [current_aspect_ratio] - (v))
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#define GFX_DIMENSIONS_RECT_FROM_LEFT_EDGE(v) ((int)floorf(GFX_DIMENSIONS_FROM_LEFT_EDGE(v)))
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#define GFX_DIMENSIONS_RECT_FROM_RIGHT_EDGE(v) ((int)ceilf(GFX_DIMENSIONS_FROM_RIGHT_EDGE(v)))
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#define GFX_DIMENSIONS_ASPECT_RATIO [current_aspect_ratio]
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The idea is that SCREEN_WIDTH and SCREEN_HEIGHT are still hardcoded to 320 and 240, and that
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x=0 lies at where a 4:3 left edge would be. On 16:9 widescreen, the left edge is hence at -53.33.
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To get better accuracy, consider using floats instead of shorts for coordinates in Vertex and Matrix structures.
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The conversion to integers above is for RECT commands which naturally only accept integer values.
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Note that RECT commands must be enhanced to support negative coordinates with this modification.
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*/
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#ifdef WIDESCREEN
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#error "widescreen not implemented"
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#else
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#define GFX_DIMENSIONS_FROM_LEFT_EDGE(v) (v)
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#define GFX_DIMENSIONS_FROM_RIGHT_EDGE(v) (SCREEN_WIDTH - (v))
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#define GFX_DIMENSIONS_RECT_FROM_LEFT_EDGE(v) (v)
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#define GFX_DIMENSIONS_RECT_FROM_RIGHT_EDGE(v) (SCREEN_WIDTH - (v))
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#define GFX_DIMENSIONS_ASPECT_RATIO (4.0f / 3.0f)
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#endif
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// If screen is taller than it is wide, radius should be equal to SCREEN_HEIGHT since we scale horizontally
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#define GFX_DIMENSIONS_FULL_RADIUS (SCREEN_HEIGHT * (GFX_DIMENSIONS_ASPECT_RATIO > 1 ? GFX_DIMENSIONS_ASPECT_RATIO : 1))
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#endif // GFX_DIMENSIONS_H
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