int ImagingDrawPoint(Imaging im, int x0, int y0, const void* ink_, int op) { DRAW* draw; INT32 ink; DRAWINIT(); draw->point(im, x0, y0, ink); return 0; }
int ImagingDrawWideLine(Imaging im, int x0, int y0, int x1, int y1, const void* ink_, int width, int op) { DRAW* draw; INT32 ink; int dx, dy; double big_hypotenuse, small_hypotenuse, ratio_max, ratio_min; int dxmin, dxmax, dymin, dymax; Edge e[4]; DRAWINIT(); if (width <= 1) { draw->line(im, x0, y0, x1, y1, ink); return 0; } dx = x1-x0; dy = y1-y0; if (dx == 0 && dy == 0) { draw->point(im, x0, y0, ink); return 0; } big_hypotenuse = sqrt((double) (dx*dx + dy*dy)); small_hypotenuse = (width - 1) / 2.0; ratio_max = ROUND_UP(small_hypotenuse) / big_hypotenuse; ratio_min = ROUND_DOWN(small_hypotenuse) / big_hypotenuse; dxmin = ROUND_DOWN(ratio_min * dy); dxmax = ROUND_DOWN(ratio_max * dy); dymin = ROUND_DOWN(ratio_min * dx); dymax = ROUND_DOWN(ratio_max * dx); { int vertices[4][2] = { {x0 - dxmin, y0 + dymax}, {x1 - dxmin, y1 + dymax}, {x1 + dxmax, y1 - dymin}, {x0 + dxmax, y0 - dymin} }; add_edge(e+0, vertices[0][0], vertices[0][1], vertices[1][0], vertices[1][1]); add_edge(e+1, vertices[1][0], vertices[1][1], vertices[2][0], vertices[2][1]); add_edge(e+2, vertices[2][0], vertices[2][1], vertices[3][0], vertices[3][1]); add_edge(e+3, vertices[3][0], vertices[3][1], vertices[0][0], vertices[0][1]); draw->polygon(im, 4, e, ink, 0); } return 0; }