286     lv_grad_radial_state_t * state = lv_malloc(sizeof(lv_grad_radial_state_t));  in lv_gradient_radial_setup()  local
287     dsc->state = state;  in lv_gradient_radial_setup()
308     state->cgrad = lv_gradient_get(dsc, 256, 0);  in lv_gradient_radial_setup()
310     state->x0 = start.x;  in lv_gradient_radial_setup()
311     state->y0 = start.y;  in lv_gradient_radial_setup()
312     state->r0 = r_start;  in lv_gradient_radial_setup()
316         state->a4 = lv_sqr(dr) << 2;  in lv_gradient_radial_setup()
317         state->bpx = 0;  in lv_gradient_radial_setup()
318         state->bpy = 0;  in lv_gradient_radial_setup()
319         state->bc = (state->r0 * dr) << 1;  in lv_gradient_radial_setup()
320         state->dx = 0;  in lv_gradient_radial_setup()
321         state->inv_dr = (1 << (8 + 16)) / dr;  in lv_gradient_radial_setup()
326         state->dx = dx;    /* needed for incremental calculation */  in lv_gradient_radial_setup()
327         state->a4 = (lv_sqr(dr) - lv_sqr(dx) - lv_sqr(dy)) << 2;  in lv_gradient_radial_setup()
329         state->bpx = dx << 1;  in lv_gradient_radial_setup()
330         state->bpy = dy << 1;  in lv_gradient_radial_setup()
331         state->bc = (state->r0 * dr - state->x0 * dx - state->y0 * dy) << 1;  in lv_gradient_radial_setup()
333     state->inv_a4 = state->a4 != 0 ? (1 << (13 + 16)) / state->a4 : 0;  in lv_gradient_radial_setup()
339 …       lv_area_set(&state->clip_area, end.x - r_end, end.y - r_end, end.x  + r_end, end.y + r_end);  in lv_gradient_radial_setup()
342 …lv_area_set(&state->clip_area, start.x - r_start, start.y - r_start, start.x  + r_start, start.y +…  in lv_gradient_radial_setup()
346         state->clip_area.x1 = -0x7fffffff;  in lv_gradient_radial_setup()
352     lv_grad_radial_state_t * state = dsc->state;  in lv_gradient_radial_cleanup()  local
353     if(state == NULL)  in lv_gradient_radial_cleanup()
355     if(state->cgrad)  in lv_gradient_radial_cleanup()
356         lv_gradient_cleanup(state->cgrad);  in lv_gradient_radial_cleanup()
357     lv_free(state);  in lv_gradient_radial_cleanup()
363     lv_grad_radial_state_t * state = (lv_grad_radial_state_t *)dsc->state;  in lv_gradient_radial_get_line()  local
366     lv_grad_t * grad = state->cgrad;  in lv_gradient_radial_get_line()
372     if(state->clip_area.x1 != -0x7fffffff) {  in lv_gradient_radial_get_line()
384         if(yp < state->clip_area.y1 ||  in lv_gradient_radial_get_line()
385            yp >= state->clip_area.y2 ||  in lv_gradient_radial_get_line()
386            xp >= state->clip_area.x2 ||  in lv_gradient_radial_get_line()
387            xp + width < state->clip_area.x1) {  in lv_gradient_radial_get_line()
391             int32_t _x1 = LV_MAX(xp, state->clip_area.x1);  in lv_gradient_radial_get_line()
392             int32_t _x2 = LV_MIN(xp + width, state->clip_area.x2);  in lv_gradient_radial_get_line()
400     b = xp * state->bpx + yp * state->bpy + state->bc;  in lv_gradient_radial_get_line()
401     c = lv_sqr(state->r0) - lv_sqr(xp - state->x0) - lv_sqr(yp - state->y0);  in lv_gradient_radial_get_line()
403     db = state->dx << 1;  in lv_gradient_radial_get_line()
404     dc = ((xp - state->x0) << 1) + 1;  in lv_gradient_radial_get_line()
406     if(state->a4 == 0) {   /* not a quadratic equation: solve linear equation: w = -c/b */  in lv_gradient_radial_get_line()
417         if(state->bpx ||  in lv_gradient_radial_get_line()
418 …state->bpy) {    /* general case (circles are not concentric): w = (-b + sqrt(b^2 - 4ac))/2a (we o…  in lv_gradient_radial_get_line()
419             int32_t a4 = state->a4 >> 4;  in lv_gradient_radial_get_line()
423                 w = det < 0 ? 0 : extend_w(((lv_sqrt32(det) - (b >> 4)) * state->inv_a4) >>  16,  in lv_gradient_radial_get_line()
433             c = lv_sqr(xp - state->x0) + lv_sqr(yp - state->y0);  in lv_gradient_radial_get_line()
435                 w = extend_w((((lv_sqrt32(c) - state->r0)) * state->inv_dr) >> 16, dsc->extend);  in lv_gradient_radial_get_line()
473     lv_grad_linear_state_t * state = lv_malloc(sizeof(lv_grad_linear_state_t));  in lv_gradient_linear_setup()  local
474     dsc->state = state;  in lv_gradient_linear_setup()
477     state->cgrad = lv_gradient_get(dsc, 256, 0);  in lv_gradient_linear_setup()
493     state->a = (dx << 16) / l2;  in lv_gradient_linear_setup()
494     state->b = (dy << 16) / l2;  in lv_gradient_linear_setup()
495     state->c = ((start.x * dx + start.y * dy) << 16) / l2;  in lv_gradient_linear_setup()
500     lv_grad_linear_state_t * state = dsc->state;  in lv_gradient_linear_cleanup()  local
501     if(state == NULL)  in lv_gradient_linear_cleanup()
503     if(state->cgrad)  in lv_gradient_linear_cleanup()
504         lv_free(state->cgrad);  in lv_gradient_linear_cleanup()
505     lv_free(state);  in lv_gradient_linear_cleanup()
511     lv_grad_linear_state_t * state = (lv_grad_linear_state_t *)dsc->state;  in lv_gradient_linear_get_line()  local
514     lv_grad_t * grad = state->cgrad;  in lv_gradient_linear_get_line()
519     x = xp * state->a + yp * state->b - state->c;  in lv_gradient_linear_get_line()
520     d = state->a;  in lv_gradient_linear_get_line()
547     lv_grad_conical_state_t * state = lv_malloc(sizeof(lv_grad_conical_state_t));  in lv_gradient_conical_setup()  local
548     dsc->state = state;  in lv_gradient_conical_setup()
551     state->cgrad = lv_gradient_get(dsc, 256, 0);  in lv_gradient_conical_setup()
563     state->x0 = c0.x;  in lv_gradient_conical_setup()
564     state->y0 = c0.y;  in lv_gradient_conical_setup()
565     state->a = alpha;  in lv_gradient_conical_setup()
566     state->da = beta - alpha;  in lv_gradient_conical_setup()
567     state->inv_da = (1 << 16) / (beta - alpha);  in lv_gradient_conical_setup()
572     lv_grad_conical_state_t * state = dsc->state;  in lv_gradient_conical_cleanup()  local
573     if(state == NULL)  in lv_gradient_conical_cleanup()
575     if(state->cgrad)  in lv_gradient_conical_cleanup()
576         lv_free(state->cgrad);  in lv_gradient_conical_cleanup()
577     lv_free(state);  in lv_gradient_conical_cleanup()
583     lv_grad_conical_state_t * state = (lv_grad_conical_state_t *)dsc->state;  in lv_gradient_conical_get_line()  local
586     lv_grad_t * grad = state->cgrad;  in lv_gradient_conical_get_line()
589     int32_t dx = xp - state->x0;  in lv_gradient_conical_get_line()
590     int32_t dy = yp - state->y0;  in lv_gradient_conical_get_line()
598                 int32_t d = lv_atan2(dy, dx) - state->a;  in lv_gradient_conical_get_line()
601                 w = extend_w((d * state->inv_da) >> 8, dsc->extend);  in lv_gradient_conical_get_line()
610             int32_t d = lv_atan2(dy, dx) - state->a;  in lv_gradient_conical_get_line()
613             w = extend_w((d * state->inv_da) >> 8, dsc->extend);  in lv_gradient_conical_get_line()