/* * chicken-sdl2: CHICKEN Scheme bindings to Simple DirectMedia Layer 2 * * Copyright © 2013–2021 John Croisant. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ void chickenSDL2_PointScale_i(SDL_Point* p, Sint32 scale, SDL_Point* dest) { dest->x = chickenSDL2_Mul_ii(p->x, scale); dest->y = chickenSDL2_Mul_ii(p->y, scale); } void chickenSDL2_PointScale_d(SDL_Point* p, double scale, SDL_Point* dest) { dest->x = chickenSDL2_Mul_id(p->x, scale); dest->y = chickenSDL2_Mul_id(p->y, scale); } void chickenSDL2_PointUnscale_i(SDL_Point* p, Sint32 scale, SDL_Point* dest) { dest->x = chickenSDL2_Div_ii(p->x, scale); dest->y = chickenSDL2_Div_ii(p->y, scale); } void chickenSDL2_PointUnscale_d(SDL_Point* p, double scale, SDL_Point* dest) { dest->x = chickenSDL2_Div_id(p->x, scale); dest->y = chickenSDL2_Div_id(p->y, scale); } void chickenSDL2_PointMove(SDL_Point* p, Sint32 dx, Sint32 dy, SDL_Point* dest) { dest->x = chickenSDL2_Add_ii(p->x, dx); dest->y = chickenSDL2_Add_ii(p->y, dy); } void chickenSDL2_PointAdd(SDL_Point* p1, SDL_Point* p2, SDL_Point* dest) { dest->x = chickenSDL2_Add_ii(p1->x, p2->x); dest->y = chickenSDL2_Add_ii(p1->y, p2->y); } void chickenSDL2_PointSub(SDL_Point* p1, SDL_Point* p2, SDL_Point* dest) { dest->x = chickenSDL2_Sub_ii(p1->x, p2->x); dest->y = chickenSDL2_Sub_ii(p1->y, p2->y); } void chickenSDL2_PointLerp(SDL_Point* p1, SDL_Point* p2, double t, SDL_Point* dest) { dest->x = chickenSDL2_Lerp_iid(p1->x, p2->x, t); dest->y = chickenSDL2_Lerp_iid(p1->y, p2->y, t); }