160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
/*
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Copyright (C) 2015-2016 Parallel Realities
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "draw.h"
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void prepareScene(void)
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{
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SDL_SetRenderTarget(app.renderer, app.backBuffer);
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SDL_SetRenderDrawColor(app.renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
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SDL_RenderClear(app.renderer);
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}
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void presentScene(void)
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{
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if (dev.debug)
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{
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drawText(5, SCREEN_HEIGHT - 25, 14, TA_LEFT, colors.white, "DEBUG MODE");
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if (dev.showFPS)
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{
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drawText(SCREEN_WIDTH / 2, SCREEN_HEIGHT - 25, 14, TA_CENTER, colors.white, "FPS: %d", dev.fps);
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}
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}
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drawMouse();
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SDL_SetRenderTarget(app.renderer, NULL);
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SDL_RenderCopy(app.renderer, app.backBuffer, NULL, NULL);
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SDL_RenderPresent(app.renderer);
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}
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void blit(SDL_Texture *texture, int x, int y, int center)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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SDL_QueryTexture(texture, NULL, NULL, &dstRect.w, &dstRect.h);
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if (center)
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{
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dstRect.x -= (dstRect.w / 2);
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dstRect.y -= (dstRect.h / 2);
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}
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SDL_RenderCopy(app.renderer, texture, NULL, &dstRect);
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}
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void blitScaled(SDL_Texture *texture, int x, int y, int w, int h)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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dstRect.w = w;
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dstRect.h = h;
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SDL_RenderCopy(app.renderer, texture, NULL, &dstRect);
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}
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void blitRotated(SDL_Texture *texture, int x, int y, float angle)
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{
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SDL_Rect dstRect;
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dstRect.x = x;
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dstRect.y = y;
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SDL_QueryTexture(texture, NULL, NULL, &dstRect.w, &dstRect.h);
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dstRect.x -= (dstRect.w / 2);
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dstRect.y -= (dstRect.h / 2);
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SDL_RenderCopyEx(app.renderer, texture, NULL, &dstRect, angle, NULL, SDL_FLIP_NONE);
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}
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void drawCircle(int cx, int cy, int radius, int r, int g, int b, int a)
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{
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int x = radius;
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int y = 0;
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int radiusError = 1 - x;
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SDL_SetRenderDrawColor(app.renderer, r, g, b, a);
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SDL_SetRenderDrawBlendMode(app.renderer, SDL_BLENDMODE_BLEND);
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while (x >= y)
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{
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SDL_RenderDrawPoint(app.renderer, x + cx, y + cy);
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SDL_RenderDrawPoint(app.renderer, y + cx, x + cy);
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SDL_RenderDrawPoint(app.renderer,-x + cx, y + cy);
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SDL_RenderDrawPoint(app.renderer,-y + cx, x + cy);
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SDL_RenderDrawPoint(app.renderer,-x + cx, -y + cy);
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SDL_RenderDrawPoint(app.renderer,-y + cx, -x + cy);
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SDL_RenderDrawPoint(app.renderer, x + cx, -y + cy);
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SDL_RenderDrawPoint(app.renderer, y + cx, -x + cy);
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y++;
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if (radiusError < 0)
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{
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radiusError += 2 * y + 1;
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}
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else
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{
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x--;
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radiusError += 2 * (y - x) + 1;
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}
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}
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SDL_SetRenderDrawBlendMode(app.renderer, SDL_BLENDMODE_NONE);
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}
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void drawFilledCircle(int cx, int cy, int radius, int r, int g, int b, int a)
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{
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int x, y;
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SDL_SetRenderDrawColor(app.renderer, r, g, b, a);
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SDL_SetRenderDrawBlendMode(app.renderer, SDL_BLENDMODE_BLEND);
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for (y = -radius ; y <= radius ; y++)
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{
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for (x =- radius; x <= radius ; x++)
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{
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if (x * x + y * y <= radius * radius)
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{
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SDL_RenderDrawPoint(app.renderer, cx + x, cy + y);
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}
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}
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}
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SDL_SetRenderDrawBlendMode(app.renderer, SDL_BLENDMODE_NONE);
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}
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void saveScreenshot(void)
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{
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static int i = 0;
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char filename[MAX_NAME_LENGTH];
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SDL_Surface *sshot;
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sprintf(filename, "dev/screenshots/tmp/%d.bmp", ++i);
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sshot = SDL_CreateRGBSurface(0, SCREEN_WIDTH, SCREEN_HEIGHT, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000);
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SDL_RenderReadPixels(app.renderer, NULL, SDL_PIXELFORMAT_ARGB8888, sshot->pixels, sshot->pitch);
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SDL_SaveBMP(sshot, filename);
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SDL_FreeSurface(sshot);
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}
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