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/************************************************************************************
AstroMenace (Hardcore 3D space shooter with spaceship upgrade possibilities)
Copyright © 2006-2013 Michael Kurinnoy, Viewizard
AstroMenace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
AstroMenace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AstroMenace. If not, see <http://www.gnu.org/licenses/>.
Web Site: http://www.viewizard.com/
Project: http://sourceforge.net/projects/openastromenace/
E-mail: viewizard@viewizard.com
*************************************************************************************/
#include "RendererInterface.h"
//------------------------------------------------------------------------------------
// Переход на 2D режима вывода
//------------------------------------------------------------------------------------
void vw_Start2DMode(float nZ1, float nZ2)
{
// запоминаем состояние флагов
glPushAttrib(GL_ENABLE_BIT);
// и выключаем "ненужные"
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
// берем размер вьюпорта
int X, Y, W, H;
vw_GetViewport(&X, &Y, &W, &H);
// переводим его в флоат для расчетов (нужно чтобы результаты были флоат)
float AWw = W*1.0f;
float AHw = H*1.0f;
glMatrixMode(GL_PROJECTION); //select the projection matrix
glPushMatrix(); //store the projection matrix
glLoadIdentity(); //reset the projection matrix
// смотрим, была ли установка на фиксированный внутренний размер
float AW;
float AH;
bool ASpresent=false;
ASpresent = vw_GetAspectWH(&AW, &AH);
if (ASpresent)
glOrtho(X*(AW/AWw), (X+W)*(AW/AWw), Y*(AH/AHw), (Y+H)*(AH/AHw), nZ1, nZ2);
else
glOrtho(0, AWw, 0, AHw, nZ1, nZ2); //set up an ortho screen
glMatrixMode(GL_MODELVIEW); //select the modelview matrix
glPushMatrix();
glLoadIdentity();
}
//------------------------------------------------------------------------------------
// Возвращение в обычный (3D) режим вывода
//------------------------------------------------------------------------------------
void vw_End2DMode()
{
glMatrixMode(GL_MODELVIEW); //select the modelview matrix
glPopMatrix();
glMatrixMode(GL_PROJECTION); //select the projection matrix
glPopMatrix(); //restore the old projection matrix
glMatrixMode(GL_MODELVIEW); //select the modelview matrix
// восстанавливаем флаги
glPopAttrib();
}
//------------------------------------------------------------------------------------
// Прорисовка в 2д
//------------------------------------------------------------------------------------
void vw_Draw(int X, int Y, RECT *SrcRect, eTexture *Tex, bool Alpha, float RotateAngle, int DrawCorner)
{
if (Tex == 0) return;
float AW;
float AH;
bool ASpresent=false;
ASpresent = vw_GetAspectWH(&AW, &AH);
int W, H;
vw_GetViewport(0, 0, &W, &H);
float AHw = H*1.0f;
// Установка текстуры и ее свойств...
vw_SetTexture(0, Tex);
vw_SetTextureBlend(Alpha, RI_BLEND_SRCALPHA, RI_BLEND_INVSRCALPHA);
// Вычисление поправки по У в зависимости от DrawCorner
// - расположения угла начала координат
float tmpPosY = 0;
// изменяем только в случае RI_UL_CORNER
if (DrawCorner == RI_UL_CORNER)
{
if (ASpresent) tmpPosY = (AH - Y - Y - (SrcRect->bottom - SrcRect->top));
else tmpPosY = (AHw - Y - Y - (SrcRect->bottom - SrcRect->top));
}
float ImageHeight = Tex->Height*1.0f;
float ImageWidth = Tex->Width*1.0f;
float FrameHeight = (SrcRect->bottom*1.0f)/ImageHeight;
float FrameWidth = (SrcRect->right*1.0f)/ImageWidth;
float Yst = (SrcRect->top)/ImageHeight;
float Xst = (SrcRect->left)/ImageWidth;
// буфер для последовательности RI_TRIANGLE_STRIP
// войдет RI_2f_XYZ | RI_2f_TEX
float *tmp = 0;
tmp = new float[(2+2)*4]; if (tmp == 0) return;
int k=0;
tmp[k++] = X;
tmp[k++] = Y +tmpPosY + (SrcRect->bottom - SrcRect->top);
tmp[k++] = Xst;
tmp[k++] = 1.0f-Yst;
tmp[k++] = X;
tmp[k++] = Y +tmpPosY;
tmp[k++] = Xst;
tmp[k++] = 1.0f-FrameHeight;
tmp[k++] = X + (SrcRect->right - SrcRect->left);
tmp[k++] = Y +tmpPosY + (SrcRect->bottom - SrcRect->top);
tmp[k++] = FrameWidth;
tmp[k++] = 1.0f-Yst;
tmp[k++] = X + (SrcRect->right - SrcRect->left);
tmp[k++] = Y +tmpPosY;
tmp[k++] = FrameWidth;
tmp[k++] = 1.0f-FrameHeight;
glPushMatrix();
glRotatef(RotateAngle, 0, 0, 1);
vw_SendVertices(RI_TRIANGLE_STRIP, 4, RI_2f_XY | RI_1_TEX, tmp, 4*sizeof(float));
glPopMatrix();
if (tmp != 0){delete [] tmp; tmp = 0;}
vw_SetTextureBlend(false, 0, 0);
vw_BindTexture(0, 0);
}
//------------------------------------------------------------------------------------
// Прорисовка в 2д с прозрачностью
//------------------------------------------------------------------------------------
void vw_DrawTransparent(RECT *DstRect, RECT *SrcRect, eTexture *Tex, bool Alpha, float Transp, float RotateAngle, int DrawCorner, float R, float G, float B)
{
if (Tex == 0) return;
if (Transp <= 0.0f) return;
if (Transp > 1.0f) Transp = 1.0f;
float AW;
float AH;
bool ASpresent=false;
ASpresent = vw_GetAspectWH(&AW, &AH);
int W, H;
vw_GetViewport(0, 0, &W, &H);
float AHw = H*1.0f;
int X = DstRect->left;
int Y = DstRect->top;
// Установка текстуры и ее свойств...
vw_SetTexture(0, Tex);
vw_SetTextureBlend(Alpha, RI_BLEND_SRCALPHA, RI_BLEND_INVSRCALPHA);
// Вычисление поправки по У в зависимости от DrawCorner
// - расположения угла начала координат
float tmpPosY = 0;
// изменяем только в случае RI_UL_CORNER
if (DrawCorner == RI_UL_CORNER)
{
if (ASpresent) tmpPosY = (AH - Y - Y - (DstRect->bottom - DstRect->top));
else tmpPosY = (AHw - Y - Y - (DstRect->bottom - DstRect->top));
}
float ImageHeight = Tex->Height*1.0f;
float ImageWidth = Tex->Width*1.0f;
float FrameHeight = (SrcRect->bottom*1.0f )/ImageHeight;
float FrameWidth = (SrcRect->right*1.0f )/ImageWidth;
float Yst = (SrcRect->top*1.0f)/ImageHeight;
float Xst = (SrcRect->left*1.0f)/ImageWidth;
vw_SetColor(R, G, B, Transp);
// буфер для последовательности RI_TRIANGLE_STRIP
// войдет RI_2f_XYZ | RI_2f_TEX
float *tmp = 0;
tmp = new float[(2+2)*4]; if (tmp == 0) return;
int k=0;
tmp[k++] = X;
tmp[k++] = Y +tmpPosY + (DstRect->bottom - DstRect->top);
tmp[k++] = Xst;
tmp[k++] = 1.0f-Yst;
tmp[k++] = X;
tmp[k++] = Y +tmpPosY;
tmp[k++] = Xst;
tmp[k++] = 1.0f-FrameHeight;
tmp[k++] = X + (DstRect->right - DstRect->left);
tmp[k++] = Y +tmpPosY + (DstRect->bottom - DstRect->top);
tmp[k++] = FrameWidth;
tmp[k++] = 1.0f-Yst;
tmp[k++] = X + (DstRect->right - DstRect->left);
tmp[k++] = Y +tmpPosY;
tmp[k++] = FrameWidth;
tmp[k++] = 1.0f-FrameHeight;
glPushMatrix();
glRotatef(RotateAngle, 0, 0, 1);
vw_SendVertices(RI_TRIANGLE_STRIP, 4, RI_2f_XY | RI_1_TEX, tmp, 4*sizeof(float));
glPopMatrix();
if (tmp != 0){delete [] tmp; tmp = 0;}
vw_SetTextureBlend(false, 0, 0);
vw_SetColor(1.0f, 1.0f, 1.0f, 1.0f);
vw_BindTexture(0, 0);
}
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