356 lines
8.9 KiB
C++
356 lines
8.9 KiB
C++
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#include "Common.hpp"
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#ifdef USE_GLES1
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#include <GLES/gl.h>
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#else
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#ifdef __APPLE__
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#include <OpenGL/gl.h>
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#include <OpenGL/glu.h>
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#else
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#include <GL/gl.h>
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#include <GL/glu.h>
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#endif
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#endif
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#include "Renderable.hpp"
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#include <math.h>
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typedef float floatPair[2];
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typedef float floatTriple[3];
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typedef float floatQuad[4];
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RenderContext::RenderContext()
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: time(0),texsize(512), aspectRatio(1), aspectCorrect(false){};
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RenderItem::RenderItem():masterAlpha(1){}
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DarkenCenter::DarkenCenter():RenderItem(){}
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MotionVectors::MotionVectors():RenderItem(){}
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Border::Border():RenderItem(){}
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void DarkenCenter::Draw(RenderContext &context)
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{
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//float unit=0.05f;
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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float colors[6][4] = {{0, 0, 0, (3.0f/32.0f) * masterAlpha},
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{0, 0, 0, 0},
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{0, 0, 0, 0},
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{0, 0, 0, 0},
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{0, 0, 0, 0},
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{0, 0, 0, 0}};
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float points[6][2] = {{ 0.5, 0.5},
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{ 0.45, 0.5},
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{ 0.5, 0.45},
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{ 0.55, 0.5},
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{ 0.5, 0.55},
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{ 0.45, 0.5}};
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_COLOR_ARRAY);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glVertexPointer(2,GL_FLOAT,0,points);
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glColorPointer(4,GL_FLOAT,0,colors);
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glDrawArrays(GL_TRIANGLE_FAN,0,6);
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}
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Shape::Shape():RenderItem()
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{
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std::string imageUrl = "";
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sides = 4;
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thickOutline = false;
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enabled = true;
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additive = false;
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textured = false;
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tex_zoom = 1.0;
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tex_ang = 0.0;
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x = 0.5;
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y = 0.5;
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radius = 1.0;
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ang = 0.0;
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r = 0.0; /* red color value */
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g = 0.0; /* green color value */
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b = 0.0; /* blue color value */
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a = 0.0; /* alpha color value */
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r2 = 0.0; /* red color value */
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g2 = 0.0; /* green color value */
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b2 = 0.0; /* blue color value */
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a2 = 0.0; /* alpha color value */
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border_r = 0.0; /* red color value */
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border_g = 0.0; /* green color value */
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border_b = 0.0; /* blue color value */
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border_a = 0.0; /* alpha color value */
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}
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void Shape::Draw(RenderContext &context)
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{
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float xval, yval;
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float t;
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// printf("drawing shape %f\n", ang);
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float temp_radius= radius*(.707*.707*.707*1.04);
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//Additive Drawing or Overwrite
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if ( additive==0) glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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else glBlendFunc(GL_SRC_ALPHA, GL_ONE);
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xval= x;
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yval= -(y-1);
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if ( textured)
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{
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if (imageUrl !="")
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{
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GLuint tex= context.textureManager->getTexture(imageUrl);
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if (tex != 0)
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{
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glBindTexture(GL_TEXTURE_2D, tex);
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context.aspectRatio=1.0;
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}
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}
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glMatrixMode(GL_TEXTURE);
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glPushMatrix();
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glLoadIdentity();
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glEnable(GL_TEXTURE_2D);
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_COLOR_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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floatQuad *colors = new float[sides+2][4];
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floatPair *tex = new float[sides+2][2];
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floatPair *points = new float[sides+2][2];
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//Define the center point of the shape
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colors[0][0] = r;
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colors[0][1] = g;
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colors[0][2] = b;
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colors[0][3] = a * masterAlpha;
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tex[0][0] = 0.5;
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tex[0][1] = 0.5;
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points[0][0] = xval;
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points[0][1] = yval;
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for ( int i=1;i< sides+2;i++)
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{
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colors[i][0]= r2;
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colors[i][1]=g2;
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colors[i][2]=b2;
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colors[i][3]=a2 * masterAlpha;
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t = (i-1)/(float) sides;
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tex[i][0] =0.5f + 0.5f*cosf(t*3.1415927f*2 + tex_ang + 3.1415927f*0.25f)*(context.aspectCorrect ? context.aspectRatio : 1.0)/ tex_zoom;
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tex[i][1] = 0.5f + 0.5f*sinf(t*3.1415927f*2 + tex_ang + 3.1415927f*0.25f)/ tex_zoom;
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points[i][0]=temp_radius*cosf(t*3.1415927f*2 + ang + 3.1415927f*0.25f)*(context.aspectCorrect ? context.aspectRatio : 1.0)+xval;
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points[i][1]=temp_radius*sinf(t*3.1415927f*2 + ang + 3.1415927f*0.25f)+yval;
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}
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glVertexPointer(2,GL_FLOAT,0,points);
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glColorPointer(4,GL_FLOAT,0,colors);
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glTexCoordPointer(2,GL_FLOAT,0,tex);
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glDrawArrays(GL_TRIANGLE_FAN,0,sides+2);
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glDisable(GL_TEXTURE_2D);
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glPopMatrix();
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glMatrixMode(GL_MODELVIEW);
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//Reset Texture state since we might have changed it
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/*
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if(this->renderTarget->useFBO)
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{
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glBindTexture( GL_TEXTURE_2D, renderTarget->textureID[1] );
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}
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else
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{
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glBindTexture( GL_TEXTURE_2D, renderTarget->textureID[0] );
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}
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*/
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delete[] colors;
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delete[] tex;
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delete[] points;
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}
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else
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{//Untextured (use color values)
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_COLOR_ARRAY);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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floatQuad *colors = new float[sides+2][4];
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floatPair *points = new float[sides+2][2];
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//Define the center point of the shape
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colors[0][0]=r;
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colors[0][1]=g;
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colors[0][2]=b;
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colors[0][3]=a * masterAlpha;
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points[0][0]=xval;
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points[0][1]=yval;
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for ( int i=1;i< sides+2;i++)
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{
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colors[i][0]=r2;
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colors[i][1]=g2;
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colors[i][2]=b2;
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colors[i][3]=a2 * masterAlpha;
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t = (i-1)/(float) sides;
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points[i][0]=temp_radius*cosf(t*3.1415927f*2 + ang + 3.1415927f*0.25f)*(context.aspectCorrect ? context.aspectRatio : 1.0)+xval;
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points[i][1]=temp_radius*sinf(t*3.1415927f*2 + ang + 3.1415927f*0.25f)+yval;
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}
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glVertexPointer(2,GL_FLOAT,0,points);
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glColorPointer(4,GL_FLOAT,0,colors);
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glDrawArrays(GL_TRIANGLE_FAN,0,sides+2);
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//draw first n-1 triangular pieces
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delete[] colors;
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delete[] points;
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}
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if (thickOutline==1) glLineWidth(context.texsize < 512 ? 1 : 2*context.texsize/512);
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glEnableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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floatPair *points = new float[sides+1][2];
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glColor4f( border_r, border_g, border_b, border_a * masterAlpha);
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for ( int i=0;i< sides;i++)
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{
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t = (i-1)/(float) sides;
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points[i][0]= temp_radius*cosf(t*3.1415927f*2 + ang + 3.1415927f*0.25f)*(context.aspectCorrect ? context.aspectRatio : 1.0)+xval;
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points[i][1]= temp_radius*sinf(t*3.1415927f*2 + ang + 3.1415927f*0.25f)+yval;
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}
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glVertexPointer(2,GL_FLOAT,0,points);
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glDrawArrays(GL_LINE_LOOP,0,sides);
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if (thickOutline==1) glLineWidth(context.texsize < 512 ? 1 : context.texsize/512);
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delete[] points;
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}
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void MotionVectors::Draw(RenderContext &context)
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{
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glEnableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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float intervalx=1.0/x_num;
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float intervaly=1.0/y_num;
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glPointSize(length);
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glColor4f(r, g, b, a * masterAlpha);
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if (x_num + y_num < 600)
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{
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int size = x_num * y_num ;
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floatPair *points = new float[size][2];
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for (int x=0;x<(int)x_num;x++)
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{
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for(int y=0;y<(int)y_num;y++)
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{
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float lx, ly, lz;
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lx = x_offset+x*intervalx;
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ly = y_offset+y*intervaly;
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points[(x * (int)y_num) + y][0] = lx;
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points[(x * (int)y_num) + y][1] = ly;
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}
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}
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glVertexPointer(2,GL_FLOAT,0,points);
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glDrawArrays(GL_POINTS,0,size);
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delete[] points;
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}
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}
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void Border::Draw(RenderContext &context)
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{
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glEnableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_COLOR_ARRAY);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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//Draw Borders
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float of=outer_size*.5;
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float iff=inner_size*.5;
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float texof=1.0-of;
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//no additive drawing for borders
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glColor4f(outer_r, outer_g, outer_b, outer_a * masterAlpha);
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float pointsA[4][2] = {{0,0},{0,1},{of,0},{of,1}};
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glVertexPointer(2,GL_FLOAT,0,pointsA);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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float pointsB[4][2] = {{of,0},{of,of},{texof,0},{texof,of}};
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glVertexPointer(2,GL_FLOAT,0,pointsB);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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float pointsC[4][2] = {{texof,0},{texof,1},{1,0},{1,1}};
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glVertexPointer(2,GL_FLOAT,0,pointsC);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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float pointsD[4][2] = {{of,1},{of,texof},{texof,1},{texof,texof}};
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glVertexPointer(2,GL_FLOAT,0,pointsD);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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glColor4f(inner_r, inner_g, inner_b, inner_a * masterAlpha);
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glRectd(of, of, of+iff, texof);
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glRectd(of+iff, of, texof-iff, of+iff);
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glRectd(texof-iff, of, texof, texof);
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glRectd(of+iff, texof, texof-iff, texof-iff);
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float pointsE[4][2] = {{of,of},{of,texof},{of+iff,of},{of+iff,texof}};
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glVertexPointer(2,GL_FLOAT,0,pointsE);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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float pointsF[4][2] = {{of+iff,of},{of+iff,of+iff},{texof-iff,of},{texof-iff,of+iff}};
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glVertexPointer(2,GL_FLOAT,0,pointsF);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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float pointsG[4][2] = {{texof-iff,of},{texof-iff,texof},{texof,of},{texof,texof}};
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glVertexPointer(2,GL_FLOAT,0,pointsG);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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float pointsH[4][2] = {{of+iff,texof},{of+iff,texof-iff},{texof-iff,texof},{texof-iff,texof-iff}};
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glVertexPointer(2,GL_FLOAT,0,pointsH);
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glDrawArrays(GL_TRIANGLE_STRIP,0,4);
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}
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